This model of zero sequence current transformer is an indoor device. It is an open type current transformer specially designed for 35KV indoor cable outlet. It is also used as relay protection in power system with rated frequency of 50Hz or 60Hz and rated voltage of 6-35KV.
The zero-sequence current transformer is open-close type, epoxy tree finger pouring structure, when installed, the transformer can be divided into two halves, and then combined into one, tightened with bolts, the bottom of the transformer has two installation holes, the inner diameter of the transformer has 60mm, 80mm, 100mm, 150mm, 180mm and other five specifications
1. The primary insulation of the zero sequence current transformer is guaranteed by the cable, and the insulation performance of the secondary winding is only checked. The two winding can withstand 3kV power frequency withstand voltage.
2. Rated current ratio, accuracy level and rated output are listed below.
2. Rated current ratio, accuracy level and rated output are listed below.
| Rated current ratio (A) |
Accuracy level | Rated output （VA） |
| 50/1 | 10P10 | 1 |
| 75/1 | 1.6 | |
| 100/1 | 2.5 | |
| 150/1 | 5 | |
| 200/1 | 5 | |
| 300/1 | 5 | |
| 400/1 | 5 | |
| 600/1 | 5 | |
| 100/5 | 10P10 | 2.5 |
| 300/5 | 2.5 | |
| 500/5 | 2.5 | |
| 800/5 | 2.5 | |
| 1000/5 | 2.5 |