Reliable Distribution Line Protection Against Lightning and Switching Surges
Ensure grid stability with our AD-1 Series Surge Arresters, combining advanced zinc oxide (ZnO) varistor technology with durable silicone rubber housing. Rated for 12kV systems, this series offers superior protection for distribution lines, transformers, and substation equipment, specifically designed for harsh outdoor environments. Optimize your distribution network with reliable, maintenance-free surge protection.
[Key Specifications At-A-Glance]
[Expert Guide: Selecting the Right Arrester]
For procurement specialists and engineers, understanding the subtle differences between the 5kA and 10kA models is crucial for cost-effective network design. Both models offer excellent protection for 12kV systems, but they are designed for different fault energy levels.
Use this guide to avoid over-specification or under-protection:
Model Breakdown & Procurement Recommendations
| Feature | YH5W-12 | YH10W-12 | Key Difference & Buyer Tip |
| Nominal Class | 5kA (rms) | 10kA (rms) | The core rating. 10kA is a heavier-duty class. |
Residual Voltages
| 44.2kV/36kV /27kV | 44.2kV/36kV /27kV | Performance is identical for transient clipping. This is an excellent feature, as the heavier-duty model doesn’t sacrifice clamping speed. BUYER TIP: For critical equipment protection, both offer the same high protection margin. |
| Long Impulse Withstand (2000 u s) | 150 A (crest) | 250 A (crest) | Specifies the arrester’s energy-handling capability for long-duration switching surges. BUYER TIP: Select 10kA for lines known for frequent switching or long lines prone to trapping charge. |
| High Current Withstand (4/10 u s) | 65 kA (crest) | 100 kA (crest) | Determines how well the arrester survives close-proximity, high-energy lightning strikes. BUYER TIP: Choose 10kA for regions with high keraunic levels (frequent severe lightning strikes) or critical-path distribution transformers. |
| Best For | Light-to-medium lightning environments, standard distribution lines, cost-conscious projects. | Heavy lightning zones, high-altitude regions, protecting critical transformers/switches, switching-surge-prone networks. |
[Why Choose Our Polymer Arrester?]
1. Superior Housing Material
The hydrophobic silicone rubber housing offers unparalleled resistance to pollution, tracking, and environmental erosion. It forms beads on surface water, breaking conductive paths and preventing tracking failure. Its lightweight, flexible nature makes handling easy and reduces the risk of breakages compared to porcelain.
2. Integrated NEMA-Style Bracket & Optional Disconnector
The design includes a robust, integrated mounting bracket that simplifies installation on poles or transformer tanks. The bottom terminal is designed to accommodate an optional, optional thermal disconnector (isolator), providing a clear visual indication of a failed unit for maintenance teams.
3. Non-Linear ZnO Varistors
At the core are high-purity Zinc Oxide (ZnO) varistors. These offer a highly non-linear current-voltage characteristic, allowing the arrester to change from a high-impedance state (insulator) to a low-impedance state (conductor) in nanoseconds when a surge occurs, efficiently protecting your system.
4. Hermetically Sealed & Maintenance-Free
The injection-molded housing is directly vulcanized onto the ZnO column, creating a void-free, hermetically sealed unit that prevents moisture ingress, ensuring long-term, maintenance-free operation.
[Targeted User Groups]
Power Distribution Companies (Utilities) for grid reliability.
Transformer Manufacturers for integrated protection.
Contractors & EPCs for cost-effective distribution projects.
