The LZJC-12(G) current transformer is a 12kV indoor single-phase unit featuring epoxy resin casting insulation with a fully enclosed support structure. Both the primary and secondary windings, along with the annular magnetic core, are securely sealed within the resin body. A special external groove design enhances the external insulation performance and electrical reliability.
Thanks to its lightweight construction, the LZJC-12(G) can be installed in any direction, offering high flexibility for compact switchgear layouts. It is designed to perform reliably even in harsh, humid, and polluted indoor environments. This CT is widely applied in current measurement, energy metering, and protective relaying at a rated frequency of 50Hz or 60Hz and for equipment up to 12kV.
| Rated current ratio (A) | Accuracy classes combination | Rated output (VA) COSφ=O.8 |
FS | ALF | Rated short-time thermal current (kA/S) | Rated dynamic current (kA) | ||
| Measuring | Protective | |||||||
| 0.2(S) | 0.5 | 10P | ||||||
| 5~200/5 | 0.2(S)/0.2(S) 0.2(S)/0.5 0.2(S)/10P 0.5/10P |
10 | 15 | 15 | 5 (10) |
10 | 75I1n | 180I1n |
| 300/5 | 20 | 50 | ||||||
| 400/5 | 30 | 75 | ||||||
| 500/5 | 30 | 75 | ||||||
| 600/5 | 40 | 80 | ||||||
| 800/5 | 40 | 80 | ||||||
| 1000/5 | 63 | 105 | ||||||
