The JZW-12KV voltage transformer is an outdoor epoxy resin cast insulation, suitable for use in AC 50Hz, rated voltage 12KV and below power systems for voltage and energy measurement and relay protection.
| Rated voltage ratio (V) | Accuracy level and rated output (VA) | Maximum output (VA) |
| zero point two | zero point five | 0.2/0.2 0.2/0.5 | 0.5/0.5 | 6P |
10000/100 | forty | eighty | | | | three hundred |
| 10000/100/100 | | | 25/25 | 40/40 | |
| 10000/√3/100/ √3/100/3 | twenty | forty | forty-five | | fifty |
| 10000/√3/100/ √3/100/√3 /100/3 | | | 15/15 | 40/40 |

JZW-12KV Voltage Transformer