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 : sukrut@pn2.vsnl.net.in

Website : www.sukrutudyog.com