Product overview
● The rear plug-in arrester is connected to the front plug or another rear plug to provide overvoltage protection for electrical equipment.
● The types of lightning arresters used in the transformer neutral point ungrounded system (18/20kV) are: ZRYH5WZ-32/85 (power station type) and ZRYH5WX-34/90 (line type).
● The types of lightning arresters used in the transformer neutral grounding system (12/20kV) are: YH5WZ-26/66 (power station type) and YH5WZ32/85 (line type).
Electrical Performance
Project | Unit | YH5WZ-26/66 parameters | YH5WZ-32/85 parameters | YH5WX-34/90 parameters | HY5WZ-34/85 parameters |
Nominal system voltage | kV | 20 | 20 | 20 | 20 |
Rated voltage of lightning arrester | kV | 26 | 32 | 34 | 34 |
Continuous operating voltage | kV | 20.8 | 25.6 | 27.2 | 27.2 |
DC 1mA reference voltage | ≥Kv | 37 | 47 | 50 | 48 |
Steep wave shock residual pressure | 76 | 95 | 104 | 95 | |
Lightning impulse residual voltage | 66 | 85 | 90 | 85 | |
Operating impact residual pressure | 56 | 75 | 80 | 75 | |
Square wave shock tolerance | A | 150 | 150 | 150 | 200 |
Large current impact tolerance | kA | 65 | 65 | 65 | 65 |