Travel :
Margin :
Switch :
0
45 max. See Fig. 3
Leave 100 mm beyond Lower Limit and
150 mm above Higher Limit for
Clearance. (See Fig. 3)
Type : Microswitch
Contact Rating : 5 Amps 240 V AC, 0.25 Amp 240V DC
Operation : See wiring diagram (Fig.5)
ROUTINE TESTS :
HOW TO ORDER :
Each indicator is tested for
1. Specified levels. 2. Switch operation 3. HV Test
4. Leakage Test.
A combined test certificate is issued for each batch.
We provide a Questionnaire for specifying your requirements.
However, a drawing is acceptable giving all specifications.
OIL LEVEL INDICATORMODEL: SO-HE-10-ATMS-MA
TERMINAL BOX WITH
COVER
ROLLER FLOAT WITH
FLOAT -ARM
SWITCH, DIAL & POINTERASSEMBLY
MAIN BODY WITH
MOUNTING FLANGE
SCHEMATICFIG. 1
FLOAT
GEAR & PINION
DRIVING
MAGNET
METALLIC WALL
DRIVEN
MAGNET
SWITCH OPERATING CAM
DIAL
MICROSWITCH
IN LIQUID IN AIR
POINTER
APPLICATION :
SCOPE :
CONSTRUCTION & WORKING :
SPECIFICATIONS :
This indicator is suitable for conservator of oil filled
transformer having Aircell (Flexi separator)
Indicator continuously reads level of oil inside the
conservator and operates a microswitch when oil
level drops down near Empty level mark.
The indicator has cast aluminium body with built-in
flange. To avoid leakage of oil and to avoid entry of
contaminated moist air in conservator, a pair of
permanent magnets is used for the operation of
indicator separated by a metallic wall. A roller type
float is used as sensor of level and it is connected to
driving magnet through a bevel gear.
Float, driving magnet and bevel gear remain in oil
inside the conservator. The driven magnet is
positioned outside in air in the housing. The driven
magnet carries a cam and a pointer. The cam is set
to operate the switch near Empty level and the
pointer is set to read the level inside the
conservator. (see schematic Fig.1)
In this model, the dial body can be separated from
the base by loosening 6 screws to have access to
the switch. This model can be mounted in inclined
0 0
position only at an angle 15 or 30 as per specific
requirement. The buyer is required to provide the
mounting flange as per Fig. 2. For this model a float
arm suitable for specified diameter of conservator is
supplied. It is not possible to supply adjustable
length type float arm for this model.
The leads from the switch are brought out in a
separate terminal box at the bottom of indicator with
a removable cover. Terminal box is provided with a
hole with 3/4” BSC threads for cable gland.
Liquid in Tank : Transformer oil.
0 0
Temp. : -30 to 120 Celsius of oil
2
Pressure : 0 to 1 kg/cm
Environment : Indoor or Outdoor
To mount the indicator, buyer has to provide
mounting pad as per Fig. 2.
Dial size : 250 mm Dia nominal.
Unit : Calibration in any unit as per
customers requirement is
possible.
Colour : Black marking on yellow
background OR black marking on
white background OR any other.
0
Spread : Max 150 (see Fig. 4 view of dial).
Material : Float - Brass,
Float arm - S.S.
Working :
Mounting :
Calibration :
Float (sensor) and arm :
SUKRUT
UK YOS RUT UD G
O NDP ONA I IA
SUKRUT
SUKRUT UDYOG9/1 A, ERANDAWANA, PUNE 411 004. (INDIA)
GENERAL NOTES :1. Indicators of different specifications are not interchangeable. Hence care should be taken while storing
Indicators and their Float with Arms with respective Sr. Nos. This indicator can be used for inclined mounting only,
2. Float & Indicator, loose or assembled, should be handled carefully as they cannot be repaired if damaged.
3. The complaint of damage or demand for spares should be very specific with respect to Sr. No. of indicator.Lot of correspondence and time can be saved just by informing Sr. No. of concerned Indicator.
4. We continuously review specifications and where appropriate, introduce modifications. We, therefore, reservethe right to change specifications in this catalogue without prior notice.
at any angle specified by buyer.
OIL LEVEL INDICATOR MODEL SO HE - 10 - ATMS - MAFIG. 2
Sr.No. Description Material.
1 Housing Cast. Al.
2 Base with Flange Cast Al.
3 Gasket (Neoprene) 6 mm thick. Rubber.
4 Mounting Pad M.S.
5 Bracket Cast Al
6 Lever with Gear Brass
7 Split Pin Brass
Sr.No. Description Material.
8 Float Arm (9.5 Pipe) S.S.
9 Bracket for Float S.S.
10 Roller Float Brass
11 Cable Gland (3/4” BSC.) Brass
12 Terminal Box with cover Cast Al.
13 Ring for Glass S.S.
Item Nos. 3, 4 & 11 are not supplied by Sukrut
PART LIST :
WIRING DIAGRAMFIG. 5
SUPPLYALARM
TERMINALS
INTERNAL WIRING
MICROSWITCH
1 2
EXTERNAL WIRING
Contact Rating : 5 Amps 240 V AC,
0.25 Amp 240 V DC
FIG. 4 VIEW OF DIAL
SUKRUT
POONA INDIA
FULL
EMPTY
3/4
035C
1/4
ANY OTHER MARKING IS POSSIBLE
Cat. No. SOHE10-ATMS-MA 0706
FIG. 3 FLOAT TRAVEL
OIL LEVEL
AT FULL
OIL LEVEL
AT EMPTY
0
45 Max
100
150
1 32 4 5
1113 12
136
rA
pp
ox
160
175
075
09.5
Pipe
110
1
Use M10 Bolts x 50 Long
with Nuts & Washer - 8 Nos.
6” NB Pipe
411
2
2
5
1
5
0
N
B
b
BOTTOM
Oil Level at Mark ‘EMPTY’
B
Hardware, Gasket & Cable Gland-Not Supplied
by ‘SUKRUT’
Mounting Pad, Gasket Not Supplied
by ‘SUKRUT’
Details at ‘B’
TOP
2
6
5
(Any other Inclination possible)
By removing these 6 screws dial body
can be separated from base unit.
76 8 9 10
1
2
1
2
0
ORIENTATION OF MOUNTING PAD FOR 30
Ph. No. : +91 20 25441514, 25441726
Fax No. : +91 20 25440231.
E-Mail : [email protected]
Website : www.sukrutudyog.com