18kV Polymer Housing Surge Arrester (Distribution Class)
High-Performance 18kV Lightning Arrester for 15kV-18kV Utility Networks
Our 18kV Silicone Rubber Surge Arrester series is engineered with advanced Zinc Oxide (ZnO) varistors to provide superior overvoltage protection. Designed for transformer protection and distribution line stability, these polymer surge arresters offer a robust shield against lightning impulses and switching transients, even in harsh environmental conditions.
Key Technical Advantages
Track-Resistant Silicone Rubber: Our polymer housing surge arrester features excellent hydrophobicity, significantly reducing leakage current in coastal or high-pollution areas.
Reliable ZnO Arrester Technology: Utilizing high-purity non-linear varistors for fast-acting response and low residual voltage.
Maintenance-Free Performance: The hermetically sealed, void-free design prevents moisture ingress, ensuring long-term outdoor surge protection.
Integrated Fault Isolation: Compatible with Surge Arrester Disconnectors for clear visual indication and grid stability.
Technical Specifications
Expert Procurement Tip: > When choosing between the 5kA (Normal Duty) and 10kA (Heavy Duty) models, consider your local keraunic levels. The 10kA 18kV Arrester provides a higher safety margin and energy-handling capability (100kA High Current Withstand) for lightning-prone regions.
Selection Guide:
1. Application Suitability
5kA Series: Best for standard distribution lines and light-to-moderate lightning environments.
10kA Series: Recommended for critical infrastructure, high-altitude areas, and regions with frequent severe storms.
2. Mounting & Accessories
We provide NEMA-standard cross-arm brackets and insulating bases. For automated maintenance, we highly recommend equipping the unit with our Arrester Isolator (Disconnector) to prevent permanent line faults after a device failure.
3. Selection Table For Your Reference:
| Rated Voltage (Ur) | Normal Voltage (System Voltage) | Typical Applications |
| 18kV | 15kV – 18kV | 15kV Distribution Lines |
| 21kV | 18kV – 20kV | 20kV Systems (Standard) |
| 24kV | 20kV – 22kV | 22kV Distribution Networks |
| 27kV | 22kV – 25kV | 25kV Power Grids |
| 33kV | 30kV – 33kV | 30kV Industrial / Utility |
| 36kV | 33kV – 35kV | 35kV Transmission & Substations |
International Standards Compliance
Our 18kV Distribution Class Arresters are designed and tested according to:
IEC 60099-4: Metal-oxide surge arresters without gaps for A.C. systems.
IEEE C62.11: Standard for Metal-Oxide Surge Arresters for AC Power Circuits.
Quality Control: 100% routine tested for Leakage Current and Reference Voltage before dispatch.
Request a Quote
As a professional International Trade Manager-led supplier, we understand the technical requirements of the B-end market. We offer:
Custom SKU Support: Tailored specifications to meet your local grid standards.
Supply Chain Integration: Competitive pricing for bulk orders and project tenders.
Technical Consultation: Direct communication for complex industrial applications.
Contact our engineering team today for 18kV Arrester pricing and lead times.
