BH-0.66 IIP Current Transformer

BH-0.66 IIP current transformers are plastic encased which are designed for big burden requirements and also for protection class, such as 5P10, 5P20, 10P10, 10P20. These plastic cases are much bigger than the regular ones. This series can be produced as protective current transformers and as well as instrument transformers. The CTs can be directly installed onto copper busbar up to 720VAC rating.

Technical Parameters:

Seriesprotection CT
Item Number BH-0.66 IIP protection
Rated Primary Current 100A to 6300A
Rated Secondary Current 5A, 1A
Rated Load 2.5/5/10/15VA
Accuracy Class 1.0, 0.5, 0.2, 0.5S, 0.2S,5P10,5P20,10P10,10P20
Rated voltage AC 0.66kV
Rated Frequency 50/60Hz
Casing Material PC
Installation busbar or floor mounting
Operating Temperature -40℃ to +50℃
Altitude ≤ 3000m
Power Frequency Voltage Endurance 3000V/1min
Operating humidity ≤ 80%
Function measurement of current and power; relay protection

Product Parameters:

ModelRatioHole DimensionsRated Burden Accuracy Class
JLK2-0.66 30x20II100/5A~400/5A30x20mm2.5~5VA3.0, 1.0
JLK2-0.66 60x40II250/5A~1200/5A60x40mm2.5~10VA1.0, 0.5
JLK2-0.66 80x50II250/5A~1500/5A80x50mm5~10VA3.0, 1.0, 0.5
JLK2-0.66 100x50II500/5A~3200/5A100x50mm5~20VA1.0, 0.5
JLK2-0.66 120x60II500/5A~1500/5A120x60mm5~10VA1.0, 0.5
JLK2-0.66 140x60II1000/5A~6300/5A140x60mm10~20VA1.0, 0.5
JLK2-0.66 160x80II1000/5A~6300/5A160x80mm10~20VA1.0, 0.5
JLK2-0.66 80x50II250/1A~1500/1A80x50mm5~10VA3.0, 1.0, 0.5
JLK2-0.66 100x50II500/1A~3200/1A100x50mm5~20VA1.0, 0.5
JLK2-0.66 120x60II500/1A~1500/1A120x60mm5~10VA1.0, 0.5
JLK2-0.66 140x60II1000/1A~6300/1A140x60mm10~20VA1.0, 0.5
JLK2-0.66 160x80II1000/1A~6300/1A160x80mm10~20VA1.0, 0.5

Drawings:

How to Choose a Current Transformer?

Window Size: according to the specification and number of busbars.

Rated Current Ratio: 1/3 larger than the measured primary current.

Rated Secondary Current: 5A or 1A. When the installation location of the instrument is far away from the current transformer or the loop load is large, please choose the secondary current of 1A.

Rated Burden: the measuring instrument is connected to terminals S1 and S2, and the total load of the connected circuit should not exceed the transformer’s rated load/burden.

Accuracy Class: for measurement—class 1.0, 0.5, 0.2, 0.5S, 0.2S; for protection—class 5P10, 5P20, 10P10, 10P20.

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