Power Distribution Transformers

Main Features

1) Magnetic circuit - Lamination CRGO M3 to M5, MOH and ZDKH type

2) Electric circuit - Electrolytic grade 99.9% pure copper

3) Dielectric circuits - Electric grade press paper, boards and mineral oil

4) Thermal circuit - ONAN through natural convection for effective cooling through axial and radial ducts

Specific Features

1) Designed for trouble-free performance

2) Design conforms to IS 2026, BS171, IEC76 and other relevant standards

3) Low power loss and low noise

4) Designed to withstand electrical impulses and thermal and dynamic stresses

5) Optimum utilization of active materials for compactness

6) Modern manufacturing techniques ensure cost effectiveness, reliability and a long trouble-free performance

Specifications

1) 3 phase, 50 Hz in voltages of 11kv, 22kv, and 33kv

2) Off-circuit tap changer to provide +5% to -10% taps in steps of 2.5%

3) Class A insulated

4) Vector group Dyn 11

5) Continuous duty

6) Copper wound as per relevant standards

7) Paintings as per IS-5 specification

8) Both HV & LV side cable boxes

Standard Fittings

1) Rating & Diagram plate

2) Earthing terminals

3) Lifting lugs

4) Thermometer pocket

5) Off-circuit tap switch

6) Air release hole with plug

7) Oil conservation with drain plug

8) Pressure relief valve

9) Jacking lugs

10) Inspection cover

11) Oil level indicator

12) Drain-cum-bottom-filter valve

13) Top-filter valve with plug

14) Uni-directional rollers

15) Silica gel breather

16) Cooling radiators

Optional Accessories on request

1) Bucholtz relay with alarm and trip contact

2) Oil temperature indicator with alarm and trip contact

3) Winding temperature indicator with alarm and trip contact

4) Magnetic oil level gauge with alarm contact

5) Marshalling box to house O.T.I. and W.T.T.

6) Neutral C.T

7) Shut-off valves