The JDZ10-12R, JDZ10-12RV, JDZF10-12R, and JDZF10-12RV are 12kV indoor single-phase voltage transformers featuring epoxy resin casting and a fully enclosed construction. These units are widely used in single-phase or three-phase power systems to measure voltage, electric energy, and provide protective relaying at 50Hz or 60Hz.
These voltage transformers are built with high-performance cold-rolled silicon steel cores for improved efficiency and low core magnetism. The high-voltage output from the primary winding is accessed at the top, while the secondary output is located on the transverse side. Designed for high reliability and minimal maintenance, they comply with IEC 60044-2 and IEC 61869-1 & 3 standards and support a load power factor of cosΦ=0.8 (lagging).
| Type | Rated primary voltage (kV) |
Rated secondary voltage (kV) |
Accuracy classes combination | Rated output (VA) |
Thermal limiting Output (VA) |
Rated insulation level (kV) |
| JDZ10-12R(V) | 11 | 0.11 | 0.2 | 25 | 400 | 12/28/75 |
| 0.5 | 50 | |||||
| 1 | 80 | |||||
| JDZF10-12R(V) | 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 |
