The HY5WZ-51/134 is a gapless metal-oxide surge arrester designed for 35kV power systems. Featuring zinc oxide varistors enclosed in a silicone rubber housing, it provides reliable protection for electrical equipment against lightning overvoltages and switching surges.
Model Designation
HY: Composite housing zinc oxide arrester
5: Nominal discharge current 5kA
W: Gapless type
Z: Station class for substations
51: Rated voltage 51kV
134: Maximum residual voltage 134kV
Gapless design for fast response
Silicone rubber housing with UV resistance
High energy absorption capacity
Compact and lightweight construction
Reliable moisture sealing
| Model | HY5WZ-51/134 | |
|---|---|---|
| System voltage | 35kV |  |
| Rated voltage | 51kV | |
| DC reference voltage | ≥73.0kV | |
| Lightning residual voltage | ≤134kV | |
| 2ms square wave withstand | 400A | |
| Standards | GB11032, IEC 60099-4 | |
Applications
Substations and power plants
35kV switchgear and distribution panels
Transformer protection
Overhead transmission lines
Industrial power networks
