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JOHNN

Instrument Transformers

LZZBJ9-12/175b/2 Current Transformer

The LZZBJ9-12/175B/2 is a high-performance indoor current transformer designed for 12kV medium-voltage power systems. It delivers precise current measurement and reliable protection signal conversion for switchgear, metering cabinets, and distribution panels, making it an ideal choice for utility substations, industrial facilities, and commercial power installations.

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Model and Meaning

Technical Parameters

Rated primary current (A) Accuracy classes combination Rated secondary output (VA) Rated shorttime thermal current (kA/s) Rated dynamic current (kA)
0.2S 0.2 0.5 10P10 10P15
5 0.2(S)/10P10
0.2(S)/10P15
0.5/10P10
0.5/10P15
10 10 15*,20 20 20 0.3 0.75
10 0.6 1.5
15 0.9 2.25
20 1.2 3
25 1.5 3.75
30 1.8 4.5
40 2.4 6
50 3 7.5
75 4.5 11.25
100 6 15
150 9 22.5
200 12 30
300 20 30 18 45
400 24 60
500 30 75
600 36 90
800 48 120
1000 15 60 130
1200 60 130
1500-3000 30 60 30 80 160

Note:The data marked with* in the table are parameters for class combination 0.5 and 10P15

Overall Dimension Drawing