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Open type protection current transformer

Open type protection current transformer
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Open type protection current transformer

Low-voltage protective current transformers are mainly used in relay protection circuits where multiple busbars pass through. The products are developed for the protection system to detect short-circuit faults. With different accuracy levels and accuracy limit coefficients, they can be extended to different perforation sizes, and are widely used in low-voltage distribution protection systems.

Type

Rated current ratio(A)

Precision degree

Rated load,VA

 

P-K-120×60

 

300-400/5(1)A

5P10

2.5


400/5(1)A


2.5


500/5(1)A


3.75


600-800/5(1)A


5.0


1000-1250/5(1)A


7.5


1500-1600/5(1)A


10


2000-3000/5(1)A


15

P-K-160×80

 

500-800/5(1)A


2.5


1000-1500/5(1)A


5.0


2000/5(1)A


10


2500-3000/5(1)A


15


4000-5000/1A


20

P-K-200×80

500-800/5(1)A


2.5

 1000-1500/5(1)A


5.0

 2000/5(1)A


10

 2500-3000/5(1)A


15

 4000-5000/5(1)A


20


Typical connection of Open type protection current transformer


Technical parameter of Open type protection current transformer

Type

Rated current ratio(A)

Precision degree

Rated load,VA

 

P-K-120×60

 

300-400/51A

5P10

2.5


400/51A


2.5


500/51A


3.75


600-800/51A


5.0


1000-1250/51A


7.5


1500-1600/51A


10


2000-3000/51A


15

P-K-160×80

 

500-800/51A


2.5


1000-1500/51A


5.0


2000/51A


10


2500-3000/51A


15


4000-5000/1A


20

P-K-200×80

500-800/51A


2.5

 1000-1500/51A


5.0

 2000/51A


10

 2500-3000/51A


15

 4000-5000/51A


20


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