The JDZX10-12A and JDZX10-12B are 12kV indoor single-phase voltage transformers featuring epoxy resin casting with fully enclosed construction. These transformers are designed for installation in indoor switchgear cabinets to measure voltage, electric energy, and provide protective relaying in single-phase or three-phase AC circuits operating at 50Hz or 60Hz.
The iron core is made of advanced cold-rolled silicon steel sheets to ensure high performance and low losses. The high-voltage primary winding output is accessed from the top of the transformer, while the secondary winding output is taken from the transverse side. They support a load power factor of cosΦ=0.8 (lagging) and comply with IEC 60044-2 standards.
| Type | Rated primary voltage (kV) |
Rated secondary voltage (kV) |
Accuracy classes combination | Rated output (VA) |
Thermal limiting current (VA) |
Rated insulation level (kV) |
| JDZX10-12A | 11/√3 | 0.11/√3/0.11/3 | 0.2/6P(3P) | 15/50 | 300 | 12/28/75 |
| 0.5/6P(3P) | 30/50 | |||||
| 1/6P(3P) | 60/50 | |||||
| JDZX10-12B | 11/√3 | 0.11/√3/0.11/3 | 0.2/6P(3P) | 25/50 | 400 | 12/28/75 |
| 0.5/6P(3P) | 50/50 | |||||
| 1/6P(3P) | 80/50 |
