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LZZBJ9-12/175b/4 Current Transformer

Instrument Transformers

LZZBJ9-12/175b/4 Current Transformer

The LZZBJ9-12/175B/4 is a high-performance indoor current transformer engineered for 12kV medium-voltage power systems. It delivers accurate current measurement and flexible protection signal conversion for switchgear, metering cabinets, and distribution panels. Available in multiple winding configurations, this model offers exceptional versatility to meet diverse application requirements ranging from revenue metering to sophisticated relay protection.

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Model and Meaning

Technical Parameters

Rated primary current (A) Accuracy classes combination Rated secondary output (VA) Rated short-time thermal current (kA/s) Rated dynamic current (kA)
0.2S 0.2 0.5 (5)10P10 (5)10P15 (5)10P20
20100 0.2(S)/10P
0.5/10P
0.2(S)/0.2/5P
0.2(S)/0.5/5P
0.2(S)/0.5/5P20
0.2(S)/5P10/10P15
0.5/5P10/10P20		 10 10 10 30*,10 20*,15 15*,10 0.06I1n 0.15I1n
150200 9 22.5
300400 10 15 15*,30 20 15 18 45
500 30 75
600800 15*,20 36 90
10001250 15 20 60 130
15002000 30 30*,40 30*,40 30*,40 80 160
2500 20 40
3000 30*,40 30*,40 30*,40

Note: The data marked with* in the table are parameters for class combination 0.2/5P10-0.5/5P10.

Overall Dimension Drawing