17kV Lightning Surge Arrester for Medium Voltage Protection

17kV Lightning Surge Arrester for Medium Voltage Protection

The YH5WS-17/50 is a high-performance 17kV gapless surge arrester designed to safeguard medium voltage distribution systems from lightning and switching overvoltages. With low leakage current and robust impulse withstand capability, it ensures reliable protection for substation feeders, distribution lines, and renewable energy connections.

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Product Overview

The YH5WS-17/50 surge arrester is engineered to protect medium voltage distribution systems (10‑15kV nominal) from transient overvoltages caused by lightning or switching operations. Featuring a gapless design with a rated voltage of 17kV, it provides continuous protection under steady‑state operating conditions while preventing catastrophic damage to electrical infrastructure. Designed in accordance with IEEE and IEC standards, this arrester combines precise voltage clamping, thermal stability, and environmental durability for reliable performance in diverse grid applications.

Product Features

◆Advanced Electrical Parameters: Rated voltage 17.0kV; continuous operating voltage 13.6kV; DC 1mA reference voltage 25.0kV.

◆Excellent Surge Withstand Capability: Lightning impulse (8/20μs) residual voltage ≤45.0kV; steep‑current impulse (1/4μs) residual voltage ≤57.5kV.

◆High Energy Handling Capacity: 4/10μs high‑current impulse rating of 40kA; long‑duration current withstand of 75A for 2000μs.

◆Superior Insulation & Leakage Performance: Maximum leakage current ≤50.0μA at 0.75×DC reference voltage; ensures low heat loss and extended service life.

◆Robust Mechanical Design: High‑purity silicone rubber housing with IP67 protection; resistant to moisture, UV, and dust.

Product Advantages

◆Reliable Overvoltage Protection: Precisely clamps transient surges, minimizing false operations and safeguarding connected equipment.

◆Low Maintenance & Long Lifespan: Ultra‑low leakage current reduces thermal stress, while durable housing withstands harsh environmental conditions.

◆Wide Application Compatibility: Suitable for pole‑mounted lines, substation feeders, and renewable energy systems; complies with IEEE C62.11 and GB 11032.

◆Easy Installation: Lightweight yet rugged design allows for quick mounting and reduces installation time.

◆Enhanced Grid Resilience: Helps maintain system stability in areas with frequent lightning activity or unstable grid conditions.

Usage Scenarios

◇Medium‑Voltage Distribution Networks: Protection of 10‑15kV overhead lines and underground cables.

◇Substation & Feeder Applications: Installed at transformer terminals, switchgear connections, and substation exits.

◇Renewable Energy Integration: Surge protection for solar farms, wind power collectors, and distributed generation tie‑points.

◇Industrial Power Systems: Safeguarding critical loads in manufacturing plants, mining operations, and data centers.

Technical parameters

System nominal voltage (kV) 10
Arrester Type (HY)YH5WS-17/50
Rated voltage (kV) 17
Gapless arrester Arrester continuous operating voltage (kV) 13.6
Dc 1mA reference voltage (kV) 25
Maximum leakage at 0.75x DC 1mA voltage (μA) 50
Peak residual voltage  (≯kV) 8/20 lightning impulse current 45
30/60 operating impulse current 42.5
1/4 steep impulse current 57.5
2000 μs square wave current capacity (A) 75
4/10 μs high current tolerance (kA) 40

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