The JDZ18-12RJC, JDZ18-12RVJC, and ZJ18-12RJC are 12kV indoor single-phase voltage transformers featuring epoxy resin casting with fully enclosed construction. Designed for indoor switch cabinet use, these transformers measure voltage, electric energy, and provide protective relaying in single-phase or three-phase AC circuits operating at 50Hz or 60Hz, with the highest equipment voltage rating of 12kV.
The iron core utilizes advanced cold-rolled silicon steel sheets to ensure low magnetism and high measurement accuracy. The high-voltage primary winding lead is routed from the top of the transformer, while the secondary winding lead exits from the transverse side, facilitating convenient wiring and installation.
| Type | Rated primary voltage (kV) |
Rated secondary voltage (kV) |
Accuracy classes combination | Rated output (VA) |
Thermal limiting current (VA) |
Rated insulation level (kV) |
| JDZ18-12RJC | 11 | 0.11 | 0.2 | 25 | 400 | 12/28/75 |
| 0.5 | 50 | |||||
| 1 | 80 | |||||
| 0.11/0.11 | 0.2/0.2 | 10/10 | 200/200 | |||
| 0.2/0.5 | 15/30 | |||||
| 0.11/0.22 | 0.2/6P | 15/500 | 500 | |||
| 0.5/6P | 30/500 |
