The HY1.5W-0.8/3.9 is a gapless metal-oxide surge arrester designed for low voltage power systems. Featuring a composite polymer housing and high-quality zinc oxide varistor elements, it provides reliable overvoltage protection against lightning strikes and switching surges for electrical equipment.
Model Designation
HY: Composite housing zinc oxide arrester
1.5: Nominal discharge current 1.5kA
W: Gapless type (no spark gaps)
0.8: Arrester rated voltage 0.8kV
3.9: Maximum residual voltage 3.9kV
Gapless design with excellent nonlinear volt-ampere characteristics
Composite silicone rubber housing with UV resistance
Overall molded construction for superior sealing performance
Compact and lightweight for easy installation
Fast response time with low residual voltage
Moisture-proof and explosion-proof design
| Model | HY1.5W-0.8/3.9 | |
|---|---|---|
| System nominal voltage | 0.66kV (r.m.s.) |  |
| Arrester rated voltage | 0.8kV (r.m.s.) | |
| Continuous operating voltage | 0.72kV (r.m.s.) | |
| DC reference voltage (U1mA) | ≥1.8kV | |
| Lightning impulse residual voltage (8/20μs) | ≤3.9kV | |
| 2ms square wave withstand capacity | 75A | |
| 4/10μs high current impulse withstand | 25kA | |
Applications
Low voltage distribution cabinets and switchgear panels
Control cabinets and protection panels
Low voltage incoming lines of substations
Industrial and commercial building power distribution
Telecommunications equipment power supply
Renewable energy systems (solar/wind) low voltage side
Residential power distribution
