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.
Frequently Asked Questions
❓ What is the rated voltage of the 10 kV zinc oxide arrester (model 17/50)?
The model designation 17/50 indicates that the arrester has a continuous operating voltage of 17 kV and a nominal discharge voltage of 50 kA, making it specifically designed for use in 10 kV electrical systems.
❓ What types of overvoltage can this arrester protect against?
This arrester is designed to mitigate three main types of overvoltage: atmospheric overvoltage caused by lightning strikes, operating overvoltage generated during switching operations, and power frequency transient overvoltage resulting from system operational anomalies.
❓ How does the zinc oxide resistor sheet contribute to the arrester's performance?
The zinc oxide resistor sheet is the core component of the arrester. It exhibits outstanding nonlinear volt-ampere characteristics, meaning it maintains a very high resistance under normal operating conditions (limiting leakage current to the microampere level) while rapidly switching to low resistance to discharge surge currents during overvoltage events.
❓ Is the 10 kV zinc oxide arrester suitable for outdoor installation?
Yes. This arrester is engineered for robust performance in various environmental conditions and is commonly installed in outdoor substations, distribution networks, and along power transmission lines, in addition to indoor applications such as industrial facilities and high-rise buildings.
❓ What electrical equipment does this arrester protect?
The arrester provides comprehensive protection for a wide range of electrical equipment, including transformers, switches, capacitors, motors, mutual inductors, generators, power cables, communication power supply equipment, and signal transmission equipment across power, railway, and communication systems.
❓ How does the arrester help with insulation coordination in electrical systems?
By clamping overvoltages to safe levels and dissipating surge energy rapidly, the arrester plays a key role in insulation coordination. It ensures that the voltage stress experienced by insulation components across the system remains within acceptable limits, thereby extending equipment lifespan and maintaining system stability.