Surge Arrester Disconnector

Product Introduction:

The Surge Arrester Disconnector is a critical safety device integrated with surge arresters to ensure the reliable disconnection of an overloaded arrester from the electrical system. This device acts as a fail-safe mechanism, designed to separate the ground lead from the base of the surge arrester in the event of a fault, thereby preventing further damage and maintaining system integrity.

The disconnector shall break away automatically at the fault current while the surge arrester failure under the abnormal conditions and the failed lightning arrester will be separated.

Note:The last ‘L”in the designation means the disconnector.
L:With disconnector
No L:Without disconnector.

Structural Features:

1. Heat-Activated Separation: Equipped with a heat-activated mechanism that initiates disconnection when the temperature threshold is reached due to fault current.
2. Safety and Reliability: Ensures that the disconnector operates only under fault conditions and not during normal surge arrester operation.
3. Durable Construction: Built to withstand the mechanical and thermal stresses associated with electrical fault currents.
4. Easy Integration: Designed for compatibility with various surge arrester models, allowing for straightforward installation and integration.

How it works:

The arrester disconnector is a special device used to protect the arrester in the power system.
Its main function is to isolate the arrester from the system after the breakdown of the arrester, and maintain the normal working state of the system.
The working principle of the arrester disconnector can be summarized as follows:
1. Arc extinguishing effect: When the arrester breaks down, the arrester will produce an arc inside, and then the discharger will extinguish the arc through its own electrical and mechanical action. This prevents damage to the system from hysteresis or prolonged arcing.
2. Automatic isolation: the disconnector is equipped with an isolation switch inside. When the arrester breaks down, the disconnector will automatically cut off the connection with the system, so as to isolate the arrester and the system and protect the safe and stable operation of the system.
3. Anti-reclosing action: After the disconnector is detached, it can not only prevent the arrester from continuing to work, but also prevent the reclosing of the system. Because the breakdown of the arrester often leads to the instantaneous short circuit of the system, if the system is closed again before the arrester has not returned to normal, it will cause greater damage to the system.
4. Power saving effect: After the disconnector is detached, it means that the working state of the arrester returns to normal. This saves power and improves system efficiency.
To sum up, the role of the arrester discharger is to ensure the safety and stability of the power system, its working principle is to isolate the arrester and system through electrical and mechanical action, and prevent the re-closing of the system, so as to protect the safe and stable operation of the system and equipment.

Applicable Environmental Conditions:

1. Temperature Range: Capable of operating in a wide range of ambient temperatures, typically from -40°C to +60°C, suitable for diverse climates.
2. UV and Weather Resistance: Designed to resist ultraviolet radiation and other weather-related factors, ensuring long-term outdoor performance.
3. Chemical Exposure: Resistant to common environmental chemicals that could affect the disconnector’s performance.
4. Humidity Tolerance: Engineered to perform effectively in high humidity conditions, important for regions with high moisture levels.