Sealing Measures Are Used To Prevent Dust From Entering The Surge Arrester

Particulate matter in industrial environments poses a hidden threat to high-voltage power equipment. As a core component of power grid protection, the operational stability of the 33kv surge arrester price is directly related to the safety of the entire line. During routine inspections, we have found that even minute impurities in the environment, if they enter the equipment casing, can significantly alter the internal electric field distribution and even induce flashover accidents.

Core sealing requirements

Dust must be prevented from entering the interior of 400 kv lightning arrester; this is the bottom line for maintaining the insulation performance of the equipment. Because metal oxide valve plates have extremely high requirements for environmental cleanliness, even the smallest solid particle deposit can form a conductive path.

• Sealing Ring Condition Inspection: Regularly inspect the sealing rings at the connection between the base and the porcelain bushing; aging rubber is prone to cracking.

• Pressure Relief Device Inspection: Observe whether the pressure relief explosion-proof membrane is intact; cracks are the main path for particulate matter to enter.

• Lead Terminal Reinforcement: Check the tightness of the top terminals; loosening will compromise the overall negative pressure sealing environment.

Insulation performance monitoring

The combined effect of external contamination and internal dust accumulation accelerates the degradation of 66 kv lightning arrester. By testing leakage current under live conditions, the severity of internal moisture or dust accumulation can be directly assessed. An abnormal increase in the resistive current component often indicates that the surface of the internal insulation components is no longer clean.

Maintaining the cleanliness of the 66kv surge arrester external insulation components is equally important, as this reduces the impact of surface creepage on the internal potential distribution. In dusty industrial areas, increasing cleaning frequency and combining it with infrared thermal imaging detection are professional methods for identifying potential hazards.