YH5WZ-51/134 (Station-Type) -51KV Gapless Line-Type Lightning Arrester

Product Overview

[Key Advantages]

Superior Surge Protection: Uses a high-performance zinc oxide varistor for millisecond-level response, effectively limiting lightning and switching overvoltages to protect equipment.
Enhanced Grid Reliability: As a maintenance-free overvoltage protection solution, it significantly reduces lightning-induced fault tripping rates, improving line lightning resistance by over 60%.
Rugged and Durable: The one-piece molded polymer housing is moisture-proof, explosion-proof, and pollution-resistant, ensuring long-term stable operation in extreme environments.
Flexible Installation: Its compact and lightweight design allows for versatile suspension or stake-type mounting on tower structures, making installation quick and easy.

[Applications]

The HY5WZ-51/134 series arrester is specifically designed for AC transmission lines and substations, suitable for power systems from 10kV to 220kV. By being installed in parallel with insulator strings, it effectively clamps lightning overvoltages. This product is particularly well-suited for complex terrains like mines, coastal regions, and mountainous areas, serving as an ideal choice for strengthening grid lightning resistance.

Brand Story

[Weisho Electric: Your Trusted Partner for Power Safety]

Since our establishment in 2015, Weisho Electric has focused on the high-voltage electrical field. We understand that every power transmission is vital for safety and stability. The HY5WZ series arrester is the culmination of our R&D team's dedication, aimed at providing global clients with efficient and reliable overvoltage protection solutions. We don't just supply products; we are guardians of your power system.

Technical & Professional Details

Core Technology and Operating Principles

Our arrester uses an advanced gapless design. Under normal operating voltage, the zinc oxide (ZnO) resistor blocks are in a high-resistance state, allowing only a minimal current to pass. When subjected to a lightning overvoltage, the resistance rapidly changes to a low-resistance state, safely diverting the overvoltage energy to the ground.

[Model & Voltage Explained]The 51kV in the model HY5WZ-51/134 refers to the arrester's own rated voltage, which is a critical insulation and protection parameter. The arrester is specifically designed for power systems with a rated voltage level of 35kV. Understanding this distinction helps you select the correct product more accurately.

[Distinction from Conventional Arresters]

Compared to conventional gapped arresters, the HY5WZ series features a gapless structure, which provides a faster response and continuous protection capability.

Technical Specifications

Parameter	HY5WZ-51/134 (Station-Type)
Product Model	HY5WZ Series
Rated System Voltage	35 kV
Rated Arrester Voltage	51 kV
Operating Voltage	40.8 kV
Impulse Current	114 kA
Continuous Operating Voltage	40.8 kV
Lightning Impulse Residual Voltage	134 kV
Power Frequency Withstand Voltage	75 kV
Creepage Distance	1140 mm

YH5WZ-51/134 (Station-Type) -51KV Gapless Line-Type Lightning Arrester

Trust & Brand Strength

Customer Case Studies

Solar Power Plant Project in Africa

Client: A major renewable energy company in Africa.
Project Challenge: The project was located in a region with frequent thunderstorms, requiring an arrester that could operate reliably in extreme climates.
Our Solution: Our HY5WZ series arrester successfully handled the harsh local weather with its superior surge protection and durable housing, ensuring the power plant's continuous and stable operation and earning the client's trust.

Customer Testimonials

"The installation process was very smooth. Our maintenance team reports that this arrester performs stably and exceptionally well during the rainy season." - From a power company in Texas, USA