The DW15 series all-powerful type chopper(as follows brief name chopper) is applicable to exchanges 50 Hz, sum settle the electric current is to the 6300 A, the sum settle work electric voltage to the go together with of the 1140 V(hull grade sum settle the electric current 630 A) or the 380 V(hull grade sum settle the electric current 1600 AN and above) charged barbed wire net net and use to the allotment electric power and the power supply circuit and the power supply equipments of lead carry, owe electric voltage, short-circuit proof it use.The hull grade sum settle the chopper of the electric current 630 AN an ability to also provide to make electric motor in the exchanges the 50 Hz, 380 V the network of lead carry, owe electric voltage and short-circuit proof.