Lightning arrester introduction: An appliance used to p […]
Lightning arrester introduction:
An appliance used to protect electrical equipment from high transient overvoltage hazards during lightning strikes, and to limit freewheeling time, and often limits freewheeling. Lightning arresters are sometimes referred to as overvoltage protectors, overvoltage limiters.
High transient, over voltage, electrical, lightning protection
Scope of application:
The AC gapless metal oxide arrester is used to protect the insulation of the AC power transmission and transformation equipment from lightning overvoltage and operating overvoltage. Suitable for overvoltage protection of transformers, transmission lines, power distribution panels, switch cabinets, power metering boxes, vacuum switches, shunt compensation capacitors, rotating electrical machines and semiconductor devices.
Features and principles:
The AC gapless metal oxide arrester has excellent nonlinear volt-ampere characteristics, good response characteristics, no freewheeling, large flow capacity, low residual voltage, strong overvoltage suppression, pollution resistance, anti-aging, and freedom from altitude. The structure is simple, no gap, strict sealing and long life.
The arrester exhibits a high resistance state under the normal system operating voltage, and only the micro-ampere current passes. It exhibits low resistance under the action of overvoltage and large current, which limits the residual voltage at both ends of the arrester.
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