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BTK-126/252 Transformer Neutral Protection Device

BTK-126/252 transformer neutral auxiliary combination mainly includes the following equipmentsneutral disconnector; discharging clearance; zinc-oxide lightning arrester and current transformer for measuring discharging current ect . when transformer neutral point appear light-ning over-voltage, it has protective function when operating over-voltage and transient over-voltage. Lightning arrester undertakes lightning over-voltage protection, when the system occur single phase earthing fault and in the process of single phase close, horizontal stick should not discharge. The characteristic of compound clearance: when lightning over-voltage, lightning arrester operate,clearance doesn’t operate; on the condition of inner over-voltage, lightning arrester doesn’t operate, clearance operate.

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Service and Installation Conditions
Ambient temperature: -50~+50;
Altitude: within 2000m;
Wind pressure: within 700Pa;
Ice thickness: within20 mm;
Pollution class: class III and ;
Seismic intensity: Within 9 classes.
There should be no inflammable, explosive, corrosive and violent vibration in the mounting site.