Copy of Power Distribution Transformer

8/14/2019 Copy of Power Distribution Transformer

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KESC TRAINING CENTREKESC TRAINING CENTRE

Conservator

Tank

Tap-Changer

&

connectinggears

Indicator

Temperature HT11kv.Bushing &Connecting Bars

132kvEHT,ConnectingBus-Bar

Pressure

RelieveValve

Oil Cooling

Radiator

TAP

Transformer

Power DistributionTransformer

BuchholzRelay

Transformer

Yard

Bushing

coupling


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Side View of theide View of thePower Transformerower TransformerCooling Radiator Provided both sideCooling Radiator Provided both side

TransformerTransformer

On every Section the Fan are providedOn every Section the Fan are providedSetting of the FansSetting of the Fans


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BUSHING OF THEBUSHING OF THE

TRANSFORMERTRANSFORMER

11KV(LT BUSHING) OF

THE TRANSFORMERS132KV(HT BUSHING OF THE

POWER TRASFORMER)


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Buchholz RelayBuchholz Relay

Pipe to Main

Tank

Oil pipe

fromconservator

s

buchholz

Relieve

valve

Test

contact

Calibration

Oil level

glass

CONTACT

BOX

Box


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TAP-CHANGERTAP-CHANGER

Tap-Changing Mechanism

Counter Dial (Tap Number)House for

Handle

RemotePosition

Automate DC

Switch


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Tap-ChangerTap-Changer


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BREATHERBREATHER

Window to View theWindow to View the

color of thecolor of the silica gelsilica gel

Blue Color Show theBlue Color Show the

Healthiness ofHealthiness ofsilica-silica-gelgel

After moistureAfter moisture

absorption the colorabsorption the color

becomebecome PINKPINK


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11KV BUS-BAR11KV BUS-BAR

LT-BUSHINGLT-BUSHING

11KV CABLE11KV CABLE

CONNECTEDCONNECTED

WITH BUSBAR.WITH BUSBAR.

REDRED

YELLOWYELLOW

BLUEBLUE


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Oil Temperature IndicatorOil Temperature Indicator

Oil temperature indicators isOil temperature indicators isuse to monitor oiluse to monitor oiltemperature.temperature.

Usually Three Types ofUsually Three Types oftemperature indicators aretemperature indicators are

usedused

Without ContactsWithout Contacts

With two Contact First AlarmWith two Contact First Alarmand Trippingand Tripping

With 04-CONTACT 1With 04-CONTACT 1STST FanFanOff,2Off,2ndnd Fan On,3Fan On,3RDRD alarmalarm&Trip&Trip


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OIL TEMPERATURE INDICATOROIL TEMPERATURE INDICATOR

Resetting

Knob

Temperature

Of the Oil


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FORCED COOLING FANSFORCED COOLING FANS

Position of thePosition of the

forced fanforced fan

installedinstalled

Below theBelow the

RadiatorsRadiators

automationautomation

F kil l


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Frequency,power,kilovolt meterFrequency,power,kilovolt meter

Installed at the cubical of controlInstalled at the cubical of control

panelpanel


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Control panel of power transformerControl panel of power transformer


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SLECTOR (SWITCH)SLECTOR (SWITCH)

AutomateticAutomatetic

ManualManual

OffOff

ParallelParallel

IndividualIndividual


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PRESSURE RELIEF DEVICEPRESSURE RELIEF DEVICE

MR-Moving Mechanism

(TAP Transformer)

TAP Changer

Transformer Device.MAIN_TANK PRESS RELIFE

VALVE of Power Transformer


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Pressure Relief DevicePressure Relief Device

Pressure relief devicePressure relief device

is used to give a reliefis used to give a relief

to the oil pressureto the oil pressure

built up in case ofbuilt up in case ofshort circuit occursshort circuit occurs

inside theinside the

transformerstransformers

The danger ofThe danger ofexplosion or Tankexplosion or Tank

deformation exist.deformation exist.


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Hand valve between conservatorHand valve between conservator

to tap changerto tap changer

Oil Pipe of theOil Pipe of the

Conservator tankConservator tankto Main Tapto Main Tap

Hand Valve ofHand Valve ofconservator toconservator tomain TANK tomain TANK to

attain controlattain controlduring shutdown.during shutdown.


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OIL INDICATOR FOR TAPOIL INDICATOR FOR TAP

CHANGERCHANGER

Tap Changer position on top

of transformers

P

R

E

S

S

U

R

E

R

E

L

IE

V

CONTACT ON

PRESSURE

RELIEV


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Oil drain Position, of theil drain Position, of thepower-transformerower-transformerSample oilample oil

OILDRAIN- FROM TANK

CONNECTION OF

CENTEFUGING

MACHINE

TOP

MIDDLE

BOTTOM


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Surge Arrestors & CableSurge Arrestors & Cable

TerminationTermination

Surge Counter

Arraster(surge)

132kv cable

Termination

EHT Bushing

(connected to tras

B/B)


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Mounting of Bushing on theMounting of Bushing on the

transformerstransformers

EHT HOUSING

EHT Torture Short-Circuit

11kv Bushing

mounted

EHTbushing

connected

to Main

Tank


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Home Assignment for vivaHome Assignment for viva

1-How many types of relays installed1-How many types of relays installed

atat

a-Transformer b-Breaker c-Feedersa-Transformer b-Breaker c-Feeders

Signal Indication.Signal Indication.

2-Essential Parts Of2-Essential Parts Of

Power Transformer and BreakersPower Transformer and Breakers

3-Equipment Installed at Grid-station.3-Equipment Installed at Grid-station.4-Purpose & Function of equipment4-Purpose & Function of equipment

installed at EHT Grid-Station.installed at EHT Grid-Station.


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Question related TEST point of view.Question related TEST point of view.

Documents

Copy of Power Distribution Transformer