HANGZHOU HENMA ELECTRIC POWER TECHNOLOGY CO., LTD

Hangzhou Henma Power Technology Co., Ltd.

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Anti condensation sealing of a switchgear chassis in Jiangsu

Release time:

2020-02-09

At present, due to land occupation, line corridors, and urban beautification, cables are widely used in urban switching stations, residential distribution rooms, and substations. Cable trenches are built on both sides of urban main roads to solve the channel problem. However, due to the vertical and horizontal nature of the underground pipeline network, it is often difficult to achieve independent and enclosed cable trench channels. Due to various reasons such as rain, snow, leakage, and poor drainage, a large amount of sewage can accumulate in the cabinet. Due to the insufficient sealing of the cable inlet, the water vapor generated in the cable trench enters the switchgear, forming condensation inside the switchgear, leading to the occurrence of switchgear failures.

The water vapor entering the cable trench is one of the main reasons for condensation inside the switchgear. From the case taken over by Hemma, multiple switching stations, substations, and anti grid cabinets have encountered this problem. In response to the needs of the owners in Jiangsu, Hengma technicians went to seal the switchgear. For sealing cabinets like this, Henma technicians suggest using a BBS foaming agent. The benefits of this sealing method are simple, convenient, and fast, requiring only three steps:
1. Clean the cables and cabinets inside the switchgear
2. Use moisture-proof sealant to block the fine seams inside the cabinet body
3. Mix the materials in a certain proportion and pour them into the cabinet, allowing them to automatically level before expanding.