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10 kV Zinc Oxide Surge Arrester - Reliable Overvoltage Protection from China Suppliers and Factory
Product Overview
The 10 kV zinc oxide arrester (model 17/50) is a core protective device designed to shield various electrical systems from overvoltage damage. As a professional overvoltage protector, it plays a crucial role in ensuring the service life and operational reliability of key electrical equipment such as transformers, switches, capacitors, and motors. Its core function is to mitigate the risks posed by atmospheric overvoltage (e.g., caused by lightning strikes), operating overvoltage, and power frequency transient overvoltage (resulting from power system operational anomalies). By participating in the insulation coordination of electrical systems, this arrester effectively maintains the integrity and stable operation of power systems, railway electrification systems, and communication networks.
Product Performance
Excellent Core Material Performance
The core component is zinc oxide resistor sheet, which has outstanding nonlinear volt-ampere characteristics, laying a solid foundation for reliable operation.
Stable Normal Operation
Under normal conditions, the operating current is controlled at microampere level, ensuring no interference with the efficient operation of connected electrical equipment.
Rapid Overvoltage Response
It responds instantly to overvoltage. The current surges to thousands of amperes quickly, enabling rapid conduction and timely dissipation of overvoltage energy.
Reliable Protection Effect
It effectively suppresses overvoltage in time, avoiding damage to electrical equipment and ensuring the safe operation of the electrical system.
Applicable Scenarios
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Power Systems
Installed in substations, distribution networks, and power transmission lines to protect transformers, switches, mutual inductors, generators, and power cables.
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Railway Electrification Systems
Safeguards electrical components of railway power supply lines and locomotives, ensuring the stable operation of railway transportation.
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Communication Systems
Protects communication power supply equipment and signal transmission equipment from overvoltage damage, maintaining the smoothness of communication networks.
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Industrial & Commercial Buildings
Suitable for industrial and mining enterprises, high-rise buildings, and other places with 10 kV electrical systems that require overvoltage protection.
Frequently Asked Questions
Q What is a 10 kV zinc oxide arrester and what does model 17/50 mean?
A 10 kV zinc oxide arrester is an overvoltage protection device used in 10 kV electrical systems. The model designation "17/50" refers to the continuous operating voltage (17 kV) and the nominal discharge current or residual voltage rating (50 kA), indicating its specific electrical performance parameters and suitability for medium-voltage power applications.
Q What types of overvoltage can this arrester protect against?
The 10 kV zinc oxide arrester (model 17/50) is designed to protect against three main types of overvoltage: atmospheric overvoltage caused by lightning strikes, operating overvoltage generated during switching operations, and power frequency transient overvoltage resulting from abnormal conditions in the power system.
Q How does the zinc oxide resistor sheet work during normal and fault conditions?
Under normal operating conditions, the zinc oxide resistor sheet maintains an extremely high resistance, allowing only microampere-level leakage current to pass through — causing no disruption to connected equipment. When an overvoltage event occurs, the material's nonlinear volt-ampere characteristics cause resistance to drop sharply, allowing thousands of amperes of current to flow and dissipating the overvoltage energy rapidly.
Q In which industries and applications is this arrester most commonly used?
This arrester is widely used across multiple sectors including power utilities (substations and distribution networks), railway electrification systems, telecommunication infrastructure, industrial and mining enterprises, and high-rise commercial or residential buildings — anywhere a 10 kV electrical system requires reliable overvoltage protection.
Q What electrical equipment does this arrester protect?
The 10 kV zinc oxide arrester is designed to protect a wide range of electrical equipment, including transformers, circuit switches, capacitors, motors, mutual inductors (current and voltage transformers), generators, power cables, communication power supply equipment, and signal transmission devices.
Q What role does this arrester play in insulation coordination of electrical systems?
In insulation coordination, the arrester serves as the primary overvoltage limiting device. It defines the maximum overvoltage level that electrical equipment insulation must withstand, allowing engineers to design insulation systems more economically and reliably. By clamping overvoltage to safe levels, it ensures the long-term integrity and stable operation of the entire power system.
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