Dunhuang anti sand and dust corrosion vacuum switchgear

2025-06-09 13:13:37

In high sand and dust prone areas such as deserts and Gobi, the anti-corrosion ability of Vacuum switchgear directly determines the lifespan of photovoltaic power plants.

1、 Core threat of sand and dust corrosion

Mechanical wear: Quartz sand (Mohs hardness 7) wears down the paint layer of the cabinet, accelerating metal corrosion. Electrochemical corrosion: Salt (NaCl content>3%) in sand and dust forms an electrolyte in a humid environment, causing pitting corrosion of the cabinet.Insulation failure: Dust accumulation causes creepage inside the cabinet (>5mm dust accumulation can cause 12kV equipment to flashover).

Implementation caseA 200MW photovoltaic power station in Dunhuang (with an average of over 120 days of sandstorms per year)

Problem: After 2 years of operation, the fault rate of circuit breaker mechanism jamming in traditional switchgear exceeds 30%.

Solution:Replace with customized sand proof vacuum switchgear (KYN28-12Z)

Key parameters:Protection level: IP6X (dustproof)+IPX5 (waterproof) Sealing pressure: 80Pa (positive pressure inside the cabinet) Surface treatment: Arc sprayed aluminum+RTV coatingeffect:3 years of zero institutional jamming failure 60% reduction in maintenance costs (compared to the original equipment)