LineType Metal Oxide Surge Arrester China Factory and Suppliers
Shaanxi Oumude Electronics Co., Ltd.
Address：
No. 327, Yao Si Road, High-tech Zone, Han Cheng City, Weinan City, Shaanxi Province, China
Description
Description
The Line-Type Metal Oxide Surge Arrester is a mission-critical protective component engineered for high-voltage transmission and distribution networks. Designed to safeguard expensive electrical infrastructure from catastrophic damage caused by lightning strikes and switching overvoltages, these arresters are strategically deployed along overhead lines, near substations, and at critical grid nodes to maintain overall system stability and insulation integrity.
Utilizing advanced Zinc Oxide (ZnO) varistor technology, the device operates as a high-resistance insulator under normal voltage conditions to minimize leakage current. However, upon detecting a voltage surge, the ZnO elements instantaneously transition to a low-resistance state, creating a safe, low-impedance path to discharge surge currents directly to the ground, thereby ensuring the continuous and safe operation of modern power grids under extreme environmental conditions.
Detailed Parameters
| Rated Voltage (kV) | 72 / 90 / 96 / 102 | MCOV (kV) | 58 / 72 / 75 / 79.6 |
|---|---|---|---|
| Nominal Discharge Current In (kA) | 10 | Steep Current Residual Voltage (1/10μs) | ≤ 164 / 193 / 200 / 213 kV |
| Lightning Impulse Residual Voltage (8/20μs) | ≤ 200 / 235 / 250 / 266 kV | Switching Impulse Residual Voltage (30/60μs) | ≤ 170 / 200 / 213 / 226 kV |
| Rectangular Current Wave (2ms) | 600 A | Repetitive Charge Transfer Qrs (C) | 1.2 C |
| High Current Impulse (4/10μs) | 100 kA | Compliance Standards | GB/T11032 & IEC60099-4 |
Key Advantages
Superior Protection
Provides instantaneous response to lightning and switching surges, shielding transformers and grid equipment from overvoltage damage.
Rapid Response Time
ZnO varistor blocks ensure a near-instantaneous transition from insulating to conducting state during surge events.
International Standards
Fully compliant with GB/T11032 and IEC60099-4, ensuring global reliability and technical performance.
Robust Construction
High-strength porcelain or polymer housing provides exceptional mechanical stability and insulation.
Environmental Resilience
Engineered to withstand extreme UV radiation, moisture, and heavy pollution in harsh outdoor environments.
Precise Quality Control
Manufactured using standardized processes and professional testing technologies for zero-defect performance.
Product Gallery
Management Platforms
Inventory Management
Real-time tracking of surge arrester stock levels to ensure rapid deployment for grid emergencies.
Production Monitoring
Strict adherence to standardized manufacturing processes for every ZnO varistor element.
Quality Assurance
Comprehensive testing protocols to verify residual voltage and discharge current performance.
Compliance Tracking
Digital documentation ensuring all units meet IEC60099-4 and GB/T11032 certifications.
Logistics Optimization
Secure packaging and specialized transport to maintain the integrity of porcelain housings.
Life-cycle Analysis
Monitoring degradation and performance trends to optimize maintenance intervals.
Investment Return Comparison
| Metric | Standard Arresters | Oumude Superpower Arrester |
|---|---|---|
| Equipment Downtime | High Risk of Failure | Significantly Reduced |
| Installation Life | Moderate (3-5 Years) | Extended (10+ Years) |
| Maintenance Cost | Frequent Inspections | Low Maintenance Need |
| System Reliability | Standard Protection | Enhanced Grid Stability |
| Replacement ROI | Periodic & Costly | High Long-term Value |
Frequently Asked Questions
Q: What is the primary function of a Line-Type Metal Oxide Surge Arrester?
Its primary function is to protect high-voltage transmission equipment from overvoltage transients caused by lightning or switching operations by diverting the surge current safely to the ground.
Q: How does the ZnO varistor technology work in these arresters?
Zinc Oxide (ZnO) varistors exhibit a non-linear voltage-current characteristic; they maintain high resistance at normal operating voltages but switch instantly to low resistance when a voltage spike occurs.
Q: Which international standards do these products comply with?
Our arresters are fully manufactured and tested to meet the rigorous requirements of IEC60099-4 and GB/T11032 standards.
Q: Can these arresters be used in highly polluted environments?
Yes, the external housing (porcelain or polymer) is specifically designed to provide superior environmental protection against moisture, salt spray, and industrial pollution.
Q: What is the difference between MCOV and Rated Voltage?
MCOV (Maximum Continuous Operating Voltage) is the maximum voltage the arrester can withstand continuously, while Rated Voltage is the maximum permissible temporary overvoltage.
Q: Where should the line-type surge arrester be installed?
They should be installed as close as possible to the equipment they are protecting, typically along overhead transmission lines or near transformer terminals.
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