The LZZBJ15-12 current transformer is a 12kV indoor single-phase device utilizing epoxy resin casting insulation. Its fully enclosed support structure encapsulates the primary and secondary windings, along with the annular magnetic core, within a solid epoxy body. This design ensures excellent electrical insulation, mechanical strength, and long-term operational stability in medium-voltage systems.
This model includes two independent secondary windings: one for current measurement and the other for protection applications. It is widely used in power systems for accurate current measurement, energy metering, and relay protection. Operating at a rated frequency of 50Hz or 60Hz, it complies with IEC 60044-1 and IEC 61869-1 & 2 standards and is suitable for indoor installation in environments requiring a high level of safety and reliability.
| Rated current ratio (A) | Accuracy classes combination | Rated output (VA) COSφ=0.8 |
FS | ALF | Rated short-time thermal current (kA/S) | Rated dynamic current (kA) | ||
| Measuring | Protective | |||||||
| 0.2(S) | 0.5 | 10P | ||||||
| 10-200/5 |
0.2(S)/0.2(S) 0.2(S)/0.5 0.2(S)/10P 0.5/10P |
10 15 |
15 | 15 |
5 (10) |
10 15 20 |
100I1n | 250I1n |
| 300/5 | 31.5 | 80 | ||||||
| 400/5 | 31.5 | 80 | ||||||
| 500/5 | 40 | 100 | ||||||
| 600/5 | 50 | 125 | ||||||
| 800/5 | 20 | 63 | 125 | |||||
| 1000/5 | 80 | 160 | ||||||
| 1200~1500/5 | 80 | 160 | ||||||
| 1500~2000/5 | 100 | 160 | ||||||
| 2000~2500/5 | 100 | 160 | ||||||
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