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BAR PRIMARY CT OR RING TYPE CT  ORTOROIDAL CT

• Types (Shapes) ofCore:

Nickel iron alloy or Grain oriente !"eet !teel i! #!e $or %akin&

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• Deveop!e"# pro$ess of R%"& #ype CT

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'OND TYPE CT

Types (Shapes) ofCore:

Core i! %ae #' o$ "ot rolle !ilicon !teel !ta%'in&! or col rolle &rainnickel(iron alloy

Bot" 'ri%ary an !econary )inin&! are )o#n concentrically to re#leaka&e reactance

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'OND TYPE CT

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DIFFERENCE BET'EEN LIE TAN* CT ANDDEAD TAN* CT

INSULATOR

 

BOTTOM HOUSING / TANK

 AT EARTH POTENTIAL i.e.

DEAD TANK

 

TOP HOUSING / TANK

 AT LIVE POTENTIAL

i.e. LIVE TANK

 

CT

 W

CT CORES WITH SECONDARY

 WINDINGS ARE LOCATED

INSIDE THE LIVE TANK 

 

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CT %" S+%#$hyar,

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TERMINALMAR*INGS

OFCT:

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POLARITYTEST OF

CT:

POLARITY OFCT:

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CLASSIFICATION OF PT

PT

BASED ONAPPLICATION

BASED ONCONSTRUCTION

BASED ON COOLI

MEASURINGPT

PROTECTIVEPT

ELECTMAG* TYPE PT

CCV T

+CVT,

DRY TYP

E

OILIMME

D

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ELECTROMAGNETIC TYPE PT

Dry Ty'e +Synt"etic Re!in,Volta&e ran&e! $ro% -*- .V on)a

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ELECTROMAGNETIC TYPE PT

ELECTROMAGNETIC TYPE PT -Dry Type.

Dry Ty'e PT can /e #!e #'to 0olta&e o$ -*- .V

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ELECTROMAGNETIC TYPE PT -Dry Type E"$aps/a#e, %" (Sy"#he#%$ Res%").

ELECTROMAGNETIC TYPE PT

Dry Ty'e +Synt"etic Re!in,Volta&e Tran!$or%erran&e! $ro% -*- .V on)ar!

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ELECTROMAGNETIC TYPE PT

ELECTROMAGNETIC TYPE PT -O% F%e, Type.

Oil 1lle PT! can /e #!e #'to 22.V