LQG-0.66 Current Transformer

The LQG-0.66 LV current transformer is designed for indoor use in AC circuits up to 0.66KV and 50Hz. It offers high accuracy, small current ratio, and substantial burden, exemplified by its compatibility with the 1/1A, 10VA class 0.2 specifications. Its copper middle busbar ensures reliable high-current performance. This CT conforms to internationally recognized standards including IEC60044-1, IEC61869-2, IEC61869-1, and GB1208-2006 for Current Transformer, reflecting its commitment to quality and precision. We appreciate your consideration in sourcing this exemplary solution.

Technical Parameters:

Serieslow voltage current transformer
Item Number LQG-0.66
Rated Primary Current 1A to 1500A
Rated Secondary Current 5A, 1A
Rated Load 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:

ModelRatioRated Burden Accuracy Class
LQG-0.665/5A~1500/5A5~15VA1.0, 0.5, 0.2, 0.5S, 0.2S
LQG-0.661/1A~200/1A5~15VA1.0, 0.5, 0.2, 0.5S, 0.2S

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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