| S.N. | Item | General parameters on ZZF1-210(L) | General parameters on ZZF1-350(L) |
| 1 | nominal system voltage,kV dc | 200 | 320 |
| 2 | rated maximum operating voltage Urdc, kV dc | 210 | 350 |
| 3 | rated lightning impulse withstand
voltage, kV |
1050 | 1175 |
| 4 | rated operating impulse withstand voltage, kV | 450 | 950 |
| 5 | rated DC withstand voltage(phase
to earth), kV |
400 | 630 |
| 6 | rated current, A dc | 4000 | 4000 |
| 7 | rated short time thermal current,
kA |
50(1s) | 50(1s) |
| 8 | peak withstand current | 125 | 125 |
Main characteristics:
Modular design, flexible layout, compact structure, small size, excellent resistance, the whole no horizontal basin. The isolatior is linear structure;
All-fiber current transformer, easy to install and maintain;
Voltage transformer, lightning arrester horizontal layout, low center of gravity, good shock resistance.
The overall size (L x W x H) of ZZF1-210(L) DC GIS: 9.5m x 1.3m x 7.5m.
The overall dimensions (L x W x H) of the ZZF1-350(L) DC GIS: 11m x 1.7m x 8m.
