BH-0.66 Solid Current Transformer

The BH-0.66 solid current transformer is designed for indoor usage, specifically for AC circuits with a rated voltage of 0.66KV and below, and a rated frequency of 50Hz. It serves the purpose of measuring electric energy and current, as well as providing relay protection. This product is a plastic molded current transformer, widely utilized in various complete cabinet setups. It adheres to the standards of IEC60044-1, IEC61869-2, IEC61869-1, and GB1208-2006 for Current Transformers.

Technical Parameters:

Serieslow voltage current transformer
Item Number BH-0.66
Rated Primary Current 5A to 6300A
Rated Secondary Current 5A, 1A
Rated Load 2.5/5/10/20/40VA
Accuracy Class 0.2S/ 0.5S/ 0.2/ 0.5/1.0
Rated voltage AC 0.66kV
Rated Frequency 50/60Hz
Insulation Class E
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
BH-0.66 solid5/5A~75/5Abusbar2.5~5VA1.0, 0.5
BH-0.66 solid5/1A~75/1Abusbar2.5~5VA1.0, 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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