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The YH5W-9 Polymeric Arrester is designed for 9kV distribution networks, providing reliable surge protection against lightning strikes and switching overvoltages. The polymeric silicone rubber housing delivers excellent hydrophobicity, low weight, and strong mechanical strength. Its high-performance MOV blocks ensure fast response and stable protection for overhead lines, transformers, and electrical equipment.
Zinc oxide lightning arrester is a lightning arrester with good protective performance. Utilizing the excellent nonlinear volt-ampere characteristics of zinc oxide, the current flowing through the lightning arrester at normal operating voltage is extremely small (microampere or milliampere level); When overvoltage occurs, the resistance drops sharply, releasing the energy of overvoltage to achieve protection.
Lightweight polymer housing, easy to install on poles
Strong hydrophobic performance, ideal for pollution zones
High-energy MOV blocks for stable surge absorption
UV-resistant, weather-resistant design for long service life
Excellent sealing prevents moisture ingress
Suitable for compact and modern distribution systems
9kV Overhead Distribution Feeders:Installed on poles to protect conductors and equipment against lightning surges.
Distribution Transformers (Pole-mounted / Pad-mounted):Connected at the HV side of transformers to limit surge energy entering windings.
Reclosers, Switches & Sectionalizers:Placed near switching devices to reduce switching overvoltage impact.
Mountainous, Coastal & High-Pollution Areas:Polymeric insulation maintains hydrophobicity and prevents flashover.
Renewable Energy Distribution Lines:Used on wind/solar feeder lines to protect inverters and equipment.
Each YH5W-9 arrester undergoes MOV performance testing, leakage current inspection, sealing verification, mechanical strength testing, and full routine checks according to IEC standards.
Q1: Can it be used in high-pollution areas?
A1: Yes. The polymer housing performs exceptionally well in contaminated environments.
Q2: Does it require maintenance?
A2: Minimal maintenance; only periodic visual inspection is recommended.
1.Current handling capability: Surge arresters can effectively deal with various types of overvoltages, including lightning overvoltages, power frequency transient overvoltages, and operational overvoltages, demonstrating strong current handling capabilities.
2.Protection advantage: Zinc oxide lightning arrester, as an electrical protection equipment, plays a crucial role in the power system. It can protect various electrical equipment from overvoltage damage and demonstrate excellent protection performance.
3.Sealing reliability: the lightning arrester components use high-quality composite jackets, which not only have good anti-aging performance, but also have excellent air tightness.
4.Anti pollution capability: Zinc oxide lightning arresters have been designed with full consideration of anti pollution performance, thus possessing high anti pollution capability.

Type | MOA Rated voltage | MCOV | Current Impulse Residual Voltage | 2ms Rectangular current impulse withstand
| 4/10μs High current impulse withstand | ||
1/4μs Lightning current impulse KV(crest) | 8/20μs Lightning current impulse KV(crest) | 30/60μs Switching current impulse
| |||||
YH5W-9 | |||||||
9 | 7.65 | 33.7 | 27 | 23.8 | 150 | 65 | |
The earthquake intensity dose not exceed 7 degrees.
