Transformer Substations - Freesadky.ismail.free.fr/electrar/cours/postesHTBT/pdf/ormazabal.pdf · The PFU Transformer Substations consist of a concrete monoblock-structure enclosure

Transformer Substations

Prefabricated TransformersSubstationsUp to 36 kV

Index Transformer Substations

3PFU House-Type Monoblock Transformer Substations

PF House-Type Modular Transformer Substations 10

MINIBLOK Outdoor Packaged Substation 15

ORMABAT End-of-line Packaged Substation 21

MB Frame-mounted Packaged Substation 23

PF-15 Switching Substation 22

MINISUB Underground Packaged Substation 18

ORMASET Half-buried Packaged Substations 14

PFS Underground Monoblock Transformer Substations 8

2

As a result of the constant development of standards and newdesigns, the characteristics of the items shown in this cataloguemay be changed without prior notice.

Characteristics and availability of materials must be confirmedby our Technical-Commercial department.

The quality of the products designed, manufactured andinstalled by Ormazabal is guaranteed by the implementationand certification of a quality assurance system that conformsto the ISO 9001 international standard.

Our company’s commitment to the environment protection isasserted by the implementation and certification of anenvironmental management system that conforms to the ISO14001 international standard.

The PFU Transformer Substations consist of a concrete monoblock-structure enclosure that houses all electrical switchgear fromMV switchgear to LV switchboards, including transformers,control devices and interconnecting equipment for the variouselements.

The main advantage of these Transformer Substations is thefact that both the construction, assembly and built-in equipmentcan be entirely factory-built, thus ensuring uniform quality andsignificantly minimising any on-site construction and assemblywork. In addition, the careful design of the substations allowsthe substations to be installed in both industrial and urbanenvironments.

OVERVIEW

PFU Transformer Substations allow typical power supplyarrangements consisting of up to 2 transformers with a maximumunit power of 1000 kVA(1) to be installed.

FIELD OF APPLICATION INSTALLATION

PFU-5 with 2 transformers,1000 kVA each

The installation of PFU substations is simple, since “on-site”operations can be reduced to positioning on the trench andconnecting the supply service cables, which are threaded intothe substation through knockout holes located on the bottom.

3

Transformer SubstationsPFU House-Type Monoblock TransformerSubstations

(1) For further conditions, please contact our Technical/Commercial department.

PFU-3 with 1 transformer

Access to the Transformer Substation is possible through a frontdoor, which enables access to the equipment compartment thataccomodates MV panels, LV panels and control devices of thesubstation. If operating conditions so require, a second accessdoor for personnel can be added and a physical separationbetween the utility company and customer panels can be created.

Each transformer is provided with its own door so it can beremoved from the substation or accessed for maintenancepurposses.

TECHNICALREGULATIONS/STANDARDS

IEC 61330, RU 1303AIEC 60298, RU 6407B

UNE 21428-1, HD 428, RU 5201DUNE 21538, HD 538IEC 60439-1, RU 6302B

OPERATION

PFU-5 with 1 transformer and PFU-4 substation

The substations have a reinforced vibrated concrete enclosureconsisting of two sections: one that comprises the bottom platesand side walls which include doors and natural ventilationgrilles and another one that forms the ceiling.

All concrete steel reinforcements are connected to each otheras well as to the earth bus, as specified in RU 1303. In addition,the doors and grilles feature a 10 kΩ resistance to the earthingconnection of the enclosure.

The standard finish of the substation is a rough acrylic paint(white for walls and brown for ceilings, doors and grilles).

CONSTRUCTION CHARACTERISTICS

4

CGM switchgear panels inside a PFU substation

PFU House-Type Monoblock Transformer Substations

SUBSTATIONS UP TO 36 kVPFU-3 PFU-4 PFU-5

Lenght [mm]Width [mm]Height [mm]Area [m2]Visible Height [mm]

Lenght [mm]Width [mm]Height [mm]Area [m2]

Lenght [mm]Width [mm]Depth [mm]

Weight [kg]

328023803240

7,82780

310022002550

6,8

40803180560

11000

44602380324010,7

2780

428022002550

9,4

52603180

560

12500

60802380324014,5

2780

59002200255013,0

68803180

560

18000

Outsidedimensions

Insidedimensions

Diggingdimensions

NOTE: Access door dimensions: 900/1100 x 2100 mmTransformer door dimensions: 1260 x 2100/2400

5


SUBSTATIONS UP TO 24 kVPFU-3 PFU-4 PFU-5




Weight [kg]

328023803045

7,82585

310022002355

6,8

40803180

560

10500

44602380304510,7

2585

428022002355

9,4

52603180

560

12000

60802380304514,52585

59002200235513,0

68803180560

17000

Outsidedimensions

Insidedimensions

Trenchdimensions

For transformers rated above630 kVA, additional ventilationgrilles are mounted on the sidewall.

6

PFU-31 transformer

PFU-4without transformer

PFU-3without a transformer

3280

100

460

Visi

ble

Hei

ght

2380

Rear View

Levelling Sand

3100

MV Panels

2200

32802380

Rear View

Levelling Sand

3100

MV Panels

2200Transfo.

LV switchboards

100

460

Visi

ble

Hei

ght

Rear View

Levelling Sand

4480

4280

MV Panels

2200

2380

100

460

Visi

ble

Hei

ght

PFU House-Type Monoblock Transformer Substations

PFU-41 transformer

PFU-51 transformer2 access doors

For transformersrated above 630kVA, additionalventilation grillesare mounted onthe side wall.


7


PFU-52 transformers


4480 100

460

Visi

ble

Hei

ght

2380

Rear View

Levelling Sand

4280

MV Panels

2200Transfo.

LV switchboards

Rear View

Levelling Sand

6080

5900

MV Panels

2200

100

460

Visi

ble

Hei

ght

2380

Tranfo. Transfo.

LV switchboards

6080

100

460

Visi

ble

Hei

ght

2380

Rear View

Levelling Sand

5900

MV Panels

2200Transfo.

LV switchboards

8

PFS Transformer Substations feature a monoblock structure andhave been designed for underground installation and can housedifferent electrical power distribution arrangements, makingthem suitable for public distribution and private installationload-centre substations.

The underground installation and the easy adaptation of thesubstation area minimise any environmental impact.

Depending on the ventilation system, two different versions areavailable: PFS-V (vertical grille ventilation, protruding) andPFS-H (horizontal grille ventilation, non-protruding)

PFS Underground Monoblock Transformers Substations up to 2 Transformers

OVERVIEW

PFS Transformer Substations can be used for electrical powerdistribution up to 36 kV, including a transformer with amaximum power of 1000 kVA or 2 transformers of maximunpower of 630 kVA(1).

FIELD OF APPLICATIONINSTALLATION

PFS-V exterior view of 1 Transformer.


IEC 61330, RU 1303AIEC 60298, RU 6407BUNE 21428-1, HD 428, RU 5201DUNE 21538, HD 538IEC 60439-1, RU 6302B

PFS-H exterior view

Installation consists mainly in bringing the packaged substationto the trench, positioning it on a compacted sand layer andconcrete slab, and then connecting the supply service andearth conductors, since switchgear assembly can be performedat the factory. All this reduces “on-site” operations to oneworking day, thus minimising costs and ensuring uniformquality for all substations.

PFS Substations have been designed for installation in gardensand on the sideways (even for those not protected fromoccasional access by vehicles, in accordance with the Instructionrelated to actions to be considered for road bridge projects)and substation finishing can be performed at the factory oron-site by means of gravel, floor tiles, etc.

On-site handing

PFS

29003700

Concrete Slaband Sand Layer

Earth Conductor

5580 - 70006380 - 7800 AA

200+

50 3040

PFS-2T

AA


Personnel can access the substation through an opening of1300 x 700 mm located on the ceiling. This entrance is coveredby a balanced cover plate such that it can be opened by asingle operator. It also deploys a metal peripheral protectionaround the access opening. The operator can descend into theload-centre substation using a step ladder, with a tilting angleunder 68°. The switching gangway is far from the access area,thus avoiding rainfall on the corridor.

The transformers access covers plates feature an opening of2100 x 1270 mm, and are equipped with four tapped insertson the outside for handling. The transformers inside the substationare separated by means of a plate and placed over the oilcollecting pit.

Materials and tools can be entered through specific cover thathas also four inserts on the outside for handling.

9


OPERATION

The substation features an extra-sturdy monoblock structureand is made of vibrated concrete and electrically welded steelreinforcements joined to the earth bus of the Transformer Substation.

Due to an impermeable concrete surface which is resistant to thepresence of sulphate on the ground, as well as the existence ofwatertight joints on the cable side entries as well as on the uppercover plates, the substation can be installed on grounds with ahigh ground-water level, even in areas with a high flood risk.

CONSTRUCTION DATA

TECHNICAL DATAPFS-H PFS-V

Lenght [mm]Width [mm]Height (depth) [mm]Visible height [mm]Maximum weight [kg]

6.1802.4602.790

025.000

5.1402.4602.790

610/82024.000

View of a PFS-V substation withthe personnel access cover opened

CGM 36 kV panels inside a PFS

PFS-H PFS-V

7.6003.0002.790

029.000

6.5602.4602.790

61026.400

1 Transformer 2 Transformers

PF Transformer Substations consist of different prefabricatedconcrete elements that are assembled on-site to create a buildingthat houses all electric switchgear: from the MV switchgear tothe low-voltage switchboards, including transformers, controldevices and interconnecting means for the different elements.

The modular structure allows Transformer Substations to beeasily transported for installation in hard-to-access areas andpermit any arrangement of the Transformer Substation to be

implemented, including the number of access doors andtransformers required for each application.Prefabrication of all elements used for building the substationsand Ormazabal’s Quality System ensures uniform quality inall Transformer Substations.

UTILIZACIÓN

OVERVIEW

PF Transformer Substations allow any electrical power supplyarrangement, with a maximum transformer unit power of1000 kV(1).

FIELD OF APPLICATION INSTALLATION

PF-204 with 2 transformers


IEC 61330, RU 1303AIEC 60298, RU 6407BUNE 21428-1, HD 428, RU 5201DUNE 21538, HD 538IEC 60439-1, RU 6302B

PF-203 with 2 transformers and PF-201 for metering

(1) For higher power values, please contact our Technical/Commercial department.

PF Substation installation is limited to on-site assembly of allprefabricated elements as well as inclusion of electricalcomponents, and finally connection of the supply service cablesthat enter the substations through knockout holes located onthe bottom of the side wall.

10

OPERATION

Access to the Transformer Substation is possible through a frontdoor that allows direct access to the equipment compartmentthat houses the medium-voltage panels, the low-voltageswitchboards and the control elements of the substations. Ifoperation conditions so require, a second access door forpersonnel can be added and a physical separation betweenthe utility company and customer panels can be created.

Each transformer has its own door so the transformer can beremoved from the substation or accessed for maintenancepurposses.

PF House Type Modular

11

The enclosure panels are made of vibrated reinforced concrete,with the concrete steel reinforcements joined to each other andto the earth bus as specified in RU 1303. In addition, the doorsand grilles feature a 10 kΩ resistance to the earthing connectionof the enclosure.

A standard polyurethane finish has been used for the substation(white for walls and brown for ceiling, doors and grilles).

CONSTRUCTION DATA

PF-200 SUBSTATIONS UP TO 24 kV

PF-201 PF-202 PF-203




Weight [kg]

262025203195

6,62595

246023602285

5,8

34203420700

10200

48802620319512,82595

47202460228511,6

56803420700

17100

72402620319519,0

2595

70802460228517,4

80403420700

24200

Outsidedimensions

Insidedimensions

Trenchdimensions

PF-204

96002620319525,22595

94402460228523,2

104003420700

30850

PF-300 SUBSTATIONS UP TO 36 kV




Weight [kg]

Outsidedimensions

Insidedimensions

Trenchdimensions

262025203600

6,63000

246023602700

5,8

34203420700

11000

48802620360012,8

3000

47202460270011,6

56803420700

18500

72402620360019,03000

70802460270017,4

80403420700

25800

96002620360025,23000

94402460270023,2

104003420700

32900

PF-304PF-303PF-302PF-301

NOTES: Access door dimensions: 900 x 2100 (24 kV) / 900 x 2400 (36 kV). Transformer door dimensions: 1260 x 2100 (24 kV) / 1260 x 2400 (36 kV).


12

PF House-Type Modular Transformer Substations

For transformers rated above630 kVA, additionalventilation grilles are mountedon the side wall.


Rear view

Levelling sand

4880

MV panels

2460

4720

100

600

Visi

ble

heig

ht

2620Transfo.

LV switchboards

2460

2620

MV panels

2360Transfo.

LV switchboards100

600 25

20

100

600

Visi

ble

Hei

ght Rear view

Levelling Sand

2620

2360

2460

2520

PF-201 / 301without a transformer

PF-202/3021 transformer


Visi

ble

Hei

ght Rear view

Levelling Sand

MV panels

LV switchboardsTransfo.Transfo.

MV panels

LV switchboardsTransfo.


PF-203/3032 transformers

PF-204/3042 transformers




13

100

600

Visi

ble

heig

ht

7080

Rear view

Levelling sand

7240

MV panels

2460Transfo.

LV switchboards 2620

100

600

70807240

2620

2460

94409600

2460

100

600

2620

Visi

ble

heig

ht Rear view

Levelling sand

Transfo.

Visi

ble

heig

ht Rear view

Levelling sand


3475 2070

1660

1500

850

100

1660

2350

MV

pan

els

LV switchboards

Transfo.

Weight: 7.200 kg (without a transformer)

ORMASET Half-buried Packaged Transformer Substations

OVERVIEW

The ORMASET is a packaged Transformer Substation that hasbeen designed for half-buried installation, incorporating MVswitchgear with SF6 as insulation and interrupting medium(CGM/CGC), a transformer, a LV switchboard as well asinterconnecting and auxiliary devices.

Its careful outdoor design, compact size and half-buriedinstallation (visible height 1.5 m) reduces the substation visualimpact, making it suitable for both industrial and residentialareas.

ORMASET (view of LV switchboard access doors)

View of the CGM paneland the LV switchboardaccess doors in aORMASET

FIELD OF APPLICATION

IEC 61330, RU 1303AIEC 60298, RU 6407BUNE 21428-1, HD 428, RU 5201D


Prefabrication of the Substitions allows full equipment assemblyat the factory, such that “on-site” operations can be limited tofinal positioning of the building on the trench, as shown in thefigures, and connection of electrical service supply cables.

INSTALLATION

The MV switchgear and the LV switchboard can be accessedfrom outside through independent doors, thus making operationseasy.

OPERATION

14

The ORMASET Transformer Substation allows electrical powersupply arrangements with a transformer up to 1000 kVA(1), at24 and 36 kV, to be implemented, where the maximumconfigurations are:

24 kV 3L + 1P (3 feeder protection panels and one fusedprotection panel).36 kV 2L + 1P (2 feeder protection panels and one fusedprotection panel).

Level “0”

(1) at the transformer, pluggable terminals are used.

MINIBLOK Outdoor PackagedTransformer Substation

The MINIBLOK is a compartmentalised packaged TransformerSubstation, with operation from the outside that has beendesigned by Ormazabal for use in public MV distributionnetworks.

Basically it consists of a compact prefabricated concrete enclosurethat houses the CGC system MV compact switchgear, atransformer, a LV switchboard and the respective interconnectingand auxiliary devices. The substation is shipped fully factory-assembled to ensure a uniform, high-quality finish.

The conceptual design of these substations, which keeps allcomponents separate from each another, limits the use ofcombustible insulating liquids and makes replacement of anycomponent easy.

Additionally, the use of SF6 total-insulation MV voltage switchgearreduces maintenance needs and gives excellent characteristicsin terms of resistance to pollution and other environmentalfactors, including resistance to possible flooding of the TransformerSubstation.

Finally, the optimised ventilation provided in this building reducestransformer overheating, and allows maximum use and optimaloperating conditions to be achieved.

OVERVIEW

The MINIBLOK can be integrated in distribution networks up to24 kV, where a 250, 400 or 630 kVA(1) transformer is required.

The electrical diagram that is available in medium voltage hastwo feeder protection panels (incoming and outgoing feeder)and a fuse-switch panel for operation and protection of thetransformer as well as a LV switchboard with fused outgoingcables.

Its compact size makes the substation an appropriate solutionwhen limited space is available. Also, its low visible heightenables a reduction of visual impact.


Outside view of a MINIBLOK

(1) For higher power output values, please contact our Technical-Commercial department.

15

THERMOSTAT

TRIPPINGLIGHTING


MINIBLOK Outdoor Packaged Transformer Substation

OPERATION

MV or LV switching operations as well as replacing MV or LVfuses are performed by opening the packaged substation doors,with access inside the substation not being necessary.

There are two safe opening positions: at 90° and 180°.

16

Maximum weight: 7.500 kg (630 kVA)

2240 15

40

21002100

800

100

4300

Leveling sand

Surroundingsideway area

4300

Installation of a MINIBLOK requires digging a trench of thedimensions shown in the figure. The trench foundation shouldbe levelled by a compacted sand layer on which the packagedsubstation will be placed.

Installation operations consist of positioning the packagedsubstation on the dug trench and connecting the MV and LVcables and the outside earthing network. The knockout holesprovided on the enclosure should be drilled so this can be done.

After bringing these cables in, the cable service entrancesshould be sealed to prevent water from entering the substation,before the trench is covered.

INSTALLATION

MV and LV switchgear in a MINIBLOK

17

CONSTRUCTION CHARACTERISTICS AND TECHNICAL SPECIFICATIONS

24kV

50kV125 [kV]peak

IP 23DIK 1010K

400 A200 A16/20 kA20 kA

250, 400 or 630 kA420 VDyn114%

440 V630 or 1000 A160, 400 or 630 A

IEC 61330, RU 1303A

IEC 60298, IEC 60298, RU 6407B

UNE 21428-1, IEC 60076, HD 428, RU 5201D

IEC 60439

GeneralRated voltageInsulation level

At power frequencyAt lightning impulse

Prefabricated enclosureRated protectionImpact resistanceClass

MV panelsRated busbar currentRated transformer-off currentRated short-time current (3 s)Switch-fuse combination breaking capacity

TransformerPowerNo-load secondary voltageVector groupShort-circuit voltage

LV SwitchboardRated voltageRated currentRated current at outputs


MINISUB is a compact packaged Transformer Substation thathas been designed by Ormazabal to be used for public MVdistribution networks. The substation has been designed forunderground installation.

Inside the compact concrete enclosure, the CGC system MVpanels, the transformer and the LV switchboard, as well as theinterconnecting elements between these elements and the restof accessories, are installed at the factory.

Two versions are available: MINISUB-H, in which the ventilationgrilles are located on a horizontal plane, where stepping ispossible without any restrictions, and the MINISUB-V, whichhas ventilation grilles located in appropriate small ventilationtowers that have been designed to be integrated with all othertypical elements of sideways or parks and gardens.

The construction of the foundation and walls that form a singleconcrete part prevents water from filtering from the underground.

This feature, together with the use of gaskets on the upper coverplate and the access door, prevents water from entering theTransformer Substation. The design of the ventilation grilles inthe MINISUB-V model prevents rainfall and even surface waterfrom entering the enclosure until it reaches an approximateheight of 200 mm. In the MINISUB-H model, manholes areavailable that can be coupled to the general rain water sewerto remove water that enters through the grilles, thus preventingit from entering the Transformer Substation.

In addition, the use of SF6 total insulation MV switchgear in theCGC system reduces maintenance needs and provides the unitwith excellent characteristics in terms of resistance to pollutionand other environmental factors, including possible flooding ofthe Transformer Substation.

The compartmentalization of these MINISUB Substations keepsall components separate from each other, making componentreplacement easy.

OVERVIEW

MINISUB is applicable to electrical power distribution networksof up to 24 kV, where one transformer of 250, 400 or 630 kVAis required. The available MV electrical diagram has two feeder(incoming and outgoing) protection panels and a fuse-switchpanel for operation and protection of the transformer as wellas a LV switchboard with fused outgoing cables.

Its underground installation makes it the ideal solution whenone of the installation goals is the use of floor space as a transitarea or the minimisation of visual impact.


18

MINISUB Underground Packaged Transformer Substation

Outside view of a MINISUB-V

THERMOSTAT

TRIPPING LIGHTNING

UTILIZACIÓN

Installation of the MINISUB requires previous digging of atrench with the dimensions shown in the figure with concretefoundation. Levelling is performed by means of a compactedsand layer on which the packaged substation is placed.

Installation is limited to simply positioning the TransformerSubstation in the trench and connecting outside earthing linksand MV and LV cables. This operation is performed throughknockout holes provided on the concrete enclosure. Thoseknockout holes are provided with gaskets that seal the inletonce cables have been connected (also connection to the rainwater sewer must be performed, if that option has been chosen).

INSTALLATION

19

OPERATIONMV or LV switching operations as well asMV or LV fuse replacement and transformerregulator operation is done after accessingthe space provided for the operator (afterdescending the step ladder available forthat purpose). When the the operator coverplate is opened, a peripheral protectionthat fully surrounds the opening and allowsaccess to the inside of the MINISUB isautomatically deployed.

2270

2470

1000

3460

3800

400

1740

2000

2460

150+

50

Con

cret

e sla

b +

leve

lling

san

d

540

1920

2700

680 2100 680

Operatoraccesscover plate

Maximum weight:13.500 kg (630 kVA)

2270

2470

1000

4500

3800

1740

2000

2460

150+

50

Con

cret

e sla

b +

leve

lling

san

d 2700

Operatoraccesscover plate

Maximum weight:16.500 kg (630 kVA)

MINISUB-V


MINISUB-H

20


24kV

50kV125 [kV]peak

IP 23DIK 1010K

400 A200 A16/20 kA20 kA

250, 400 or 630 kA420 VDyn114%

440 V630 or 1000 A160, 400 or 630 A

IEC 61330, RU 1303A

IEC 60298, RU 6407B

UNE 21428-1, IEC 60076, HD 428, RU 5201D

IEC 60439-1



Prefabricated enclosureRated protectionImpact resistanceClass




MINISUB Underground Packaged Transformer Substation

21

The ORMABAT is a packaged, monoblock-structure TransformerSubstation that has been designed for ground installation. Thesubstation can be equipped with MV switchgear, with SF6 asinsulation and interrupting medium (CGM), the transformerand interconnecting and auxiliary devices.

The basic model contains a fuse-switch panel(1) for transformerprotection that is operated from outside.

The Substation features easy installation, compact dimensionsand low-weight and recyclable components,allowing it to beused for both permanent and temporary applications.

OVERVIEW

The ORMABAT Transformer Substation can be used witha transformer up to 160 kVA(1) at 24 kV.


Prefabrication of these substations allows fullequipment assembly at the factory such thatinstallation operations are limited to positioning thesubstation in the trench and connecting the supplyservice cables.

INSTALLATION

IEC 60298, RU 6407BUNE 21428-1, HD 428, RU 5201D


Opening the Transformer Substation doors enablesaccessing the switchgear and the transformer fromoutside in order to perform switching andmaintenance operations.

OPERATION

Weight: 2.800 kg


2100 1450

2045

235

ORMABAT

Transformer SubstationsORMABAT End-of-line PackagedTransformer Substation

OVERVIEWThe PF-15 is an MV Switching Substation, featuring a monoblockstructure and designed for ground installation.

The PF-15 standard configuration contains three load interrupterswitches(1) for 24 kV, with SF6 as insulation and interruptingmedium (CGM), that are operated from outside.

The substation features easy installation, compact dimensions,low-weight and recyclable components which allow its use bothfor permanent and temporary applications.

PF-15 Switching Substation

The PF-15 switching station can be used up to 24 kV(1).


IEC 60298, RU 6407B


Prefabrication of the substation allows full equipment assemblyat the factory such that “on-site” operations are limited topositioning the substation and connecting the supply servicecables.

INSTALLATION

Opening the two-leaf door of the switching substation allowsaccess of the switchgear from the outside to perform switchingand maintenance operations.

OPERATION

Weight: 2.400 kg

(1) For further conditions or configurations, please contact our Technical/Commercial department.

22

1460

1360

1215

1070

550

1500

100

PF-15 with access from public roads

The MB (Basic Module) is a compact, compartmentalisedTransformer Substation that has been designed to be installedfor public MV electrical power distribution networks inTransformer Substation rooms that are inside buildings usedfor other purposes.

It basically consists of compact MV switchgear from the CGCsystem, one transformer, one LV switchboard and the respectiveinterconnecting and auxiliary elements. All elements are factory-built and supplied with a standalone frame equipped withwheels for transportation to ensure a uniform, high-qualityfinish.

MB Frame-mounted PackagedTransformer Substation

OVERVIEW


23

1650 1540

1830

1220

1400

1500

Approximate weight: 2.100 kg (630 kVA)

The MB can be integrated in electrical power distributionnetworks of up to 24 kV, where a 250, 400 or 630 kVAtransformer is required.

The MV electrical diagram includes two (incoming and outgoing)feeder panels and a fuse-switch panel for transformer switchingand protection as well as one LV switchboard with fusedoutgoing circuits.

The compact size and easy installation of the substations makethem ideal when available space is limited or when an oldTransformer Substation is to be replaced and upgrading effortsshould be minimised.


The installation of an MB consists basically of installing theassembly in the room, an operation that is made easy by thewheels available and the rear connection of MV and LV andearthing network connections.

The building that houses the assembly should have adequateventilation for the transformer power output and constructioncharacteristics of the site.

INSTALLATION


24kV

50kV125 [kV]peak

400 A200 A16/20 kA20 kA

250, 400 or 630 kA420 VDyn114%

440 V630 or 1000 A160, 400 or 630 A

IEC 60298, RU 6407B

UNE 21428-1, IEC 60076, HD 428, RU 5201D

IEC 60439-1






MB Frame-mounted Packaged Transformer Substation

24

THERMOSTAT

TRIPPINGLIGHTNING

TECHNICAL/COMMERCIAL DEPARTMENT (INTERNATIONAL)Tel: +34 94 630 51 03Fax +34 94 630 51 04e-mail: [email protected]

www.ormazabal.com

CA·101·GB·0209


Prefabricated Transformer Substations up to 36 kVTransformer Substations for Wind Farms up to 36 kV (CA·105)

Medium Voltage Switchgear for Secondary Distribution Networks

CGM System (CA·102)

CGMCOSMOS System (CA·100)

Medium Voltage Switchgear for Primary Distribution Networks

Power Switchgear Panels (CA·104)

Protection, Control, Automation and Telecommand

Protection and Control (CA·103)

Automation and Telecommand (CA·106)

MV/LV Power Transformers

Low Voltage Switchgears

Documents

Transformer Substations - Freesadky.ismail.free.fr/electrar/cours/postesHTBT/pdf/ormazabal.pdf · The PFU Transformer Substations consist of a concrete monoblock-structure enclosure