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The Certified 36kV Polymer-Housed Surge Arrester is a high-performance, maintenance-free solution specifically designed to protect 36kV medium voltage distribution lines and connected electrical cables from:
| Threat | Description |
|---|---|
| Lightning strikes | Direct and indirect |
| Switching surges | Circuit breaker and disconnecter operations |
| Temporary overvoltages | Fault clearing, load rejection |
Engineered with a silicone rubber housing for superior environmental resistance, this arrester features a high-energy zinc oxide (ZnO) varistor core, ensuring reliable operation for up to 50 years in harsh environments.
| Environment | Conditions |
|---|---|
| Coastal regions | Salt fog, high humidity |
| Desert areas | Sand, dust, extreme temperatures |
| High-altitude installations | Up to 1,000 meters above sea level |
| Industrial zones | Chemical pollutants, heavy dust |
| Feature | Description |
|---|---|
| Housing material | Silicone rubber (polymer) – UV resistant, hydrophobic |
| Varistor core | Zinc oxide (ZnO) – high energy absorption |
| Maintenance | Maintenance-free |
| Service life | Up to 50 years |
| Voltage rating | 36 kV |
| Application | MV distribution lines |
✅ No maintenance required – reduces long-term operating costs
✅ Superior environmental resistance – withstands salt fog, dust, chemicals, UV
✅ High-energy ZnO varistor – reliable over-voltage protection
✅ Polymer housing – lightweight, non-fragile, easy to install
✅ 50-year service life – long-term investment protection
Medium voltage distribution lines (36 kV)
Substation protection
Industrial power networks
Renewable energy installations (solar farms, wind farms)
Coastal and desert power infrastructure
| Feature | Description | Benefit |
|---|---|---|
| Core Protection | Zinc Oxide (ZnO) Varistor technology with 100kA (4/10µs) high current impulse withstand | Provides extremely fast (nanosecond) response to clamp dangerous overvoltages, safeguarding power cables, transformers, switchgear, and sensitive electronic equipment |
| Robust Housing | Polymer-housed with silicone rubber, featuring a 1,082mm creepage distance suitable for Pollution Level IV | 70% lighter than porcelain, non-fragmenting (explosion-proof), and ideal for coastal grids (salt fog) and industrial/desert pollution |
| Safety & Monitoring | Integrated disconnector with visual failure indicator; explosion-proof design (non-fragmenting) | Enhances grid safety, allows easy fault identification from the ground, and prevents collateral damage to adjacent equipment |
| Global Compliance | Certified to IEC 60099-4, ANSI/IEEE C62.11, and GB/T 11032 | Guarantees performance and reliability for international projects and MV distribution networks worldwide |
Leakage current monitoring – optional built-in surge counter available
UV-resistant housing – silicone rubber resists cracking and degradation from prolonged sun exposure
Hydrophobic surface – water repellency prevents tracking and flashover in wet conditions
Wide temperature range – operates reliably from –40°C to +60°C
Seismic resistant – tested for earthquake zones (up to magnitude 8)
| Parameter | Specification | Standard / Test Method |
|---|---|---|
| System Voltage (Ur) | 36 kV | IEC 60099-4 |
| Rated Voltage (Ur) | 36 kV | ANSI C62.11 |
| Continuous Operating Voltage (MCOV – Uc) | 27.5 kV | IEC 60099-4 |
| Nominal Discharge Current (In) | 10 kA (8/20µs) | IEC 60539 |
| High Current Impulse Withstand | 100 kA (4/10µs) | IEC 60539 |
| Residual Voltage (Steep Current 1/10µs) | ≤ 97.5 kV | GB/T 11032 |
| Residual Voltage (Lightning 8/20µs) | ≤ 85 kV | IEC 60099-4 |
| Partial Discharge Level | ≤ 10 pC | IEC 60270 |
| Creepage Distance | 1,082 mm (Pollution Level IV) | IEC 60815 |
| Dry Arc Distance | ≥ 650 mm | IEC 60099-4 |
| Housing Material | Silicone Rubber (CTI ≥ 600) | ASTM D3638 |
| Weight | 2.8 kg | – |
| Operating Temperature Range | –40°C to +60°C | – |
| Maximum Altitude | Up to 1,000 m (higher on request) | – |
| Lifespan | > 50 years (typical) | – |
| Salt Spray Test | 5,000+ hours | ISO 9227 |
| Impulse Type | Waveform | Withstand Level | Application |
|---|---|---|---|
| Lightning impulse | 8/20 µs | 10 kA (nominal) | Standard surge events |
| High current impulse | 4/10 µs | 100 kA | Direct lightning strikes |
| Switching surge | 30/60 µs | 500 A | Switching operations |
| Long duration | 2 ms rectangular | 400 A | Temporary overvoltages |
This arrester is the optimal choice for protecting distribution lines and power cables in demanding scenarios:
| Application | Technical Fit | Benefit |
|---|---|---|
| Coastal & Polluted Areas | Polymer-housed design with high creepage distance (1,082mm) | Ensures reliability against salt spray, industrial contamination, and high humidity |
| Renewable Energy Integration | 100kA withstand capacity | Protects solar farm transformers, wind park collection systems, and inverter stations |
| Compact Urban Substations | Lightweight (2.8 kg) and space-saving design | Fits easily into switchgear, RMUs, and on distribution poles |
| Mountainous & Remote Networks | Robust performance across wide temperature range and altitudes up to 1,000m | Suitable for high-altitude installations and hard-to-access locations |
| Industrial Facilities | Pollution Level IV rating | Ideal for steel mills, cement plants, refineries, and chemical plants |
| Railway Electrification | 36kV rating | Protects traction power supply systems from lightning and switching surges |
| Attribute | 36kV Polymer Arrester | Porcelain Arrester | Gapless ZnO Arrester (Generic) |
|---|---|---|---|
| Weight | 2.8 kg – easy pole-mount | 9.5+ kg – requires crane | 3–5 kg |
| Installation | Single person, no heavy equipment | Two persons + lifting equipment | One person |
| Failure Safety | Non-fragmenting, explosion-proof | Risk of violent shattering | Non-fragmenting |
| Environmental Fit | Excellent for coastal/desert | Limited in high-pollution zones | Moderate |
| Creepage Distance | 1,082 mm (Pollution IV) | 800–900 mm (Pollution III) | 900–1,000 mm |
| Lifespan | > 50 years | ~30 years | 40–50 years |
| UV Resistance | Excellent (silicone rubber) | Good (porcelain) | Good |
| Hydrophobicity | High (water repellent) | Low (wettable surface) | Moderate |
| Maintenance | Zero maintenance | Occasional cleaning required | Zero maintenance |
The 36kV Polymer-Housed Surge Arrester is fully compliant with the following international standards:
| Standard | Scope | Compliance Status |
|---|---|---|
| IEC 60099-4 | Surge arresters – Metal-oxide surge arresters without gaps for AC systems | ✅ Fully compliant |
| ANSI/IEEE C62.11 | Standard for metal-oxide surge arresters for AC power circuits | ✅ Fully compliant |
| GB/T 11032 | Chinese national standard for AC surge arresters | ✅ Fully compliant |
| IEC 60815 | Pollution performance of insulators | ✅ Pollution Level IV |
| ISO 9227 | Salt spray corrosion testing | ✅ 5,000+ hours |
| IEC 60270 | Partial discharge measurements | ✅ ≤ 10 pC |
Batch-coded varistors – each zinc oxide varistor is batch-coded for full traceability
100% factory testing – every arrester undergoes routine tests before shipment
Type testing – performed by independent third-party laboratories
ISO 9001 certified manufacturing facility
| Test | Method | Acceptance Criteria |
|---|---|---|
| Impulse current withstand | 8/20 µs, 10 kA | No degradation, within residual voltage limits |
| High current impulse | 4/10 µs, 100 kA | No mechanical or electrical damage |
| Partial discharge | IEC 60270 | ≤ 10 pC at 1.05 × Uc |
| Power frequency voltage withstand | Dry and wet conditions | No flashover |
| Thermal stability | IEC 60099-4 Clause 7.4 | Pass |
| Sealing test | Immersion + leakage current | Pass |
| Salt spray | 5,000+ hours | No corrosion, no performance degradation |
| UV exposure | Accelerated weathering | No cracking, no chalking |
Mounting orientation: Vertical or horizontal (within ±15°)
Clearance distance: ≥ 650 mm (dry arc distance)
Terminal connection: Use corrosion-resistant hardware (aluminum or tinned copper)
Grounding: Connect to station ground grid or dedicated ground rod
Disconnector: Ensure visible from ground for easy fault identification
Zero routine maintenance required under normal operating conditions
Visual inspection recommended every 2–3 years (check for physical damage, tracking)
Leakage current monitoring (optional) for predictive maintenance
Replacement: After a high-energy event (e.g., direct lightning strike), perform diagnostic testing or replace
| Packaging Type | Description |
|---|---|
| Standard | Individual carton box with foam padding |
| Bulk | Wooden pallet with shrink wrap (up to 50 units per pallet) |
| Export | Wooden case (for sea or air freight) |
Shipping methods:
Sea freight – standard for large orders (20' or 40' containers)
Air freight – for urgent or small orders
Land freight – for regional delivery
Documentation included with each shipment:
Packing list
Commercial invoice
Routine test reports
Installation manual
Quality certificate
| Model | Voltage | MCOV | Discharge Current | Housing | Weight |
|---|---|---|---|---|---|
| 4E-36-P-10 | 36 kV | 27.5 kV | 10 kA (8/20µs) | Silicone rubber | 2.8 kg |
Optional accessories:
Surge counter (mechanical or electronic)
Leakage current monitor
Insulated base for pole mounting
Custom terminal configurations (upon request)
A: Polymer arresters are lighter (70% less weight), non-fragmenting (safer in failure), and offer better pollution performance due to higher hydrophobicity and creepage distance. Porcelain arresters are heavier and may shatter under fault conditions.
A: Yes, with derating. Contact our technical support team for altitude correction factors and customized solutions.
A: The integrated disconnector drops down when the arrester has failed, providing a clear visual indication from the ground. No special tools or climbing required.
A: > 50 years under normal operating conditions, based on accelerated aging tests and field experience.
A: Yes. The silicone rubber housing and high creepage distance (1,082mm) are specifically designed for Pollution Level IV environments, including coastal areas with high salt fog exposure.
A: Yes. We offer on-site installation training, technical documentation, and remote support to ensure proper installation and long-term performance.
