HY5WS-17/50 Drop-Out Type Zinc Oxide removable Lightning Arrester
The HY5WS-17/50 Drop-Out Type Zinc Oxide Removable Lightning Arrester is designed for 10–20kV overhead distribution systems, providing reliable protection against lightning and switching overvoltages. Its removable drop-out structure allows the arrester unit to be conveniently disconnected for inspection, maintenance, or replacement.
The arrester uses a gapless zinc oxide varistor core and a durable polymer housing for fast surge response and reliable outdoor insulation. Its extended creepage distance makes it suitable for coastal, polluted, humid, and other demanding environments, while the practical mounting design simplifies field installation and servicing.
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The HY5WS-17/50 Detachable Zinc Oxide Surge Arrester is a polymer-housed metal oxide arrester designed for 10–20kV overhead distribution networks. Its detachable construction allows the arrester unit to be removed more easily for inspection, maintenance, or replacement, helping simplify field servicing.
The arrester uses a gapless MOV core with effective surge energy absorption to protect distribution equipment from lightning and switching overvoltages. Its extended creepage design and silicone rubber housing provide good insulation performance in polluted and outdoor environments, while the hydrophobic surface helps resist moisture and contamination.
With its compact and practical construction, the HY5WS-17/50 is suitable for medium-voltage distribution lines, transformer incoming-line protection, and switchgear surge protection. It is particularly useful in coastal, high-altitude, and pollution-prone areas where reliable outdoor insulation and long-term surge protection are required.
Operating Conditions
1. Altitude: ≤ 3000 meters;
2. Ambient Temperature: -40°C to +60°C;
Technical Data
| Item | Unit | Parameter | |
| Rated Voltage | kV | 17 | |
| Continuous Operating Voltage | 13.6 | ||
| Nominal Discharge Current | kA | 10 | |
| High Current Impulse | kA (4/10μs) | 100 | |
| 8/20μs Residual Voltage | kV | ≤45 | |
| Energy Handling | / | ≥2.5kJ per kV of Uc | |
| Creepage Distance | mm | ≥800 | |
| Mounting Type | / | Fixed (Crossarm / Transformer) | |
| Model | System Voltage(kV) | Rated Voltage(kV) | Continuous Operation Voltage(kV) | UImAD.C KV |
Nominal discharge current Residual voltage VKV |
2ms square wave pass Flow capacity (A) |
| YH5WS-10/30DL | 6 | 10 | 8 | 15 | 30 | 100 |
| YH5WS-10/30DL-TB | ||||||
| YH5WS-17/50DL | 10 | 17 | 136 | 25 | 50 | |
| YH5WS-17/50DL-TB | ||||||
| YH5WZ-17/45DL | 24 | 45 | ||||
| YH5WZ-17/45DL-TB |
Application Scenarios
The YH5WS-17/50 Detachable Zinc Oxide Surge Arrester is suitable for medium-voltage distribution systems that require reliable and durable overvoltage protection.
- 10–20kV Overhead Distribution Lines: Helps protect line insulation and electrical equipment from lightning and switching surges.
- Transformer Incoming Protection: Suitable for pole-mounted and pad-mounted transformers to reduce transient overvoltage stress.
- Medium-Voltage Switchgear: Provides surge protection for switchgear and associated distribution equipment.
- Coastal and Polluted Areas: Suitable for locations exposed to high humidity, salt fog, industrial pollution, and other demanding outdoor conditions.
- Fixed-Mount Applications: Designed for installations where a mechanical dropout function is not required.
Product Structure Highlights
- Weather-Resistant Silicone Housing: The polymer housing provides reliable insulation and good resistance to UV radiation, moisture, and outdoor weather conditions.
- Gapless MOV Core: Zinc oxide varistor technology provides a fast response to transient overvoltages and supports stable long-term operation.
- Extended Creepage Distance: The longer creepage path improves insulation performance in polluted environments, including coastal, industrial, and dry or dusty areas.
- Corrosion-Resistant Terminals: Stainless steel or hot-dip galvanized fittings provide improved resistance to corrosion and help maintain reliable electrical connections.
- Strict Quality Control: Each unit undergoes routine testing to verify electrical performance and product reliability before delivery.
