Shaanxi Oumude Electronics Co., Ltd.
Address:
No. 327, Yao Si Road, High-tech Zone, Han Cheng City, Weinan City, Shaanxi Province, China

HIGH-VOLTAGE GRID
Line Type Metal Oxide Surge Arrester Protection Systems

Advanced ZnO varistor technology designed to safeguard electrical equipment from lightning strikes and switching overvoltages in transmission networks.

Reference
Production Scale
Global
Service Reach
Standard
Lead Time
Compliant
Quality Rate

Engineering Grid Stability
& Surge Protection

Mitigating overvoltage risks through precision-engineered ZnO varistor technology.

◆ In high-voltage transmission, a composite wall is composed of an insulating material to prevent flashover. Our surge arresters are critical protective devices installed near substations and transformers to safeguard electrical equipment from lightning strikes and switching transients, ensuring system stability.

◆ By utilizing composite wall is composed of an insulating material principles for the housing, these devices provide superior environmental protection against moisture and UV radiation, while the ZnO varistor blocks instantly switch to a low-resistance state during surges to discharge current safely.

Technical Architecture
& Material Synergy

The convergence of semiconductor science and insulating engineering for maximum reliability.

01

ZnO Varistor Core

The heart of the arrester, utilizing non-linear resistance properties for rapid surge response.

▸Non-linear Response: Instant transition from high to low resistance during overvoltage.
▸Series Arrangement: ZnO blocks arranged in series to manage total rated voltage.
▸Minimal Leakage: High-resistance state under normal operation.
02

Polymer Housing

High-strength insulating exterior ensuring mechanical stability and environmental sealing.

▸UV Resistance: Optimized polymer blend to prevent degradation in sunlight.
▸Hydrophobic Surface: Reduces leakage current in humid or polluted areas.
▸Mechanical Rigidity: Withstands wind loads and seismic vibrations.
03

Sealing & Fittings

Ensuring an airtight internal environment to preserve the varistor elements.

▸Hermetic Seal: Prevents moisture ingress to protect ZnO blocks from oxidation.
▸Corrosion-Proof Fittings: High-grade galvanized metals for long-term outdoor use.
▸Reliable Grounding: Low-impedance connections to ensure rapid surge discharge.

Technical Performance
& Relative Evaluation

Comparative analysis of typical protective performance factors for high-voltage surge arresters.

Typical Component Weight Distribution

Relative Performance Factors

Technical Specifications
Performance Data

Detailed electrical parameters based on GB/T11032 and IEC60099-4 standards.

Type Code Rated Voltage (kV) MCOV (kV) In (kA) 8/20μs Residual (kV) 30/60μs Residual (kV)
YH10WX-72/200 72 58 10 200 170
YH10WX-90/235 90 72 10 235 200
YH10WX-96/250 96 75 10 250 213
YH10WX-102/266 102 79.6 10 266 226
Standard Housing Polymer UV-Stabilized Composite Hydrophobic Sealed
Application Transmission Distribution Substation Outdoor Industrial
Compliance GB/T11032 IEC60099-4 Verified Tested Certified
Customization Voltage Height Mounting Fittings Available

Real-World
Impact

Proven performance across diverse industries.

Mountainous Transmission Grid

High Altitude Environment

Deployment in regions with extreme temperature swings and high UV exposure requiring reinforced polymer housing.

Enhanced UV Protection:Verified
Flashover Incidents:Zero

Coastal Distribution Hub

High Salinity Environment

Implementation of hydrophobic composite walls to prevent salt accumulation and leakage currents.

Corrosion Resistance
Reduced Maintenance

Industrial Plant Substation

Switching Overvoltage Risk

Protection of critical transformers from frequent switching transients in a high-load manufacturing facility.

Equipment Safeguarding
Stable Operation

Regional Grid Expansion

Bulk Installation Project

Large-scale deployment requiring absolute consistency in MCOV and residual voltage parameters.

Parameter Consistency
Simplified Deployment

Industry
Applications

Tailored solutions for demanding environments.

OVERHEAD TRANSMISSION

Protection of long-distance transmission lines from lightning strikes via line-type installation.

SUBSTATION ENTRY

Shielding expensive transformer units from incoming surge transients from the external grid.

WIND FARM GRIDS

Protection for distributed generation points in remote, wind-exposed rural environments.

SOLAR ARRAY PROTECTION

Preventing inverter damage from atmospheric overvoltages in large-scale PV parks.

INDUSTRIAL PLANTS

Stabilizing power intake for precision manufacturing equipment in heavy industrial zones.

MUNICIPAL GRIDS

Securing urban distribution points against accidental surges and environmental factors.

Quality Assurance
& Export Standards

◈ Material Purity Control

Strict inspection of ZnO varistor powder and polymer resins to ensure high dielectric strength and non-linear performance.

◈ Process Standardisation

Advanced sintering and molding processes that meet standardized rigorous manufacturing protocols for each unit.

◈ Final Electrical Validation

100% testing of rated voltage and residual voltage to guarantee compliance with GB/T11032 and IEC60099-4.

Trust Verified

Our products undergo complete quality control systems and professional testing technologies.

✓ GB/T11032 Compliant
✓ IEC60099-4 Standard
✓ Quality Control Verified

Frequently Asked
Questions

Expert answers to common technical and commercial inquiries.

01

What is the function of the composite insulating wall?

The housing, where a composite wall is composed of an insulating material, provides electrical insulation and mechanical protection for the internal ZnO varistors, preventing environmental contamination and flashovers.

02

How do ZnO varistor blocks handle surge currents?

Under normal voltage, they act as insulators. When a surge occurs, they instantly switch to a low-resistance state, creating a safe path for the surge current to be discharged to the ground, protecting downstream equipment.

03

Which standards are these surge arresters compliant with?

Our products are fully manufactured and tested to meet the rigorous requirements of GB/T11032 and IEC60099-4 standards for high-voltage surge arresters.

04

Can these arresters be customized for specific voltages?

Yes, we provide custom configurations for rated voltage, MCOV, and housing heights to align with specific grid requirements and installation constraints.

05

How is the environmental durability ensured?

By using a composite wall is composed of an insulating material that is UV-stabilized and hydrophobic, our arresters resist corrosion and pollution in coastal or industrial areas.

06

What is the importance of residual voltage in selection?

Residual voltage determines the maximum voltage the protected equipment will experience during a surge. Selecting an arrester with a low residual voltage relative to the equipment's Basic Insulation Level (BIL) is critical.

Secure Your Grid Today

Contact our engineering team for a technical consultation and custom quote for your power protection needs.

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