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Current Transformer (low voltage)PDF

GENERAL 
Current Transformer is used to transform the high AC current to small easily manageable values. They're connected with the Panel Meter or Relay and they can help to measure the current or protect the equipments. Low voltage current transformers are manufactured as of two types for measuring CT and protection CT. 


MEASURING CT 

Measuring current transformers are constructed to feed on other low voltage apparatus such as measuring instruments, relays, watt-hour meters (kW meter) and these type of current transformers are mainly used 0.5 and 1 class to transfer the current from highest rated current to rated secondary current.


PROTECTION CT 

Protection current transformers are constructed to feed the protection relay. These type of current transformer are mainly used 5P. (Customer supplied when required.) 


REFERENCE STANDARDS 

IEC60044-1, VDE0414-44-1, DINS7414, B53938, 8s7626, EN60044-1.


TEST VOLTAGE 
3kV AC (per min.) 


FREQUENCY 

50/60Hz 


OPERATING TEMPERATURE 

- 25-C-+50-C 


ACCURACY 

Measuring 0.5; 1.0; 3.0 (Special accuracy upon request) 


BURDEN 
Ranging from 1.5-30VA 


RATED SECONDARY CURRENT 
5A (1A upon request) 


RATED PRIMARY CURRENT 
Up to 6000A 


INSULATION 
Class B for Casing type CT 
Class A for Taping type CT 


CASING 
Non-flammable, polycarbonate self extinguishing ABS/PC 


TERMINAL MARKS 
VO to UL94 
Primary Pl & P2(K & L) 
Secondary SI & S2(K & L) 

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