MOV blocks for DC arresters, including diameter 71mm,78mm and 99mm.
| DC system | DC | DC | DC |
| type | D71H35.4 | D78H35.4 | D99H21.4 |
| diameter (mm) | 70.5±1 | 78±1 | 99±1.2 |
| height (mm) | 35.4±0.3 | 35.4±0.3 | 21.4±0.3 |
| DC U1mA (kV) | 7.8±0.5 | 7.8±0.5 | 4.7±0.35 |
| IL at 75% of U1mA (µA) | ≤ 20 | ≤ 20 | ≤ 20 |
| Ures (kV) | 12.65±0.8 | 12.45±0.8 | 7.85±0.5 |
| typical Ures / U1mA | 1.59 | 1.58 | 1.54 |
| repetitive charge transfer Qrs (C) | 3.2 | 4 | 6 |
| guaranted 2ms test current (A) | 1500 | 2000 | 2500 |
| max 2ms test current (A) | 1600 | 2100 | 3000 |
| 4/10µs high current test (kA) | 100 | 100 | 100 |
| nominal discharge current In (kA) | 20 | 20 | 20 |
| accelerated ageing test | 115℃ 0.85U1mA/√2 Kct ≤ 1.0 | ||
