The HY5WZ-10/27 is a gapless metal-oxide surge arrester designed for 10kV power systems. Featuring zinc oxide varistors enclosed in a silicone rubber housing, it provides reliable protection against lightning overvoltages and switching surges for substation and power plant equipment.
Model Designation
HY: Composite housing zinc oxide arrester
5: Nominal discharge current 5kA
W: Gapless type
Z: Station class for substations (D: DC application (HVDC and traction systems))
10: Rated voltage 10kV
27: Maximum residual voltage 27kV
Gapless design for fast response
Silicone rubber housing with UV resistance
High energy absorption capacity
Compact and lightweight for easy installation
Reliable sealing against moisture
| Model | HY5WZ-10/27 | |
|---|---|---|
| System voltage | 6kV |  |
| Rated voltage | 10kV | |
| DC reference voltage | ≥15.0kV | |
| Lightning residual voltage | ≤27kV | |
| 2ms square wave withstand | 150A | |
| Standards | GB11032, IEC 60099-4 | |
Applications
Substations and power plants
10kV switchgear panels
Transformer protection
Distribution equipment
Industrial power networks
