The JDZ-12Q and JDZJ-12Q are 12kV indoor single-phase epoxy resin voltage transformers featuring epoxy resin casting and double-pole insulated design. These voltage transformers are primarily used within indoor switchgear cabinets for voltage measurement, electric energy metering, and protective relaying in single-phase or three-phase AC circuits operating at 50Hz or 60Hz.
Designed with high reliability and a low magnetism core, the transformers require minimal maintenance, ensuring long-term stable operation. They support a load power factor of cosΦ=0.8 (lagging) and comply with IEC 60044-2 and IEC 61869-1 & 3 technical standards. These units are suitable for indoor installation in medium-voltage power systems with equipment voltages up to 12kV.
| Type | Rated primary voltage (kV) |
Rated secondary voltage (kV) |
Accuracy classes combination | Rated output (VA) |
Thermal limiting current (VA) |
Rated insulation level (kV) |
| JDZ-12Q | 11 | 0.11 | 0.2 | 15 | 500 | 12/28/75 |
| 0.5 | 30 | |||||
| 1 | 60 | |||||
| 0.11/0.11 | 0.2/0.2 | 10/10 | 300/300 | |||
| 0.2/0.5 | 10/20 | |||||
| 0.11/0.22 | 0.2/6P(3P) | 15/300 | 500 | |||
| 0.5/6P(3P) | 30/300 | |||||
| JDZJ-12Q | 0.11/√3 | 0.11/0.22 | 0.2/6P(3P) | 15/50 | 500 | 12/28/75 |
| 0.5/6P(3P) | 30/50 | |||||
| 1/6P(3P) | 60/50 |
