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LZZBJ12-12 Current Transformer

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 LZZBJ12-12 Current Transformer

Type LZZBJ12-12  current transformer is used for metering and protective  relaying purposes for installation in indoor up to 12kV rated voltage frequency  50/60Hz, the current transformer is used for metering and protective relaying  action in indoor and especially is suited for using in the narrow case(fixed)  ring-network switchgear.

1. Rated insulation level: 12/42/75kV;  
2. Frequency(Hz): 50/60Hz;  
3. Rated primary current: 5-3150;  
4. Rated secondary current: 5A;  
5. Accuracy classes: 0.5/5P;  
6. Metering pole safeguard system: FS<10;  
7. 5P rated accuracy limited factor: 5P10;  
8. The measurement of partial discharge lev el is in accordance with GB7354-87 and IEC 185 Apparent partial discharge level      not more than 20PC;  
9. Power factor: 0.8 (lag);  
10. Rated primary current accuracy classes, rated output and short-time thermal Current see table.



Accuracy  classes:
0.2S/10P10  0.5/10P10    0.2S/10P/10   0.5/10P10  0.2S/10P10(15)  0.5S/10P10(15)    0.2/10P10(15)    0.5/10P10(15)    0.2S/10P10(15)    0.5S/10P10(15)    0.2/10P10(15)     0.5/10P10(15)


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