ZBZ-4.0/1140(660)Z Mine explosion proof transformer for coal electric drill for remote starting or stopping the electric drill

ZBZ-4.0/1140(660)Z Mine explosion proof transformer for coal electric drill

1. The device is used for the remote control and protection of short circuit, overload and leakage of 127V 1.2KW portable electric coal drill in the coal mine.

2. Technical data:

    Rated voltage (V): 1140(660)/133

                                  660(380)/133

    Rated current ( A ) : 1.27(2.19)/10.85

                                     2.19(3.79)/10.85

3. Drill power : 1.2KW

4. Resistance tripping value of leakage: 3KΩ

5. Leakage tripping time: ≤0.25s

6. Protected distance of short circuit: 0-300m