Product Overview
High VoltageSurge Arrester
Polymer Housed Metal Oxide Surge Arrester
A Surge Arrester is an essential protective device designed to protect electrical equipment from overvoltage caused by lightning strikes and switching operations. It helps safeguard transformers, switchgear, substations, transmission lines, and power distribution systems by limiting surge voltage and safely discharging surge current to ground.
Our surge arresters feature reliable electrical performance, durable insulation materials, and a compact design suitable for a wide range of power system applications.
Surge Arrester Overview
Reliable Overvoltage Protection for Power Systems
The Surge Arrester is designed to provide reliable protection against transient overvoltages in electrical power systems. Using advanced metal oxide varistor (MOV) technology, it responds rapidly to voltage surges and limits overvoltage to help protect connected electrical equipment.
Available in polymer-housed and other configurations, surge arresters can be used in medium-voltage and high-voltage applications, depending on the selected model and electrical ratings.
The polymer housing offers lightweight construction, good insulation performance, and resistance to outdoor environmental conditions. The gapless metal oxide design provides fast response and reliable overvoltage protection with minimal routine maintenance when properly selected and installed.
Designed for power generation, transmission, and distribution systems, the Surge Arrester helps improve equipment protection and overall power system reliability.
Key Features
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Reliable Overvoltage Protection
Limits transient overvoltages caused by lightning and switching operations.
Advanced MOV Technology
Provides fast response to voltage surges.
Durable Polymer Housing
Offers lightweight construction and outdoor weather resistance.
Gapless Design
Supports reliable protective performance without series spark gaps in applicable models.
Low Maintenance
Designed for long-term operation under specified service conditions.
Flexible Installation
Supports reliable protective performance without series spark gaps in applicable models.
Wide Application Range
Available for distribution, substation, transformer, and transmission line protection.
Customized Solutions
Voltage ratings, housing materials, creepage distance, and mounting accessories can be selected according to project requirements.
Surge ArresterTechnical Specifications
The following table lists the main parameters typically used to specify a surge arrester. Actual ratings depend on the selected model and system requirements.
| Parameter | Specification |
|---|---|
| Product Name | Surge Arrester |
| Product Type | Metal Oxide Surge Arrester |
| Design | Gapless MOV type, depending on model |
| Rated Voltage (Ur) | Available according to system requirements |
| Maximum Continuous Operating Voltage (Uc) | Customized according to system requirements |
| Nominal Discharge Current (In) | Common options include 5 kA and 10 kA; other ratings available by design |
| Housing Material | Silicone Rubber / Porcelain, depending on model |
| Installation Type | Outdoor / Indoor, depending on model |
| Applicable Frequency | 50 Hz / 60 Hz, subject to design |
| Applicable Standard | IEC 60099-4, where applicable |
| Mounting Method | Pole-mounted / Transformer-mounted / Substation-mounted, depending on model |
| Operating Environment | According to specified environmental conditions |
| Accessories | Mounting brackets, terminals, and optional accessories |
| Customization | Available according to project requirements |
Note: Confirm rated voltage, continuous operating voltage, residual voltage, energy capability, creepage distance, and short-circuit performance against the manufacturer’s approved datasheet before publishing final product specifications.
Working Principle of an Surge Arrester
The Surge Arrester uses nonlinear metal oxide varistor elements to control transient overvoltages.
Under normal operating voltage, the arrester presents high resistance and allows the electrical system to operate normally. When a lightning-induced or switching-induced voltage surge occurs, the arrester’s resistance decreases rapidly, providing a path for surge current to discharge to ground and limiting the voltage across protected equipment.
After the surge passes, the arrester returns to its high-resistance operating state.
Why Choose Our Surge Arrester
Flexible Product Solutions
Different equipment configurations, operating arrangements, and installation options can be provided according to application requirements.
Technical Documentation Support
Product specifications, drawings, and supporting documents can be provided according to the selected model and project requirements.
Application-Based Selection
Our team can review the intended application and technical requirements to help determine a suitable product configuration.
Project-Oriented Support
Our technical team can review project requirements and provide suitable equipment solutions for different power system applications.
Why Choose Our Surge Arrester?
Reliable protection solutions for power transmission and distribution systems.
Multiple voltage ratings and product configurations.
Durable insulation and housing options.
Technical support for product selection and project requirements.
Customization options for different installation environments.
Suitable solutions for domestic and international power engineering projects.
F.A.Q.
Supporting Subheading
A surge arrester protects electrical equipment against transient overvoltages caused by lightning and switching operations.
The terms are often used interchangeably. In power engineering, surge arrester is the more general term for a device that limits overvoltage surges.
IEC 60099-4 is a key standard for metal-oxide surge arresters used on AC power systems. The applicable edition and any additional standards should be confirmed for the selected product.
Yes. Models designed for outdoor use are available, with housing and insulation characteristics selected for the intended environment.
Selection depends on system voltage, maximum continuous operating voltage, grounding conditions, temporary overvoltage requirements, discharge current, protective level, energy capability, and installation environment.
Voltage ratings, housing options, mounting accessories, and other technical requirements may be customized according to the manufacturer’s available designs.
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Applications
Our high-voltage electrical equipment supports a wide range of power infrastructure projects, from substations and transmission networks to power generation and industrial electrical systems. Equipment selection and configuration depend on the specific application, system requirements, and technical ratings.
High-Voltage Substations
Designed for integration into high-voltage substation infrastructure, supporting power system operation and electrical equipment arrangements.
Power Transmission Networks
Suitable for high-voltage transmission infrastructure, supporting network operation and the integration of electrical equipment.
Power Generation Facilities
Applicable to power plant switchyards and grid connection infrastructure, subject to equipment specifications and project requirements.
Industrial Power Systems
Suitable for industrial substations and power infrastructure where high-voltage electrical equipment is required.