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Power Distribution Transformer


Power Distribution Transformer


We are engaged in manufacturing Power Distribution Transformer to meet the present-day needs of effective power distribution in various establishments. We have installed facility to manufacture Oil-filled Power and Distribution Transformers up to 10 MVA, 66 KV Class. The tested range of Power Distribution Transformers can also be customized to meet the requirements of individual, Industrial, commercial, co-generation and utility services. The Power Distribution Transformers can be provided with a variety of terminations to meet individual requirements for new installation, replacement etc.

 

Applications :

  • Industrial Purpose

  • Electricity Board

  • Domestic and Consumer Transformers

  • Wind Mill Power transmission

 

Standard Fitting :

  • Monogram plate.

  • Rating & diagram plate .

  • Earthing terminals – 2 Nos.

  • Lifting lugs for complete transformer.

  • Thermometer pocket.

  • Air release hole with plug.

  • Oil filling hole with plug on conservator.

  • Oil conservator with drain plug.

  • Dehydrating breather (1 No.) sillicagel type with oil seal & connecting pipe.

  • Prismatic oil level indicator – 1 No.

  • Drain valve with plug – 1 No.

  • Drain cum bottom filter valve with plug.

  • Inspection cover.

  • Externally operated off circuit tap changing switch.

  • Jacking lugs.

  • Under base with flat bi-directional treaded rollers.

  • Radiators.

  • Pressure relief valve without electrical contacts.

  • Filter valve with plug.

  • Sampling valve.

  • LV additional neutral- out door bushing – 1 No.

  • H.V.TERMINALS – BARE BUSHING.

  • L.V.TERMINALS - CABLE BOX.

  • Buchholz relay.

  • Magnetic oil level gauge with low oil level alarm contacts

  • Oil temperature indicator with electrical contacts for alarm and trip .

  • Winding temperature indicator with electrical contacts for alarm and trip.

  • Marshaling box.



Specifications

PARAMETERS

MFG. Detail

 

IS: 2026, IEC – 76 & 726.

Name of manufacturer

PEC

Service

OUT DOOR /INDDOR

Capacity

UP TO 10 MVA

Rated NO LOAD Voltage Ratio

HV Winding

UPTO 66 KV

LV Winding

433/3300/11000

Rated frequency

50/60 Hz.

No. of phases

THREE

Type of Cooling

ONAN

Type of Vector Group

Dyn 11

TAP Changer

OCTC /OLTC

A

Tapping Range

+10% to –10% @ 1.25%

B

Number of steps

16 steps 17 Position

C

Type of TAP Changer

OLTC ( RTCC & AVR)

TEMPERATURE RISE

Top Oil

50

Winding

55

Winding Material

COPPER

Laminations

Thickness Less than 0.27 mm ( M3 /M4 Grade )

Terminal Arrangement

High Voltage

Cable Box

Bare Bush

Low Voltage

Cable Box

Bus Bar

Mounting status

uni - directional wheels

Provision of Air release Plug

YES

Provision of Bottom Drain cum Filter Valve

YES

Provision of Conservator tank with Oil filling holes & Drain Plug

YES

Provision of Explosion vent with double diaphragm

YES

Provision of Lifting & Jacking Lugs

YES

Provision of Marshaling Box

YES

Provision of Rating & Diaphragm Plate

YES

Provision of Terminal Marking Plate

YES

Provision of Thermometer Pocket

YES

Provision of Top Filter valve

YES

Qty. of Earthing Terminal

TWO POINTS

Specification for Bucholz Relay (Alarm & Trip. Contacts)

YES

Supply of Oil Temp. Indicator (Alarm & Trip Contacts)

YES

Supply of Winding Temp. Indicator (Alarm & Trip Contacts)

YES

Specification for Transformer Tank

Top ,Bottom 6 side 4 mm

Specification for Paint

Polyurethane Paint shade 631

Specification of Silica gel Breather

 As per IS.

Overheating

60/65°C

Maxi Altitude

4000 m

Grade of Oil

As Per I.S. 335.


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