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Air-insulated, metal-enclosed circuit-breaker panel
Type EA...-LS/-LSG with withdrawable technique for rated voltages of up to 24 kV
12264542-03 10.2012 EN
OP
ER
AT
ING
IN
ST
RU
CT
ION
S
12264542-03 10.2012 EN
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12264542-03 10.2012 EN
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Table of contents
1 General ...................................................................... 8
1.1 Liability and warranty .................................... 81.2 Service information ....................................... 8
2 Safety regulations .................................................... 9
2.1 Intended use ................................................. 92.2 Explanation of symbols and notes ................ 9
2.3 General health and safety instructions ....... 10
2.3.1 Operation .................................................... 102.3.2 Safety features ........................................... 10
2.3.3 Auxiliary device for operation,
maintenance and repair .............................. 102.3.4 Statutory health and safety regulations ...... 10
3 Transport and installation ..................................... 11
3.1 Safety notes for transport ........................... 113.2 Transport and unloading ............................. 11
3.3 Arrival and unpacking of goods .................. 12
3.4 Storage ....................................................... 133.5 Planning of installation ................................ 14
3.5.1 Space required ........................................... 14
3.5.2 Dimensions ................................................. 163.5.3 Base fixing dimensions ............................... 17
3.6 Removing the lifting eyes ........................... 18
3.7 Fitting the bus bars ..................................... 183.8 Assembly of the pressure relief device ....... 19
3.8.1 Assembly of the arc-fault deflecting shield
with pressure relief flap (standard) ............. 193.8.2 Assembly of the arc-fault absorber
(optional) ..................................................... 20
3.9 Laying the incomer for the auxiliary and control circuits ...................................... 21
3.10 Connecting the station earth ....................... 22
3.11 Fitting the sectionaliser bars (panels type EA…LSG-…) ......................... 22
3.12 Connection of the power cable
(panels type EA…LS-…) ............................ 233.13 Attachments ................................................ 25
4 Technical description ............................................ 26
4.1 EA circuit-breaker panel ............................. 264.2 Enclosure .................................................... 26
4.3 Termination of the panel at the top ............. 27
4.4 Current transformers and voltage transformers ............................................... 28
4.5 Busbars / Sectionaliser busbars ................. 28
4.6 Cable fixing iron .......................................... 284.7 Vacuum circuit-breaker type NVL2E
with compact drawer unit KE ...................... 29
4.8 Earthing switch ........................................... 304.9 Switch panel interlocks ............................... 31
4.10 Low voltage compartment .......................... 32
4.10.1 General ....................................................... 324.10.2 Control and display unit .............................. 32
4.11 Insulating plate ........................................... 33
4.12 Locking features for panel door and drives (optional) ................................... 34
4.13 Bottom plate (optional) ............................... 35
4.14 Capacitive voltage indicating system
(optional) .................................................... 364.14.1 Integrated voltage indicating system
(System CPI, Company Kuvag) ................. 36
4.14.2 Integrated voltage detecting system (System WEGA, Company Horstmann) ..... 37
4.14.3 Integrated voltage indicating system
(System CAPDIS, Company Kries) ............ 38
5 Operation ................................................................ 39
5.1 Switching types .......................................... 39
5.2 Switching accessories ................................ 395.3 State of the switch panel as delivered ........ 39
5.4 Opening and closing the switch panel
door ............................................................ 405.5 Earthing the switch panel ........................... 41
5.5.1 Actuating the earthing switch ..................... 41
5.5.2 Earthing with earthing and short-circuiting device ................................ 42
5.6 Moving the circuit-breaker .......................... 43
5.6.1 Moving the circuit-breaker from the disconnected position to the
connected position ..................................... 43
5.6.2 Moving the circuit-breaker from the connected position to the disconnected position ......... 45
5.7 Switching the circuit-breaker panel ............ 46
5.7.1 Tensioning the spring accumulator by hand ...................................................... 46
5.7.2 Tensioning the spring accumulator
with optional motor drive ............................ 465.7.3 Switching on the circuit-breaker ................. 47
5.7.4 Switching off the circuit-breaker ................. 48
6 Commissioning ...................................................... 49
6.1 Inspection activities and safety
instructions ................................................. 49
6.2 Checking for electrical isolation .................. 496.3 Phase comparison ..................................... 49
6.4 Switching the EA switch panel (manual) .... 50
6.5 Switching using motor drive (optional) ....... 50
7 Maintenance ........................................................... 51
7.1 General ...................................................... 51
7.2 Inspection and maintenance ...................... 517.2.1 Inspection ................................................... 51
7.2.2 Maintenance ............................................... 51
7.3 Cleaning ..................................................... 527.4 Return of switch panels .............................. 52
8 Technical data ........................................................ 53
8.1 Technical data on the circuit-breaker panels ......................................................... 53
8.2 Tightening torques ..................................... 54
8.3 Materials ..................................................... 548.4 Regulations and standards ........................ 54
9 Accessories ............................................................ 55
12264542-03 10.2012 EN
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Fig. 1 Circuit-breaker panel EA…LS (shown without pressure relief device)
12264543 00 02
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
13
16
17
18
12264542-03 10.2012 EN
5
1 Lifting eyes
2 Cover configuration
(to suit customer requirements)
3 Capacitive voltage indicator
(optional)
4 Low voltage compartment cover
5 Actuating lever for the pressure-proof torsion rod closure
6 Rating plate
7 Switch panel door
8 Inspection window in the switch
panel door
9 Opening for the circuit-breaker's
manual winding up
10 Slider for releasing the opening
for the circuit-breaker's manual
winding up
11 Unlocking lever for the opening for
the circuit-breaker drawer unit travel spindle
12 Circuit-breaker drawer unit travel spindle opening
13 Switch panel door fastener
14 Shroud over earthing switch
device plug-in opening
15 Mechanical circuit-breaker OFF
("0") push-button
16 Mechanical circuit-breaker ON
("I") push-button
17 Inspection window for checking
the insulating plate
18 Low voltage compartment
fastener
12264542-03 10.2012 EN
6
Fig. 2 Circuit-breaker panel EA20LS (shown with arc-deflecting shield and bottom plate)
12264543 00 03
1
2
3
4
678910111213141516
26
25
24
23
22
21
20
19
18
17
5
27
12264542-03 10.2012 EN
7
1 Arc-deflecting shield
2 Low voltage compartment cover
3 Circuit-breaker low voltage connector
4 Shelf for low voltage connector
5 Circuit-breaker
6 Switch panel door
7 Circuit-breaker drawer unit
8 Cable duct (left and right)
9 Cable duct shroud in the plinth
(left and right)
10 Bottom plates (optional)
11 Cable fixing iron
12 Cable clamp (available as an
option)
13 Power cable (not included in the
items supplied)
14 Cable termination (not included in
the items supplied)
15 Earthing switch
16 Earthing terminal switch panel
earthing
17 Bottom contacts, circuit-breaker
18 Bottom corresponding contacts, switch panel
19 Current transformer
20 Insulating plate guide
21 Top contacts, circuit-breaker
22 Top corresponding contacts, switch panel
23 Busbar bushing
24 Bus bars
25 Low voltage compartment
26 Pressure relief flap
27 Pressure relief flap arrester (only
on end panels on the exterior of the switchgear)
12264542-03 10.2012 EN
8
1 General
1.1 Liability and warranty
All data and information on the operation
and maintenance of the switch panel are
provided based on our past experience and to the best of our knowledge. These
instructions describe the standard switch
panel.
The technical information and data in
these operating instructions reflect the situation at the time of going to print. We
reserve the right to make technical
changes in the course of further development without the need to change
these instructions.
Therefore, no claims can be made based on the information and descriptions in
these instructions.
We will not assume liability for damage
or malfunctions resulting from operating errors, failure to observe these operating
instructions or incorrect repairs.
Genuine spare parts are specially
designed and tested for the switch panel.
It is recommended to only use spare
parts and accessories supply by us. We
would like to make explicitly clear that any spare parts and accessories not
supplied by us require our approval.
The installation and use of products from
other manufacturers may have a
negative effect on specific design characteristics of the switch panel and
degrade personal safety or place the
switch panel or other property at risk.
Any liability is excluded for damage
resulting from the use of spare parts and accessories not approved by us.
Any unauthorised modification or changes to the switch panel are
prohibited for safety reasons and will
result in the exclusion of any liability on the part of the manufacturer for any
resulting damage.
1.2 Service information
The customer service of Ormazabal
Anlagentechnik GmbH is available to
provide technical information on Ormazabal products.
12264542-03 10.2012 EN
9
2 Safety regulations
2.1 Intended use
Switch panels of type EA are
prefabricated, type-tested, metal-clad,
combination indoor switch panels for accessible switchgear rooms. They can
be used for a rated normal current up
630 A and a rated operational voltage up to 24 kV.
EA switch panels are used in:
� Distribution substations in utility
and industrial networks
� Customer substations with utility-
side metering set
� Industrial substations with MV
measurement for measuring the load from the individual
businesses.
Using EA switch panels:
� Transformers
� Sections of cable
are switched.
The switch panel is only allowed to be
serviced and repaired by authorised personnel, who have been instructed or
trained accordingly.
These operating instructions as well as
the operating instructions provided for
the compact drawer unit and the vacuum circuit-breaker are to be read prior to
installation and prior to commissioning
the switch panel, and are to be followed exactly.
Every person involved in the installation, commissioning, operation, maintenance
and repair of the unit must have read and
understood these sets of operating instructions, especially the related
chapter on safety and any other safety
instructions.We recommend that the user/owner
obtains written confirmation of
compliance with this requirement.
Only with knowledge of these (sets of)
operating instructions can mistakes in operation be avoided and trouble-free
operation guaranteed.
The general safety and accident
prevention regulations issued by the
authorities and any regulations from the insurer, which may vary from country to
country, must be strictly observed when
operating and servicing the switch panel.
These operating instructions are part of
the switch panel or switchgear. When passing on the switch panel (relocation,
selling or similar) the operating
instructions must also be handed over.
Also observe the operating instructions
and the manufacturer‘s information for used components of secondary
technology.
2.2 Explanation of symbols and
notes
Observe these instructions and exercise
extreme care in such cases. Hand out all instructions on health and safety also to
all personnel who are involved in work
on the switch panel. Besides the instructions in these operating
instructions, you must also comply with
the generally applicable health and safety regulations (e. g. DIN EN 50110,
VDE 0105, BGV A3).
Health and safety symbols
You will find these symbols with all health and safety instructions
in these operating instructions in
which reference is made to hazards for personnel.
Warning about risk of electric
voltage
This special health and safety symbol warns against dangers
due the risk of electric voltage.
Cautionary instruction
In these operating instructions
this instruction appears at all points where particular care is
required to comply with
directives, standards, instructions and the correct work
sequence, and to avoid damage
to the switch panel.
Attention!
12264542-03 10.2012 EN
10
2.3 General health and safety
instructions
The switch panel is designed and
manufactured to the latest technical standards and with due consideration of
all safety instructions.
However, hazards for personnel and
property may arise from the switch panel
if it is used incorrectly by untrained personnel or for purposes for which it is
not intended, if it is tampered with or if
the safety regulations are disregarded. For this reason every person involved in
the installation, commissioning,
operation or maintenance of the switch panel must have read and understood
these instructions.
2.3.1 Operation
When operating the switch panel the
responsibilities must be clearly defined
and observed, so that no unclear areas of responsibility in relation to safety
arise.
Before commissioning the switch panel
and after maintenance work or
modifications, it must be inspected by suitably qualified personnel to ensure it
is in safe and correct working order.
Before commissioning, all personnel in
the danger zone around the switch panel
must be warned and asked to leave this area. There must not be any objects
blocking the access to the controls.
The user must operate the switch panel
only in correct working order.
During all work in the vicinity of
live parts (e. g. when earthing via
earthing fittings with the panel door open) the requirements of
VDE 0105, DIN EN 50110-1
article 6.4 are to be followed.
Any changes that degrade safety must
be reported immediately to the supervisor.
Changes to the switch panel are only permitted in agreement with the
manufacturer and under the supervision
of specialist personnel.
Specialist personnel are persons who,
due to their professional training and experience, have sufficient knowledge in
the field of electrical technology and are
familiar with the applicable health and safety regulations(BGV A3), directives
and the generally accepted technical
rules and regulations (e. g. VDE-regulations, IEC-standards, DIN-
standards).
2.3.2 Safety features
Safety features must not be altered,
dismantled or rendered ineffective.
Unprotected parts of the system can cause fatal injuries.
All safety features, e. g. shrouds, must always be fully functional and correctly in
place. Operation of switch panel with
faulty safety features is not permissible.
2.3.3 Auxiliary device for operation,
maintenance and repair
If any auxiliary device (tools or similar) is required for operation, maintenance or
repair of the switch panel, this equipment
must be in good condition and is to be used correctly.
Any unnecessary or hazardous use of auxiliary devices of any kind on the
switch panel is not permissible.
2.3.4 Statutory health and safety
regulations
Apart from these instructions on health
and safety and those attached to the switch panel, the locally applicable
health and safety regulations are to be
observed.
12264542-03 10.2012 EN
11
3 Transport and installation
3.1 Safety notes for transport
1. Lifting tackle must only be
used at points intended for this
purpose.
2. Ropes, chains or other lifting
tackle must be fitted with safety hooks.
3. Do not use any torn or worn ropes.
4. Ropes and chains must not be knotted.
5. Ropes and chains must not touch any sharp edges.
6. Use only ropes and chains of sufficient loading capacity.
(For weight of EA switch panel
see chapter "Technical data".)
7. Use only lifting gear of
sufficient loading capacity. (For weight of EA switch panel
see chapter "Technical data".)
8. Do not lift loads over persons.
3.2 Transport and unloading
The switch panel is delivered packed upright on a pallet. It is fastened to the
pallet with tightening straps (Fig. 3).
The circuit-breaker is delivered
separately from the switch panel.
For transportation or intermediate
storage, please always use the original
packaging and secure the switch panel with straps in the same way as for
delivery.
When attaching the tightening straps
make sure to attach these as shown in
Fig. 3, as otherwise the switch panel may be damaged.
During transport, comply with the
warning and safety instructions on the switch panel and its
packaging.
When unloading observe the
safety instructions (see chapter
3.1) and the applicable accident prevention regulations.
Unloading is only allowed to be performed by experienced
persons who are fully familiar
with the lifting gear.
Observe the permissible hoisting
weight of lifting tackle and lifting gear (forklift truck, crane).
Fig. 3
The circuit-breaker with compact
drawer unit must always be transported separately from the
switch panel!
For transport and intermediate storage the circuit-breaker must
be switched off (position indicator
on "O") and the closing spring relieved (spring accumulator
indicator on symbol
"discharged").Refer to the operating
instructions of the switching
device for further details.
If the packaging is no longer required for transport or
intermediate storage, it is to be
disposed of correctly.If required, the packaging can be
returned to the manufacturer free
of charge.
Front of switchgear
Corner protectors (cardboard)Tightening strap
Note!
12264542-03 10.2012 EN
12
3.3 Arrival and unpacking of
goods
– The goods must be checked
immediately upon receipt!
– Any complaints have to be stated on
the freight document and countersigned by the driver!
– In case of complaints please contact your sales partner:
www.ormazabal.com
Remove the tightening straps. The
switch panel is then no longer secured.
The switch panel may only be
attached using the lifting eyes
provided. The lifting eye screw connections must be checked for
tightness before lifting the unit
(see chapter 3.6, Fig. 13).
Due to its design, the centre of
gravity of the switch panel is higher than the middle of the
switch panel.
The switch panel may tilt if handled while is not secured!
Particular attention is to be paid to this issue when transporting
the switch panel to its place of
installation. It is not allowed to use levers to transport the switch
panel to its final position. This
action could cause damage to the enclosure.
To prevent damage, the EA switch panel is to be transported using a beam
(vertical attachment) (Fig. 4).
When using lifting tackle, use tackle with
2-ropes with a rope length of at least
850 mm (Fig. 5). At this rope length the rope is at a maximum angle of 60°.
Shorter rope lengths can cause damage
to the switch panel.
Fig. 4
Fig. 5
12264543 00 05
12264543 00 06
850
mm
12264542-03 10.2012 EN
13
Check the switch panel delivery for
correctness and completeness. The serial numbers on the delivery note and
on the rating plate on the switch panel
(Fig. 6) must match.
Key to type references, EA switch
panel
The principle used for the type identifiers
is explained in Fig. 7 based on the
example of the switch panel EA10 LS-19-75.
3.4 Storage
The switch panel is packed ready for
transport and storage in the factory.
It is only to be stored in dry, clean rooms and is to be protected against excessive
soiling. The environmental conditions
must comply with IEC 62271-1 / DIN EN 62271-1 (VDE 0671-1), ambient
temperature class "minus 5 indoor".
After intermediate storage, the switch panel is to be thoroughly cleaned prior to
installation (see chapter 7.3).
The related sections of the
operating instructions "Vacuum circuit-breaker Type NVL", article
no. 12256860 are also applicable
for the circuit-breaker type NVL2E used.
Fig. 6 Rating plate
(example)
Fig. 7
1 Type of unit
2 Order number
3 Year of manufacture
4 Serial number
5 Switch panel technical data
6 Standards applied
7 Document number for the
operating instructions (German/English)
Note!
12264543 00 51
Type
Year Ser. No.
Ur lr busbar
Order No.
AAkAkAs
lr
kt
Up outgoing
kl
pldU
rfT
Protection IPIAC AFL
IEC
IEC
Betriebsanleitung
Operating instructions
1
23
7
5
4
6
kVkVHz
kV
Type: EA
Rated voltage10 = 12 kV
20 = 24 kV
Panel type:
LS = circuit-breaker panelLSG = sectionaliser circuit-breaker panel
Panel height:
19 = 1900 mm
Panel width:75 = 750 mm
90 = 900 mm
E A 1 0 L S - 19 - 7 5
12264542-03 10.2012 EN
14
3.5 Planning of installation
3.5.1 Space required
Fig. 8 Installation flush at the front (dimensions in mm)
Table 1 (Dimensions in mm)
The dimensions given in Table 1
only apply for the panel type EA…LS/LSG. If these panels are
installed in a group with other
panel types, the dimensions may vary, see assembly instructions
"Panel installation for air-
insulated, metal-clad switchgear Type EA", article no.12262171.
Unpack switch panel prior to
transport to the switchgear room.
An appropriate door opening (X)
is to be provided for transporting the switch panel into the
switchgear room.
The environmental conditions at the installation location must
comply with IEC 62271-1 /
DIN EN 62271-1 (VDE 0671-1) as well as the information in
Chap. 8 „Technical data“.
The construction of the building
and the switchgear room must withstand the expected
mechanical loads and the
internal pressure caused by a short-circuit arc. Appropriate
calculations for these purposes
are recommended.
Switchgear related pressure
calculations can be enquired as part of services at the sales
department of Ormazabal GmbH.
12264543 00 08
32
100
10
0
B
TG
B B B
X
Panel type Panel width B Panel depth T Door opening Xb x h
Necessary corridor width G
EA10 LS/LSG-19-75 750 975 850 x 2300 1210
EA20 LS/LSG-19-90 900 1125 850 x 2300 1360
Note!
Note!
Note!
Attention!
Note!
12264542-03 10.2012 EN
15
The room height required for the
installation of the EA circuit-breaker panel is to be found in Fig. 9 as well as in
Table 2.
The switchgear EA is type-tested
for installation as per
IEC 62271-200 internal arc classification IAC AFL. If the
installation conditions at the
operating organisation are different to those listed and/or
additional assembly parts are
required, proceed as per 10.2 of the standard.
Fig. 9
Table 2
Attention!
1) Reduced room height only for EA10 on request (only in
conjunction with bottom plate)
Panel type Switchgear heightH1 / H2
Minimum room height H3
EA…LS/LSG-19-… with pressure relief flap
H1: 2100 mm 2700 mm
2400 mm1)
EA...LS/LSG-19-…
with arc-fault absorber
H2: 2235 mm 2700 mm
2350 mm1)
12264542-03 10.2012 EN
16
3.5.2 Dimensions
Fig. 10 shows the dimension of the
switch panel EA10 LS-19-75 (750 mm
panel width and EA20 LS-19-90 (900 mm panel width).
The external dimensions of the panels EA…LSG-… are identical to those of the
panels EA…LS-… for the same panel
width.
For the height of EA…LS/LSG
panels with arc-fault absorbers
see chapter 3.5.1.
Pay attention to necessary room
height (see chapter 3.5.1).
Fig. 10
Note!
Attention!
12264543 00 09
410
950
25
49
3
19
00
487
1100
25
42
0
19
00
450
210 210
750
375
900
230 230
20
02
00
21
00
21
00
1743
1892
Panel width 750 mm
Panel width 900 mm
(All dimensions are nominal dimensions [mm])
12264542-03 10.2012 EN
17
3.5.3 Floor fastening measurements
To install the switch panel, follow the
installation plan shown in Fig. 11. Use all
fastening holes shown (dimension 28x14 mm) to ensure the switchgear is
securely fastened.
In general a minimum distance of
100 mm is to be maintained between the
rear wall of the panel and the building wall.
When determining the space to
the building wall at the rear, note that the depths of the individual
EA panel types vary.
A flat, level floor is a required for the
stress-free installation of the switch
panel. Pay attention to the information in DIN 43661. In particular the tolerance on
the evenness (maximum 1 mm over a
measured length of 1 m) and the tolerance on the straightness (maximum
1 mm per metre and maximum 2 mm
over the entire length of the foundation rail) are to be observed.
We recommend the usage of a
foundation frame let into the floor of the switchgear room or a raised floor for the
installation of the switch panels.
To fasten the switch panel to a raised
floor, we recommend the following
fastening material:
– Hexagon screw M10
(minimum M8, strength class 5.6) DIN EN ISO 4017
– Washers DIN EN ISO 7093 (switch
panel side)– Washers DIN EN ISO 7089/7090
(raised floor side) or tapered
washers for fastening to U-sections– Spring lock ring DIN 127 / DIN 128
– Hexagon nut DIN EN ISO 4032
In the case of installation on concrete,
only the fastening material in the items
supplied is to be used (Fig. 12):
– Impex plug M10 (4 pieces)
– Screw DIN 933-M10x80 (4 pieces)– Washer DIN 125-A10.5 (4 pieces)
– Spring lock ring DIN 128-B10
(4 pieces)– Nut DIN 934-M10 (4 pieces)
Fig. 11
Table 3 (Dimensions in mm)
Fig. 12
Note!
12264543 01 05
10
0
102 C 28 x 14
E
13
0F A
D
B
6022
32
G
60 x 50
B/2
KK
75
62
12260064 00 37
Screw DIN 933-M10x80Impex plug M10
Nut DIN 934-M10 Washer DIN 125-A10.5 Spring lock ring DIN 128-B10
Panel width B A C D E F G K
750 950 546 630 896 770 378 210
900 1100 696 780 1046 920 453 230
12264542-03 10.2012 EN
18
3.6 Removing the lifting eyes
After moving the switch panel to the
place of installation, remove the lifting
eyes:
Remove anchoring nuts (AF 24)
in the interior of the switch panel (behind the back plate of the low voltage
compartment) and remove lifting eyes
(Fig. 13).
Store the lifting eyes and the
related nuts in a suitable place for subsequent transport of the switch
panel.
To ensure secure seating of the screws on renewed installation of
the lifting eyes, tighten the nuts to
a torque of 210 Nm.
If further switch panels are
installed in a group, the assembly
instructions "Panel installation for air-insulated, metal-clad
switchgear Type EA", article
no. 12262171 are also to be followed.
3.7 Fitting the bus bars
The bus bars are assembled as per the
assembly instructions "Panel installation
for air-insulated, metal-clad switchgear Type EA", article no. 12262171.
Fit the bus bars before the
pressure relief device, as the bus
bars are easy to reach via the opening in the top of the panel.
Fig. 13
As an option, the circuit-breaker
can be removed from the panel using an auxiliary carriage. It is
then easy to fit the bus bars from
the front.
1.
2.
Attention!
Attention!
Note!
12264543 00 13
Eyebolt DIN 580-M16x27
Nut DIN 934-M16
Note!
12264542-03 10.2012 EN
19
3.8 Assembly of the pressure
relief device
The pressure relief device for the EA
circuit-breaker panel is supplied separately and is to be fitted after
anchoring the panel and connection into
the group in the place of installation.
3.8.1 Assembly of the arc-fault
deflecting shield with pressure
relief flap (standard)
The arc-fault deflecting shield with pressure relief flap is pre-assembled in
the factory to ease the installation of the
switch panel in the installation location.
The deflecting shields with
pressure relief flaps differ
depending on the positioning of the panel (middle or left or right
end panel). For this reason
ensure the deflecting shields for the different panels are not mixed
up during installation.
Place arc-fault deflecting shield
with pressure relief flap on the
switch panel frame in front of the rear crossbar and push toward the rear of the
panel to the stop (Fig. 14).
The clamping sheets on the underside must engage under the crossbar during
this process.
Bolt pressure relief flap in place on
the panel frame as shown in
Fig. 15.
On switchgear end panels,
further shields may be fitted to the arc-fault deflecting shield or
may need to be fitted. For details
on this issue, see assembly instructions "Panel installation for
air-insulated, metal-clad
switchgear type EA", article no. 12262171.
Fig. 14
Fig. 15
Note!
1.
2.
Note!
12264543 00 53
Clamping sheet
Rear switch panel frame crossbar
Arc-fault deflecting shield with pressure relief flap
12264543 00 54
Washer DIN125-A8.4
Spring lock ring DIN128-A8
Screw DIN933-8.8 M8x20
Low voltage compartment
12264542-03 10.2012 EN
20
3.8.2 Assembly of the arc-fault
absorber (optional)
Circuit-breaker panels with closed panel
bottoms can be equipped with an arc-fault absorbers.
The absorber is supplied separately and
is to be fitted as follows:
Undo front panel on the absorber
and remove metal cooling stretch arrangement as well as ceramic
elements from the absorber enclosure.
Place absorber enclosure on the
switch panel frame in front of the
rear crossbar and push toward the rear of the panel to the stop (Fig. 16).
The clamping sheets on the underside
must engage under the crossbar during this process.
Screw absorber enclosure to the switch panel frame as shown in
Fig. 17 (1 x on the left-hand and right-
hand side each and 3 x on the front side).
Insert a metal cooling stretch arrangement into the absorber
enclosure.
Fill absorber enclosure with the
ceramic elements (total
12 pieces).
Place metal cooling stretch
arrangement on top of the ceramic elements and push into the
absorber enclosure.
Fit front panel to the front of the
absorber enclosure.
The absorber's front panel is used for assembling the arc-fault
deflecting shield.
To assemble the arc-fault deflecting shields, see assembly
instructions "Panel installation for
air-insulated, metal-enclosed switchgear Type EA", article no.
12262171. The assembly for EA
circuit-breaker panels is accordance with the description
of EA load-break switch panels.
Fig. 16
Fig. 17
1.
2.
3.
4.
5.
6.
7.
Note!
Absorber enclosure
Switch panel frame
Clamping sheet
WasherDIN 125-A8.4
ScrewDIN 933 M8x20
Absorber enclosure
Metal cooling stretch arrangement
Ceramic element
Front panel
12264542-03 10.2012 EN
21
3.9 Laying the incomer for the
auxiliary and control circuits
There are cable ducts inside the switch
panel on the left and right for laying the incomers for auxiliary and control circuits
(Fig. 18).
– Open door on the low voltage
compartment.
– Open switch panel door (see chapter
5.4).
– On the switch panel's plinth, undo the
two fixing screws on the shroud for
the related cable duct (left or right) and remove shroud.
– From the low voltage compartment, insert cable through the opening in
the base of the low voltage
compartment into one of the cable ducts on the side of the switch
panel's frame.
– Push cable downwards, remove plug
at the bottom of the cable duct and
guide cable through the opening to the cable duct in the plinth.
– Place cable in the cable duct to the rear and lay to the rear.
– After laying the cables, re-fit plug and shroud to the cable duct in the plinth.
Fig. 18 (EA…LSG panel)
Cable duct in the plinth
Side cable duct
Opening in the base of the low voltage compartment
Plug
12264542-03 10.2012 EN
22
3.10 Connecting the station earth
The EA switch panel must be earthed in
accordance with
the requirements of DIN VDE 0141 and IEC 62271-200.
With a switchgear width of up to
5 m it is sufficient to connect the
station earth once.With a switchgear width in excess
of 5 m, it is necessary to connect
the station earth at least every 5 m to points as far apart as
possible.
In general, attention is to be paid to
ensuring the earth connection has the
same current rating as the rated short-time withstand current Ik (for tk = 1 s) for
the EA switchgear.
The earth connection is made, as shown
in Fig. 19, at the rear on the switch panel
plinth.
3.11 Fitting the sectionaliser bars
(panels type EA…LSG-…)
The sectionaliser bars are fitted as per
the assembly instructions "Panel
installation for air-insulated, metalclad switchgear Type EA", article
no. 12262171.
Fig. 19
Note!
12264543 00 18
Connection for station earth
Bushing for earth cable
12264542-03 10.2012 EN
23
3.12 Connection of the power cable
(panels type EA…LS-…)
The following descriptions and
figures apply to EA circuit-
breaker panels with bottom plates; for panels without bottom
plates the instructions still apply,
only the work in relation to the
bottom plates can be ignored.
Open switch panel door (see
chapter 5.4).
To obtain access to the fittings for
the bottom plates, remove the shrouds on the side cable ducts (see
Fig. 20). For this purpose, undo the two
fixing screws and remove shroud.
Undo the fixing screws for the
three front bottom plates (see
Fig. 21) and remove the bottom plates. Remove rear bottom plate first, as this is
on top of the plate in front.
Fig. 20
Fig. 21
Note!
1.
2.
3.
12264543 00 15
Bottom plates
Cable duct shroud
Cable fixing iron
12264543 00 16
Screw DIN933-M8x20 8.8
Washer DIN9021-8,4
Spring lock ring DIN128 A8
Nut DIN934 M8
12264542-03 10.2012 EN
24
Fit suitable cable clamps
(available as an option) to the cable fixing iron and open. During this
process, follow the assembly
instructions from the manufacturer.
Guide power cables through the
floor opening and cut to length.
Push the rubber cable grommets
supplied onto the power cables.
Fit cables with suitable cable
termination for indoor switchgear (not included in the items supplied) to
suit the rated voltage and the cable
cross-section. During this process, follow the assembly instructions from the
manufacturer.
Align cable fixing iron, taking into
account the cable cross-section
and the position of the cable lug, vertically under the connection and bolt
in place.
Connect cable to the EA switch
panel.
For this purpose, lightly grease the connection with assembling paste,
article no. 12201700 and screw the
cable termination to the connection position using the existing fitting (AF19).
Pay attention to tightening torques from
the cable termination manufacturer.
Fix the cables to the cable
clamps so they are free of strain.
The cables must be fitted so they
are free of stress and strain. The connections have slots.
Slight distortion is to be
compensated by again undoing and re-tightening the terminal
screw.
Pay attention to tightening torques from the cable
termination manufacturer.
Fig. 22
4.
5.
6.
7.
8.
9.
10.
Attention!
12264543 00 17
Cable connection
Cable termination
Cable clamp
Cable fixing iron
Rubber cable grommet
Power cable Cable duct
12264542-03 10.2012 EN
25
Connect cable lugs for the cable
screens to the cable fixing iron's earthing terminals (Fig. 23).
On EA20 panels the earthing terminals
are at the bottom on the front of the cable fixing iron.
Fit the front bottom plates in the reverse order of assembly
step 3 and bolt in place.
Push down rubber cable
grommets and fit into the split
bottom plates.
Re-fit the shrouds for the side
cable ducts removed in work step 2.
3.13 Attachments
For additional relevant information on the wiring of the EA switch panel (for
example transformer wiring), please
refer to the enclosed circuit documentation.
Fig. 23 (Fig. shows EA10LS panel)
11.
12.
13.
14.
12264543 00 59
Bottom plates
Rubber cable grommet
Cable fixing iron
Cable screen
Shroud cable duct
12264542-03 10.2012 EN
26
4 Technical description
4.1 EA circuit-breaker panel
The EA circuit-breaker panel is a quality
product manufactured to the
requirements of DIN ISO 9001. It has the following features:
– Metal-enclosed
– Low maintenance
– Type-tested
– Can be connected to groups on both sides
– High availability.
4.2 Enclosure
The enclosure comprises a strong, stiff,
riveted sheet-metal frame construction.
A sheet-steel door with pressure-proof
torsion rod closure forms the front of the panel. An inspection window in the panel
door makes it possible to check the
switchgear fitted and its connected position.
A partitioning panel wall is fitted between two neighbouring switch panels. The
partitioning panel wall is equipped with
bushings for busbars and sectionaliser bars if necessary (Fig. 24).
As the circuit-breaker panel is deeper
than the other EA panels to be connected in a group, the protruding part
of the circuit-breaker panel is equipped
with an adapter cassette.
To terminate switchgear to the side, the
end panels are secured with a plastic end wall and a sheet-steel end cassette
(Fig. 25).
Prior to commissioning the
switchgear, assemble the switch panels as per the assembly
instructions "Panel installation for
air-insulated, metal-clad switchgear Type EA", article no.
12262171.
Fig. 24
Fig. 25
12264543 00 19
Panel intermediate wall
EA panel to be connected to a group
Adapter cassette
12264543 00 20
Plastic end wall
Sheet-steel end cassette
EA end panel
12264542-03 10.2012 EN
27
4.3 Termination of the panel at the
top
As standard, the pressure relief in the
event of an arc-fault is upwards via a pressure relief flap (Fig. 26) that is
hinged at the front and directs the
pressure to the rear.The pressure relief flap is integrated into
the panel's arc-deflecting shield and is
fitted to the panel's frame as per chapter 3.8.1.
On end panels, the pressure relief flap is
equipped with an arrester (see Fig. 2 on Page 6) to direct the gas produced in the
event of an arc-fault to the middle of the
switchgear.
The deflecting shields with
pressure relief flaps differ
depending on the positioning of the panel (middle or left or right
end panel). For this reason
ensure the deflecting shields for the different panels are not mixed
up during installation.
As an option, the circuit-breaker panel
can be equipped with a bottom plate. If
the panel bottom remains open, the pressure is relieved both upwards via the
pressure relief flap and downwards into
the raised floor.To reduce the pressure in the switchgear
room in the event of an arc-fault, switch
panels with a closed panel bottom can be equipped with an arc-fault absorber
(Fig. 27).
For safety each switch panel is equipped
with an arc-fault deflecting shield
(Fig. 26 and Fig. 27).
The arc-fault deflecting shield is
assembled to switch panels with arc-fault absorbers as per the assembly
instructions "Panel installation for air-
insulated, metal-enclosed switchgear Type EA", article no. 12262171.
Fig. 26
Fig. 27
On end panels it is necessary to
fit additional arc-fault deflecting
shields.For more detailed information,
refer to the assembly instructions
"Panel installation for air-insulated, metal-clad switchgear
Type EA", article no. 12262171.
Attention!
12264543 00 55
Arc-fault deflecting shield
Pressure relief flap
Arc-fault deflecting shield
Arc-fault absorber
12264542-03 10.2012 EN
28
4.4 Current transformers and
voltage transformers
As an option, current/voltage
transformers in accordance with DIN 42600 part 8 and 9 (narrow design)
can be installed in panels of type
EA…LS-/LSG-… .As standard, the current transformers
are installed on the back plate, the
voltage transformers are fitted in the base in front of the cable terminations or
sectionaliser bars.
4.5 Busbars / Sectionaliser
busbars
The busbars are strapped from panel to
panel. They consist of round copper (Ø 16 mm), are of partially insulated
design, and are marked with the labels
L1, L2, L3.
The bus bars are assembled as per the assembly instructions
"Panel installation for air-
insulated, metal-clad switchgear Type EA", article no. 12262171.
4.6 Cable fixing iron
The cable fixing iron comprises a galvanised folded sheet-metal part. It is
continuously adjustable for depth such
that all common cable terminations can be used and the cables can be fastened
using cable clamps (available as an
option).
The cable fixing iron is also connected to
the switch panel plinth using an earth cable (see Fig. 28).
The cable screens on the power cable are connected to the cable fixing irons
using cable lugs.
On EA20 panels the top of the cable fixing iron is inclined to the rear, the
holes for the connection of the cable
screens are on the front of the cable fixing iron.
Fig. 28 Cable fixing iron EA10LS panel
Note! 12264543 00 15
Cable fixing iron
12264542-03 10.2012 EN
29
4.7 Vacuum circuit-breaker type
NVL2E with compact drawer
unit KE
A vacuum circuit-breaker of type NVL2E with compact drawer unit KE is used in
the circuit-breaker panel.
Using the drawer unit it is possible to move the circuit-breaker to the two
positions "Test" (disconnected position)
and "Operation" (connected position). As an option, the panel is available with
limit switches that output the position of
the circuit-breaker for the indicator in the relay box or for remote maintenance.
The vacuum circuit-breaker can be
removed from the switch panel complete with the drawer unit using an auxiliary
carriage, see operating instructions
„Auxiliary carriage for air-insulated, metal-clad switchgear Type EA“, article
no. 12264549.
The vacuum circuit-breaker
NVL2E can be replaced if
necessary.
The vacuum circuit-breaker of
type NVL2E removed from the panel is not allowed to be set
down directly on the floor. There
are interlocking features on the underside of the drawer unit that
may be damaged (see operating
instructions „Vacuum circuit-breaker Type NVL“, article no.
12256860).
After replacing of vacuum circuit-
breaker all functions, including
the interlocks have to be checked.
Fig. 29
Fig. 30
Note!
Attention!
Note!
12264543 00 23
Compact drawer unit KE
Auxiliary carriage
Circuit-breaker NVL2E
12264543 00 24
Connector control/signal wires
Attachment for auxiliary switch "Disconnected/Connected position"
Attachment for earthing switch interlock (mechanical)
12264542-03 10.2012 EN
30
4.8 Earthing switch
The earthing switch DES...-E1 (Fig. 31)
is used in the EA circuit-breaker panel.
The earthing switch is actuated manually
using a lever inserted in the front of the
panel with the switch panel door closed.As standard, the plug-in opening is
sealed by a transparent shroud.
The status indication for the earthing
switch indicates the two switch positions
using the follow colours:
Red: Earthing switch "ON"
(outgoing cable earthed)
Green:Earthing switch "OFF"
(outgoing cable not earthed)
The switches are only allowed to be actuated with the door closed.
Prior to switching on the earthing
switch, it is to be checked the outgoing cable is electrically
isolated (see chapter 6.2).
The check for electrical isolation must always be made on the
outgoing cable that is to be
earthed and short circuited.
It is only possible to actuate the
earthing switch if the circuit-
breaker has been switched off and moved to the disconnected
position.
Never actuate with excessive force.
The switch is always to be
actuated until it is clearly in the end position!
Fig. 31 (EA…LSG panel)
Note!
Attention!
12264543 00 49
Shroud over earthing switch drive disc
Position Outgoing cable not earthed
Position Outgoing cable earthed
12264542-03 10.2012 EN
31
4.9 Switch panel interlocks
Table 6
- Function locked
� Function can be used
� Function can be used as an option1) If circuit-breaker switched off2) If drawer unit in disconnected position3) If drawer unit hand crank removed4) If spring accumulator tensioned
Not all interlocks on the circuit-
breaker panel are visible.
Never actuate with excessive
force.
* Example:
'Remove secondary connector' only
possible if switch panel door is open,
drawer unit is in disconnected position and secondary connector is unlocked
(the position of the circuit-breaker and
the earthing switch are not relevant in this case)
Drawer unit Circuit-breaker
Crank Secondary
connector
Switching
Unlock Insert Turn Remove Remove On Off
Sw
itch
pa
nel
do
or
Clo
sed - � � � - �
3) 4) �
Op
en �
2) � � � � �3) 4) �
Dra
wer
un
it
Po
sitio
n
Dis
co
nn
ecte
d � � � � � �3) 4) �
Inte
rme
dia
te - - � - - - -
Co
nn
ecte
d - � �1) � - �
3) 4) �
Cir
cu
it-b
rea
ke
r
Sw
itch
po
sitio
n
Off
�2) � � � � �
3) 4) -
On
�2) - - - � - �
Se
co
nd
ary
con
ne
cto
r
inte
rlo
cke
d �2) � � � - �
3) 4) �
Unlo
cked �
2) � - � � �2) 3) 4)
�2)
Eart
hin
g
sw
itch
Sw
itch
positio
n
O
ff �
2) � � � � �3) 4) �
On �
2) - - - � �2) 3) 4)
�2)
Note!
Re
ad
ing
dir
ection
fo
r fu
nctio
na
l
inte
rlo
ck (
se
e e
xa
mp
le*)
12264542-03 10.2012 EN
32
4.10 Low voltage compartment
4.10.1 General
The low voltage compartment (relay box) is metal-clad in relation to the
medium-voltage section.
Along with control and display units, the
cover can be equipped with a capacitive
coupling unit (voltage indication ledge) as well as other indicators.
The cover for the low voltage compartment must be opened to insert
or remove the insulating plate (see
chapter 4.11).
To check whether the insulating plate
has been inserted, the cover for the low voltage compartment is equipped with
an inspection window. If the insulating
plate is fitted, the sign labelled "insulating plate inserted" is visible in the
inspection window.
4.10.2 Control and display unit
The cover for the low voltage
compartment is equipped with control
and display units to suit the customer's requirements.
For more information, see documentation provided from the
manufacturer of the equipment.
Fig. 32
12264543 00 21
Low voltage compartment
Inspection window or control and display unit (optional)
Capacitive coupling unit
Insulating plate inspection window
12264542-03 10.2012 EN
33
4.11 Insulating plate
An insulating plate is used in the circuit-
breaker panel to secure the operating
range for the busbar.
The insulating plate provides
protection against direct
contact with the live assembly
parts in the area of the busbar
line. The insulating plate must
be fitted prior to working in the
switch panel.
To insert the insulating plate in the
switch panel:
Switch off circuit-breaker as per
chapter 5.7.4; check outgoing
cable is electrically isolated as per chapter 6.2.
Once electrically isolated, move circuit-breaker to the
disconnected position, see chapter
5.6.2.
Open the cover for the low voltage
compartment, see chapter 5.4.
Fit the insulating plate to the
protruding lug under the slot for the plate and push in to the stop as
shown in Fig. 33 using both hands.
Pay attention to sticker on the
insulating plate.
Only take hold of the insulating
plate in the area in front of the
black dotted line.
Close cover for low voltage
compartment and lock using
fastener key.
To remove the insulating plate, proceed in the reverse order of
mounting steps 1 to 5 as
appropriate.
Fig. 33
1.
2.
3.
4.
5.
Note!
12264543 00 25
Slot for insulating plate
Lug for positioning the insulating plate
Insulating plate
12264542-03 10.2012 EN
34
4.12 Locking features for panel
door and drives (optional)
As an option
– The mechanical push-buttons for
switching the circuit-breaker
– The opening for the circuit-breaker's
manual winding up
– The plug-in opening for the earthing
switch device
– Fasteners for the switch panel door
can be secured using a lockable transparent shroud (Fig. 34).
To obtain access to the actuators, unlock the lock (half cylinder provided by
customer or utility) and push the
transparent shroud to the right.The actuators are now freely accessible
(Fig. 35).
Fig. 34
Fig. 35
12264543 00 40
12264543 00 50
12264542-03 10.2012 EN
35
4.13 Bottom plate (optional)
All EA circuit-breaker panels can be
equipped with a bottom plate. The
bottom plates are bolted at the side to the switch panel's frame.
Openings are provided for the cable bushings in which rubber grommets are
fitted to protect the cables.
To simplify cable installation, the bottom plates are split in the area of the cable
bushings.
On switch panels with bottom plates, the
pressure relief is only upwards via the
pressure relief flap or arc-fault absorber.
On sectionaliser circuit-breaker
panels, a one-piece bottom plate
is used instead of the split bottom plate.
The bottom plate is already fitted
on delivery. To connect the power cable, the front bottom
plates must be temporarily
removed, see chapter 3.12.
Fig. 36 Bottom plate EA... LS
Note!
Note!
12264543 00 15
Cut-outs for power cable
Bottom plate
Bottom plate, split
12264542-03 10.2012 EN
36
4.14 Capacitive voltage indicating
system (optional)
To check for electrical isolation or to
perform a voltage test in accordance with VDE 0682 part 415 and
IEC 61243-5, the switch panel can be
equipped with an optical indicating system.
Before disconnecting a switch panel in operation from the mains
and prior to connecting a switch
panel to the mains, the panel must be checked for electrical
isolation.
During the test for electrical isolation, all three phases (L1, L2,
L3) are always to be checked!
For information on operation and further details refer to the
manufacturer’s instructions of the
appropriate voltage indicating system.
4.14.1 Integrated voltage indicating
system (System CPI, Company
Kuvag, Fig. 37)
This device signals that a medium range
voltage is present at the test point using
indicators.
Fig. 37
System FeaturesCPI VI-3P Integrated three-phase
continuous indication
CPI VI-3P/R Integrated three-phase continuous indication,
Auxiliary relay
Attention!
Indicator
Shroud on the test sockets
12264542-03 10.2012 EN
37
4.14.2 Integrated voltage detecting
system (System WEGA,
Company Horstmann, Fig. 38)
General
The integrated voltage detecting system
WEGA complies with the requirements
for voltage detection systems of the VDE 0682-415 (IEC 61243-5).
It is a three-phase system, with which
the following conditions of a medium voltage network are indicated:
– Voltage present:arrow indication per phase
– Voltage present and requirements of maintenance test fulfilled:
additional dot per phase
– Voltage not present:
no indication
– Fault in the system / Zero voltage:
indication of flashing screw-wrench
per phase (only WEGA 2.2)
Fig. 38
Design
The integrated voltage detecting system
is located in a built-in housing, adapted
for a control panel cutting of 92 x 45 mm. Arranged on the front panel are the LCD,
the display test button and the three-
phase LRM-interface. As protection against dust and corrosion, the jacks are
provided with a captive plug. The
connections for measuring signals and auxiliary voltage are located on the rear
side.
The status of voltage is indicated on the
LC-Display. The various symbols are
shown in red. A display test can be carried out by means of a display test
button on the front panel; all symbols will
be shown temporary.
No auxiliary energy is needed for
indicating the arrow and dot symbols on the LCD, which is supplied by the
measuring signal. These indications are
also active in case of a loss of the auxiliary voltage. The additional
functions (relay triggering, illumination of
indication and active zero indication) require auxiliary energy.
System FeaturesWEGA 1.2 Integrated three-phase
continuous LCD indication,
Self monitoringWEGA 2.2 Integrated three-phase
continuous LCD indication,
Self monitoring,Auxiliary relay
12264542-03 10.2012 EN
38
4.14.3 Integrated voltage indicating
system (System CAPDIS,
Company Kries, Fig. 39)
CAPDIS is a capacitive voltage indicator with continuous three-phase indication
and permanent self monitoring.
This device indicates that there is a
voltage present at the test point on the
capacitive insulating support by displaying lightning arrows on the
integrated display.
Display explanation:
– Voltage-free:no indication
– Voltage present:half lightning arrow
– Nominal voltage present:full lightning arrow
No additional voltage indicating devices and no repeat tests are necessary.
In addition, the device has an integrated three-phase measuring point. This
device is calibrated in accordance with
LR requirements as per VDE 0682 part 415 and IEC 61243-5 and is
suitable for phase testing using an LR
phase comparator.A captive shroud protects the test
sockets against dirt, dust and moisture.
Fig. 39
System FeaturesCAPDIS-
S1+
Integrated three-phase
continuous LCD indication,
Self monitoringCAPDIS-
S2+
Integrated three-phase
continuous LCD indication,
Self monitoring,Auxiliary relay
12264542-03 10.2012 EN
39
5 Operation
5.1 Switching types
In principle the circuit-breaker can be
operated in two ways:
– Mechanically
– Electrically (optional).
In the normal case, the circuit-breaker is
operated mechanically. Electrical operation is also possible.
Electrical circuit-breaker actuation
The circuit-breaker is actuated electrically using the control and
indication element in the low voltage
compartment on the EA circuit-breaker panel.
As the EA circuit-breaker panel can be
fitted with different control and indication elements to suit specific customer
needs, the steps necessary to switch the
switch panel may vary. Please refer to the project
documentation for information on the
steps necessary to switch the circuit-breaker panel.
Mechanical circuit-breaker actuation
Mechanical actuation of the circuit-breaker is performed using the controls
on the front of the switch panel, see
Fig. 1.
The switches are only allowed
to be actuated with the door
closed.
For details on the layout of the
switch drive and the mechanical processes for switching on and
off the circuit-breaker, see
operating instructions "Vacuum circuit-breaker Type NVL", article
no. 12256860.
Fig. 40
5.2 Switching accessories
To switch the EA panel mechanically,
the following accessories are required
(Fig. 40):
1. Switching lever for the earthing switch (available as
an option in red paint finish)
2. Hand crank for tensioning the
spring accumulator for the
circuit-breaker as well as for unlocking and moving the
drawer unit
3. Fastener key
Never leave switching levers in
the actuating shafts/openings.
5.3 State of the switch panel as
delivered
The switch panels are generally delivered as single panels completely
assembled. The drawer units are
delivered separately.
On delivery, the EA switch panel is in the
following state:
� Doors (fastener) closed
� Earthing switch activated.
On delivery, the circuit-breaker is in the
following state:
� Circuit-breaker switched off
� Spring accumulator released� Circuit-breaker in disconnected
position.
We recommend to insert of the withdrawable unit into the
switchgear panel using the EA-
auxiliary carriage. The EA-auxiliary carriage is not included
in standard delivery - it can be
ordered seperately. The insertion of the withdrawable
unit is discripted in operating
instructions „Auxiliary carriage for air-insulated, metal-clad
switchgear Type EA“, article no.
12264549.
Note!
12264543 00 26
2
2
1
Attention!
Note!
12264542-03 10.2012 EN
40
5.4 Opening and closing the
switch panel door
The following description applies
to the version: Door hinges on
right.
All EA panel doors are equipped with
pressure-proof torsion rod closures.
On panels with lockable transparent shroud, the
information on the locking
features for the door and the drives given in chapter 4.12 is
also to be followed.
Opening the panel door
Turn the fastener clockwise using
the fastener key (Fig. 41).
Turn both actuating levers for the
torsion rod closure 90° to the
outside (Fig. 42).
Now open the unlocked door to
the front.
Closing the panel door
Keep both actuating levers for the
torsion rod closure at 90° in the
direction of the corridor and at the same time press the panel door against the
panel's frame (Fig. 43).
Turn both actuating levers for the
torsion rod closure in the direction
of the panel until they lock.The door is now secured so it is
pressure-proof.
Turn both fasteners counter-
clockwise using the fastener key
to lock the door.
Fig. 41
Fig. 42 Opening the switch panel door Fig. 43 Closing the switch panel door
Note!
Note!
1.
2.
3.
1.
2.
3.
12264543 00 10
12264543 00 11 12264543 00 12
(Shown without arc-deflecting shield)
12264542-03 10.2012 EN
41
5.5 Earthing the switch panel
5.5.1 Actuating the earthing switch
The switches are only allowed
to be actuated with the door
closed.
Prior to switching on the earthing switch, the crank must be
removed from the travel spindle
for the circuit-breaker drawer unit. Otherwise the interlock
between the earthing switch and
the circuit-breaker drawer unit may be damaged.
The earthing switch can only be
actuated if the circuit-breaker is switched off and is in the
disconnected position.
This interlock is not visible! Never actuate with excessive force.
On panels with lockable
transparent shroud, the
information on the locking features for the door and the
drives given in chapter 4.12 is
also to be followed.
Fig. 44
Switching on the earthing switch
Open shroud over the earthing switch device and insert switching
lever in the opening for the earthing
switch.
Pivot switching lever downwards
by approx. 90° (Fig. 44/1) to switch on the earthing switch.
Remove switching lever from the opening.
With the earthing switch switched
on, the opening for the travel
spindle for the circuit-breaker drawer unit is sealed by a plate.
It is only possible to switch on the
earthing switch in the disconnected position.
Switching off the earthing switch
Open shroud over the earthing
switch device and insert switching
lever in the opening for the earthing switch.
Pivot switching lever upwards by approx. 90° (Fig. 44/1) to switch
off the earthing switch.
Remove switching lever from the
opening.
Attention!
Attention!
Note!
12264543 00 31
1
2
1.
2.
3.Note!
1.
2.
3.
12264542-03 10.2012 EN
42
5.5.2 Earthing with earthing and
short-circuiting device
Depending on customer requirements,
the EA-circuit-breaker panel is equipped with ball pins as fixed phase points. Both
studs and earthing ball pins can be used
in the switch panel as fixed earthing points; these are fitted at the bottom on
one of the two side cable ducts.
The position of the earthing ball
pins is only shown in Fig. 45 as an example, the actual mounting
position may vary as a function of
the equipment fitted to the switch panel and customer
requirements.
Using the fixed phase points and the
fixed earthing point for the switch panel it
is possible to earth using an earthing and short-circuiting device (Fig. 45).
The diameter of the head of the earthing ball pin is 20 mm or 25 mm (optional).
We recommend using a Cu 150
mm² earthing lead and Cu 150
mm² phase lead. Ball clips for ball pins are to be
used as the terminals for the
phase and earthing points. As an option the earthing terminal is
designed as a stud M12 or M16.
Fig. 45
Earthing and short-circuiting devices as well as fixed phase and earthing points
must be rated for the short-circuit current
and the possible duration of the short-circuit on site.
The fixed ball points used in the switch panel, diameter 20 mm and 25 mm, are
designed for short-circuit currents
29.6 kA, 1 s as per DIN VDE 0683 and DIN 48088. Correct usage as a function
of the possible short-circuit current in the
location the switchgear is used is to be ensured by the operating organisation.
During earthing and short-
circuiting,
the standards in VDE 0105
part 100 and VDE 0683
part 100 are to be followed.
The earthing ball pin must be free of dirt and grease.
Attach the ball clip (or butterfly nut) for the earthing lead to the
fixed earthing terminal on the switch
panel and tighten firmly.
Short-circuit phases.
Attach the (earthing) ball clip for the related phase lead to the related
fixed phase point using an operating rod
and tighten firmly.
Note!
Note!
12264543 00 34
Earthing and short-circuiting device
Fixed phase point
Fixed earthing terminal switch panel
1.
2.
Earthing with earthing and short-circuiting fittings(Shown with stud as switch panel fixed earthing terminal)
12264542-03 10.2012 EN
43
5.6 Moving the circuit-breaker
5.6.1 Moving the circuit-breaker
from the disconnected
position to the connected
position
If necessary, switch off circuit-breaker.
Ensure that the drawer unit is locked in the switch panel. If
necessary lock the drawer unit by using
the hand crank according to Fig. 46.
Insert low voltage connector in the
coupling provided (Fig. 47/1).
Lock low voltage connector. For
this purpose, pull the locking bar up to the stop (Fig. 47/2).
Close switch panel door (Fig. 47/3), see chapter 5.4.
If the insulating plate is inserted in the panel ("insulating plate
inserted" is visible in the inspection
window on the low voltage compartment), remove insulating plate
from the panel (see chapter 4.11).
Switch off the earthing switch, see
chapter 5.5.1.
The earthing switch status indication must indicate "green".
The switch is always to be
actuated until it is clearly in the end position!
It is only possible to move the
drawer unit if the circuit-breaker and the earthing switch are
switched off.
The switch panel door is to be closed (close both fasteners
carefully). This makes the
unlocking lever is pushed in operating position.
The insulating plate must not be
inserted in the panel.
Fig. 46
Fig. 47
1.
2.
3.
4.
5.
6.
7.
Attention!
Attention!
12264547 00 09
locking bolt
12264543 00 32
3
2
1
12264542-03 10.2012 EN
44
Press the unlocking lever to
release the opening for the travel spindle first to the left to the stop and
then downwards (Fig. 48).
Insert the hand crank in the
opening for the travel spindle.
The travel spindle is only
released if the earthing switch has been switched off.
Move circuit-breaker from the disconnected position to the
connected position. For this purpose
turn the spindle to the right to the stop with the aid of the hand crank.
The rotary movement of the
spindle is only released if the low voltage connector has been
correctly connected to the
coupling and locked.
Remove crank from the travel
spindle.
The hand crank can only be removed in the disconnected or
connected position. If the circuit-
breaker is between these positions (movement end
positions), it is not possible to
remove the crank.
Fig. 48
8.
9.Note!
10.
Note!
11.Note!
12264543 00 33
Travel spindle unlocking lever
Travel spindle hand crank
12264542-03 10.2012 EN
45
5.6.2 Moving the circuit-breaker
from the connected position to
the disconnected position
Switch off the circuit-breaker, see chapter 5.7.4.
Press the unlocking lever to release the opening for the travel
spindle first to the left to the stop and
then downwards (Fig. 49).
Insert the hand crank in the
opening for the travel spindle.
Move circuit-breaker from the
connected position to the disconnected position. For this purpose
turn the spindle to the left to the stop with
the aid of the hand crank (Fig. 49).
Remove crank from the travel
spindle.
The hand crank can only be
removed in the disconnected or
connected position. If the circuit-breaker is between these
positions (movement end
positions), it is not possible to remove the crank.
Prior to switching on the
earthing switch, the crank
must be removed from the
travel spindle. Otherwise the
interlock between the earthing
switch and the circuit-breaker
drawer unit may be damaged.
Fig. 49
1.
2.
3.
4.
5.
Note!
Attention!
12264543 00 36
Travel spindle unlocking lever
Travel spindle hand crank
12264542-03 10.2012 EN
46
5.7 Switching the circuit-breaker
panel
To switch the circuit-breaker panel, the
spring accumulator must be tensioned.The spring accumulator is either
tensioned by hand (see chapter 5.7.1) or
automatically if the circuit-breaker is equipped with a motor drive (optional)
(see chapter 5.7.2).
5.7.1 Tensioning the spring
accumulator by hand
If the spring accumulator indicator for the
circuit-breaker indicates 'UNTENSIONED' (see Fig. 50), the
spring accumulator must be tensioned
prior to switching.
To release the opening for the
manual winding up, push the slide upwards.
Insert hand crank in the opening and connect to the tensioning
coupling.
For design reasons, there is no
guide for the crank to the circuit-breaker.
If the circuit-breaker is in the
connected position, the crank must be inserted until only
approx. 5 cm of the shaft is left
protruding.
Slowly turn crank clockwise until
the shaft audibly engages (approx. 4.5 turns).
The spring accumulator indicator jumps
to 'TENSIONED' (Fig. 50).
Remove hand crank.
Fig. 50
5.7.2 Tensioning the spring
accumulator with optional
motor drive
On circuit-breakers with motor drive, the spring accumulator is automatically pre-
tensioned by the motor when the supply
voltage is present. The spring accumulator indicator jumps to
'TENSIONED' at the end of the
tensioning process (Fig. 50).
On the failure of the supply voltage, the spring accumulator
can be tensioned manually using
the crank (see chapter 5.7.1). The hand crank coupling is
designed such that if the motor
power supply becomes available again, the tensioning crank is de-
coupled.
On circuit-breakers that are
suitable for high speed reclosing,
the spring accumulator (closing spring) is re-tensioned again
immediately after switching. At
the end of the tensioning process, the drive energy is
available for the high speed
reclosing switching sequence OFF-ON-OFF.
1.
2.
Note!
3.
4.
12264543 00 37
Spring accumulatorUNTENSIONED
Spring accumulatorTENSIONED
Spring accumulator indicator
Crank, closing spring accumulator manual winding up
Slide
Note!
Note!
12264542-03 10.2012 EN
47
5.7.3 Switching on the circuit-
breaker
The switches are only allowed
to be actuated with the door
closed.
In the disconnected position, the
circuit-breaker can be simply
switched as a test, in this position no interlocks from other
assemblies are active.
To switch on the circuit-breaker in the
connected position:
First move circuit-breaker to the
connected position, if necessary
(see chapter 5.6.1). Continue with work step 5.
It is only possible to move the
circuit-breaker if the circuit-breaker and the earthing switch
are switched off and the switch
panel door is closed.
If the circuit-breaker is already in the
connected position:
Close switch panel door, if
necessary (see chapter 5.4).
If the spring accumulator indicator
indicates 'UNTENSIONED',
tension spring accumulator (see chapter 5.7.1).
If a motor drive is fitted and the
supply voltage is available, the spring accumulator is
automatically tensioned.
Fig. 51
Switch on circuit-breaker. For this purpose, actuate the ON ("I")
push-button on the switch panel door
(Fig. 51). The spring accumulator indicator jumps
to 'UNTENSIONED', the position
indicator changes from OFF ("0") to ON ("I").
On circuit-breakers with motor
drive that are suitable for high
speed reclosing, the spring accumulator is re-tensioned
again immediately after switching
on.
.
As an option, in addition to
switching using the ON ("I") push-
button, the circuit-breaker can also be switched using the
control panel in the cover on the
low voltage compartment or remote tripping.
Details on the electrical control of
the circuit-breaker are given on the specific diagrams for the
order.
Note!
1.
Note!
2.
3.
Note!
12264543 00 38
Spring accumulatorUNTENSIONED
Spring accumulatorTENSIONED
Spring accumulator indicator
Position indicator
ON ("I") push-button
4.
Note!
Note!
12264542-03 10.2012 EN
48
5.7.4 Switching off the circuit-
breaker
The spring accumulator indicator only indicates whether the
closing spring is tensioned. Even
if the spring accumulator indicator indicates
'UNTENSIONED', there is still
enough energy for switching off after switching on.
Switch off circuit-breaker.For this purpose, actuate the OFF
("0") push-button on the switch panel
door (Fig. 52). The position indicator changes from ON
("I") to OFF ("0").
As an alternative to switching
using OFF ("0") push-button, the
circuit-breaker can also be switched off using the control
panel in the cover on the low
voltage compartment or remote tripping.
Details on the electrical control of
the circuit-breaker are given on the specific diagrams for the
order.
The circuit-breaker can be moved from
the connected position to the
disconnected position if required (see chapter 5.6.2) and the earthing switch
switched on.
Prior to switching on the
earthing switch, the crank
must be removed from the
travel spindle. Otherwise the
interlock between the earthing
switch and the circuit-breaker
drawer unit may be damaged.
Fig. 52
Note!
1.
Note!
Attention!
12264543 00 39
Spring accumulator indicator
Position indicator
OFF ("0") push-button
12264542-03 10.2012 EN
49
6 Commissioning
6.1 Inspection activities and safety
instructions
We recommend during commissioning
on site, after completion of the assembly, to perform a power frequency voltage
withstand test as per VDE 0671 part 200
/ DIN EN 62271-200 section 7.105.
To commission the EA circuit-breaker
panel, its correct function is to be ensured by inspecting the following
points:
– Please compare the data on the
rating plate and the data on the
delivery paperwork with the order documentation.
– Check the secondary equipment in accordance with the information in
the circuit documentation for the
related switchgear configuration.
– Check all screwed connections
(cable connections, operational earthing, panel fittings) for correct
seating (tightening torque) and
proper fastening.
The sections on commissioning in the operating instructions
provided on the compact drawer
unit and the vacuum circuit-breaker used are also to be
followed.
In the case of the installation of
the EA- switch panel as an end
panel, ensure the end cassette is correctly fitted.
6.2 Checking for electrical
isolation
Before disconnecting a switch
panel in operation from the mains and prior to connecting a switch
panel to the mains, the panel
must be checked for electrical isolation.
During the test for electrical
isolation, all three phases (L1, L2, L3) are always to be checked!
Should the test for electrical isolation be performed without a
capacitive voltage indicator, the
requirements in accordance with DIN EN 50110-1 / VDE 0105-1
chapter 6 as well BGV A3 are to
be strictly observed.
Test with capacitive voltage
indicating system (see chapter 4.14)
The test is performed using the following
procedure:
– With the switch panel switched on
the capacitive voltage indicating system must indicate voltage for all
three phases.
– Switch off circuit-breaker.
– With the switch panel switched off the capacitive voltage indicating
system must not indicate voltage for
all three phases.
– Move circuit-breaker to the
disconnected position.
In the case of incoming switch
panels, reverse voltage from the supply network may be present.
– If no voltage is present, switch on earthing switch as necessary.
6.3 Phase comparison
A phase comparison between two
outgoers can be performed at the
insulated test sockets of the appropriate capacitive voltage indicating system
(see chapter 4.14).
For the phase comparator, e. g., the
following can be used:
– Make CATU, type MX 404
– Make HORSTMANN, type ORION 3.0 with additional part
– Make Pfisterer, type EPV
– Make ELSIC, type HO-PV.
The correct function of the phase comparison device must be
checked in compliance with the
instructions of the manufacturer.
Attention!
Attention!
12264542-03 10.2012 EN
50
6.4 Switching the EA switch panel
(manual)
The switches are only allowed
to be actuated with the door
closed.
The following switching sequences are to be followed.
SWITCHING ON
– Remove insulating plate from the
switch panel.
– Close doors and lock using fastener.
– Switch off the earthing switch.
Check the switch panel is electrically isolated using
capacitive voltage detecting
system (see chapter 6.2).
– Move circuit-breaker to connected
position.
– Tension spring accumulator or
switch on secondary voltage in case of motor drive.
– Switch on circuit-breaker.
Using the capacitive voltage
detecting system (see chapter 6.2), check whether voltage is
indicated for all 3 phases.
SWITCHING OFF
Using the capacitive voltage detecting system (see chapter
6.2), check whether voltage is
indicated for all 3 phases.
– Activate manual actuation for
connected position (only in case of switch off using mech. push-button
on the front of the switchgear).
– Switch off circuit-breaker by
actuating the OFF push-button.
Check the switch panel is
electrically isolated using
capacitive voltage detecting system (see chapter 6.2).
– Move circuit-breaker to disconnected position.
– Switch on earthing switch.
6.5 Switching using motor drive
(optional)
The switches are only allowed
to be actuated with the door
closed.
The following switching sequences are to be followed.
SWITCHING ON
– Remove insulating plate from the
switch panel.
– Close doors and lock using fastener.
– Switch off the earthing switch.
Check the switch panel is electrically isolated using
capacitive voltage detecting
system (see chapter 6.2).
– Move circuit-breaker to connected
position.
– Switch on secondary voltage.
The spring accumulator is automatically pre-tensioned by the
motor.
The indicator for the spring accumulator indicates the symbol for
"spring accumulator tensioned" after
a short time.
– To switch on the circuit-breaker,
press the "I" pushbutton or activate the related control for remote
tripping.
The position indication indicates "I".
Using the capacitive voltage
detecting system (see chapter 6.2), check whether voltage is
indicated for all 3 phases.
SWITCHING OFF
Using the capacitive voltage
detecting system (see chapter
6.2), check whether voltage is indicated for all 3 phases.
– To switch off the circuit-breaker, press the "0" pushbutton or activate
the related control for remote
tripping. The position indication indicates "0".
Check the switch panel is electrically isolated using
capacitive voltage detecting
system (see chapter 6.2).
– Move circuit-breaker to disconnected
position.
– Switch on earthing switch.
12264542-03 10.2012 EN
51
7 Maintenance
7.1 General
Maintenance, repair work and
subsequent modifications must
only be performed by appropriately qualified personnel
taking into account the operating
instructions, health and safety regulations and the regulations
from the german official labour
association.
Maintenance is used to ensure
continuing trouble-free operation and the longest possible service life of the
switchgear and the equipment
integrated. It covers the following, closely related areas in accordance with
DIN 31051 and IEC 1208:
• Inspection:
Determination of the actual state
• Maintenance:
Measures to preserve the nominal
state (ensuring trouble-free function)
• Repair:
Measures to restore the nominal state.
The circuit-breaker panel is maintenance-free.
The vacuum circuit-breakers feature a
simple and robust design.They have a long service life. Their
drives are low maintenance and the
vacuum contact chambers are maintenance-free for their entire service
life.
Even frequent switching of operating and short-circuit currents will not
degrade the vacuum.
The maintenance intervals for the mechanical assembly on the vacuum
circuit-breaker are defined by the
ambient conditions, operating frequency and number of short circuit breaks.
7.2 Inspection and maintenance
7.2.1 Inspection
Prior to inspection, electrically isolate and secure the operating
range in accordance with the
"safety rules" specified by DIN VDE/IEC.
The switchgear should be inspected, depending on operating conditions and
local conditions, as per BGV A3 and
TRBS approximately every four years, however at the latest after 10,000
operations of the vacuum circuit-
breaker.
In exceptional operating conditions
(these also include harsh climatic conditions) and/or heavy pollution
(including heavy soiling and aggressive
air), inspection may be required at significantly shorter intervals.
Inspection includes:
– Check switchgear and equipment for
anything unusual, soiling and the result of environmental effects.
– Perform several no-load switching operations, this instruction applies
particularly to circuit-breakers that
are switched infrequently in operation.
– Check function of the switchgear, e. g. its actuating device, interlocking
devices, trigger devices and
signalling devices and any other devices.
– Shut down motor winding (if fitted). On the circuit-breaker, actuate the
ON and OFF push-button as follows:
OFF-ON-OFF.
– Inspect the condition of the
lubrication at the bearing points, sliding surfaces, etc.
– Determine the subsequent measures (maintenance, service) taking into
account the maximum number of
operations allowed.
7.2.2 Maintenance
Only the Ormazabal customer service or specialist personnel
demonstrably trained by
Ormazabal are allowed to carry out maintenance work.
Maintenance information and maintenance instructions in the
instructions for the switching
device used in the switch panel are also to be followed.
Prior to inspection, electrically isolate and secure the operating
range in accordance with the
"safety rules" specified by DIN VDE/IEC.
Maintenance is to be performed:
• 10 years after commissioning
• 20 years after commissioning
• If found necessary during the inspection.
For details on the maintenance of
the vacuum circuit-breaker, please see the operating
instructions supplied "Vacuum
circuit-breaker Type NVL", article no. 12256860.
In case of problems during the
maintenance work and in case of
malfunctions, please contact the plant where the unit was
manufactured.
The following information is required on
contacting the manufacturer:
– Type
– Serial number
– Year of manufacture
Attention!
Note!
Note!
12264542-03 10.2012 EN
52
7.3 Cleaning
Even though the circuit-breaker panel
can be regarded as maintenance-free in
normal conditions indoors, in case of heavy soiling and aggressive air,
cleaning is to be recommended in
conjunction with the maintenance.
Before starting cleaning work all
the switchgear must be electrically isolated.
Electrical isolation is to be
ensured by a voltage test on all switch panels.
To avoid unintended operation, the supply voltage is to be shut
down.
Cleaning is performed using the
following procedure:
– Manually switch on and off circuit-
breaker (spring accumulator tension
is released, position indicator is in the OFF ("0") position.
– Move circuit-breaker to test/disconnected position.
– Switch on earthing switch
– Open switch panel door.
Wipe all parts of the switch panel using a
dry, fluff-free cloth. Insulating surfaces are to be cleaned particularly carefully to
ensure the withstand voltage is
adequate. Clean off strongly adhering soiling, e. g.
greasy soiling, using a fluff-free cloth
soaked in a household cleaning agent, then wipe off with clean water and dry.
It is not allowed to use aggressive
solvents!
Only place switch panel back in
operation in completely dry state.
7.4 Return of switch panels
The switch panels are designed to
operate for at least 30 years.
Due to the high reliability of the switch
panels, arc-faults are almost completely
excluded.
The Business Unit Medium Voltage has
been certified since 1993 in accordance with DIN EN ISO 9001 for its quality
system and since 1998 according to DIN
EN ISO 14001 for its environment management system.
As a competent partner, Ormazabal offers to return of your switch panel once
it is no longer in use. The costs involved
depend on the legal requirements applicable at the time of return.
All materials from this switchgear should
be sent for recycling.
Attention! Attention!
12264542-03 10.2012 EN
53
8 Technical data
8.1 Technical data on the circuit-breaker panels
Table 4
Rated voltage Ur [kV]
12 24 12 24
Rated frequency fr Hz 50 50 50 50
Rated short-time withstand current alternative voltage Ud kV 28 50 28 50
Rated lightning impulse voltage Up kV 75 125 75 125
Type: EA10 LS-19-75 X X
Type: EA20 LS-19-90 X X
Type: EA10 LSG-19-75 X X
Type: EA20 LSG-19-90 X X
Switchgear Vacuum circuit-breaker Earthing switch
Type: NVL2E-12/20/630-210A X
Type: NVL2E-24/16/630-230A X
Type: DES10/630-210-E1 X
Type: DES20/630-230-E1 X
Distance between pole centres mm 210 230 210 230
Rated short-circuit making current Ima kA 50 40 50 40
Rated short-time withstand current Ith 1 s kA 20 16 20 16
Rated short-circuit making current ISC kA 20 16
Rated normal current Ir 630 630
Ambient temperature T °C -5 to +40
Mean value measured over
24 h, maximum
°C +35
Relative humidity Mean value measured over
24 h, maximum
% 95
Mean value measured over
1 month, maximum
% 90
Altitude above sea level Maximum m 1000
Internal arc classification IAC AFL
20 kA, 1 s
IAC AFL
16 kA, 1 s
IAC AFL
20 kA, 1 s
IAC AFL
16 kA, 1 s
Loss of service continuity
category
LSC1
Partition class PI
Degree of protection of the external enclosure IP IP3X
Colour of the front of the switchgear (standard) RAL 7035 (light grey)
Weight, depending on optional configuration kg Approx. 350
Other devices
Current transformer In accordance with DIN 42600 part 8 (narrow mounting),
installation of max. 3 pieces
Voltage transformer In accordance with DIN 42600 part 9 (narrow mounting),
installation of max. 3 pieces
12264542-03 10.2012 EN
54
8.2 Tightening torques
Table 5
8.3 Materials
Materials used in the EA switchgear:
Table 6
8.4 Regulations and standards
The EA circuit-breaker panel complies with the requirements of the following standards and publications:
IEC 60529
IEC 61243-5IEC 62271-1
IEC 62271-100
IEC 62271-102IEC 62271-200
BlmSchV Federal Gazette 1996, part 1 no. 66 dated 20/12/1996
Thread Screw joints Welded
nominal diameter strength class 8.8 stud
M5 6 Nm -M6 10 Nm 5.9 Nm
M8 25 Nm 14.7 / -0.2 Nm
M10 49 Nm -M12 86 Nm -
Metals Steel, copper, zinc, stainless steel
Plastic materials PC, PA, EPDM, NBR, EP, POM, Q, PF/MF, PBT, GFRP
Miscellaneous Lubricants
The table values do not apply for
tightening torques specifically mentioned in the documents!
Note!
12264542-03 10.2012 EN
55
9 Accessories
Article no. 12265516 Assembly kit base fixing EA
Article no. 12262171 Assembly instructions "Panel installation for air-insulated, metal-clad switchgear Type EA"
Article no. 12256860 Operating instructions "Vacuum circuit-breaker Type NVL"
Article no. 12264549 Operating instructions „Auxiliary carriage for air-insulated, metal-clad switchgear Type EA“
Ormazabal Anlagentechnik GmbH
Am Neuerhof 31D-47804 Krefeld, Germany
Tel.: +49 2151 7151-0Fax: +49 2151 7151-75E-mail: [email protected]: www.ormazabal.de
Printed in the Federal Republic of Germany • Subject to changes without notification
