Y5WZ-108/281 110kV Porcelain Arrester - Station Type Overvoltage Protection
Y5WZ-108/281 110kV Porcelain Arrester is a station type gapless zinc oxide arrester, suitable for overvoltage protection of transmission and transformation equipment and transformers in 110kV power systems. The porcelain housing structure has excellent pollution resistance and aging resistance.
Product Overview
Product Name: Y5WZ-108/281 110kV Porcelain Arrester
Voltage Level: 110kV (suitable for 110kV/126kV power systems)
Product Model: Y5WZ-108/281
Product Type: Station Type Gapless Zinc Oxide Arrester
Housing Material: High-strength porcelain (porcelain housing)
Core Component: Zinc oxide varistor discs
Applicable Standard: GB11032-2000 "AC Gapless Metal Oxide Arresters"
Manufacturer: Shanghai Gaosuo Electric Co., Ltd.
Product Brand: Gaosuo Electric
Main Technical Parameters
| Item | Parameter Value |
|---|
| System Nominal Voltage (kV) | 110 |
| Arrester Model | Y5WZ-108/281 |
| Arrester Rated Voltage (kV) RMS | 108 |
| Arrester Continuous Operating Voltage (kV) RMS | 84 |
| DC 1mA Reference Voltage (kV) min. | 157 |
| Maximum Leakage Current at 0.75 DC 1mA Voltage (μA) | 50 |
| 8/20 Lightning Impulse Residual Voltage (kV) max. | 281 |
| 30/60 Switching Impulse Residual Voltage (kV) max. | 239 |
| 1/4 Steep Wave Impulse Residual Voltage (kV) max. | 323 |
| 2000μS Square Wave Current Capacity (A) | 100 |
| 4/10 High Current Withstand Capability (kA) | 65 |
The Y5WZ-108/281 110kV porcelain arrester is suitable for power systems with rated voltage 108kV and continuous operating voltage 84kV, with lightning impulse residual voltage not exceeding 281kV, providing superior and reliable protection performance. It is an ideal overvoltage protection device for 110kV substations and transmission lines.
Product Structural Features
The Y5WZ-108/281 110kV porcelain arrester uses high-strength porcelain housing as the insulation shell, with good weather resistance, pollution resistance and aging resistance. High-quality zinc oxide varistor discs are used internally. Utilizing the excellent nonlinear volt-ampere characteristics of zinc oxide, the current through the arrester is only microampere level under normal operating voltage. When overvoltage occurs in the system, the resistance drops sharply, quickly releasing overvoltage energy and effectively protecting power equipment.
Service Environment Conditions
- Ambient temperature: -40degC to +40degC
- Altitude: not exceeding 2000m
- Power frequency: 48Hz to 62Hz
- Maximum wind speed: not exceeding 35m/s
- Seismic intensity: 8 degrees and below
- Pollution level: Class III (medium pollution)
Product Application Scope
The Y5WZ-108/281 110kV porcelain arrester is widely used in substations, switching stations, transmission lines and other locations in 110kV power systems as overvoltage protection devices for transformers, circuit breakers, busbars and other power equipment. It can effectively limit atmospheric overvoltages and switching overvoltages, ensuring safe and reliable operation of the power system.
