The JDZ11-17.5 and JDZ11-24 are 24kV indoor single-phase voltage transformers featuring epoxy resin casting with a fully enclosed design. They are used indoors to measure voltage, electric energy, and provide protective relaying in electrical systems operating at 50Hz or 60Hz, supporting equipment voltages of 17.5kV up to 24kV.
These transformers offer high reliability, a low magnetism core for precise measurements, and a large creepage distance to ensure excellent external insulation. Maintenance-free and robust, they comply with IEC 60044-2 and IEC 61869-1 & 3 standards, guaranteeing safe and stable operation in indoor electrical installations.
| Type | Rated primary voltage (kV) |
Rated secondary voltage (kV) |
Accuracy classes combination | Rated output (VA) |
Thermal limiting current (VA) |
Rated insulation level (kV) |
| JDZ11-17.5 | 13.8 15 |
0.11 | 0.2 | 25 | 600 | 17.5/38/95 |
| 0.5 | 50 | |||||
| 1 | 150 | |||||
| 0.11/0.11 | 0.2/0.2 | 15/15 | 300/300 | |||
| JDZ11-24 | 22 | 0.2/0.5 | 15/30 | 24/50/125 | ||
| 0.11/0.22 | 0.2/6P(3P) | 15/600 | 600 | |||
| 0.5/6P(3P) | 25/600 |
