... wind electricity methane interlock PurposeBXB- /3300(1140,660)Y series apply to low-voltage protection box containing methane gas and coal dust mixed ... atresia, overvoltage, under voltage, tripping and other backup protection;Protect me divided into two loops bilateral likely to meet ... Data Rate voltage (V)1140(660)3300 Rated current(A)1200,1000,800,630,500,400 800,630,500,400Rated frequency(Hz ...