The HY5WZ-10/27 is a gapless metal-oxide surge arrester designed for 6kV power systems. It features high-quality zinc oxide varistors with excellent nonlinear volt-ampere characteristics, enclosed in a silicone rubber composite housing. This station-class arrester 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 (D: DC application (HVDC and DC traction systems))
10: Rated voltage 10kV
27: Residual voltage 27kV
Gapless design with series-connected zinc oxide varistors
Silicone rubber housing with excellent UV resistance
Integral molding construction for superior sealing
Compact, lightweight design for easy installation
Fast response time with low residual voltage
| Model | HY5WZ-10/27 | |
|---|---|---|
| System nominal voltage | 6kV |  |
| Arrester rated voltage | 10kV | |
| Continuous operating voltage | 8.0kV | |
| DC reference voltage (U1mA) | ≥14.4kV | |
| Lightning impulse residual voltage | ≤27kV | |
| 2ms square wave withstand capacity | 150A | |
| 4/10μs high current impulse withstand | 65kA | |
| Creepage distance | ≥27mm/kV | |
| Standards compliance | GB11032, IEC 60099-4 | |
Applications
Substations and power plants
Medium voltage switchgear
Transformer protection
Distribution panels
Industrial power networks
