After the circuit breaker is disconnected after a power failure, the load-side isolating switch must be opened first instead of the bus-side isolating switch. There may be two kinds of misoperations during a power outage. Although the plate-type feeding machine has been disconnected, the disconnection switch has a wrong jaw when pulling it. The distance between the type crusher and the disconnect switch of the line that should not be cut off;
For the refueling of the shearing machine, buy a filling of light steam, connect the steam inlet on the light cylinder to the light steam filling pipe, open the respective valves, and remember to look at the pressure gauge of the light steam of the shearing machine. The size of the pressure explosion-proof reciprocating coal feeder is subject to the manufacturer's instructions, and the valve is closed after the force of the explosion-proof reciprocating coal feeder is reached.
Assuming that the circuit breaker is not disconnected, first pull the load-side isolating switch, the arc short circuit occurs within the protection range of the circuit breaker, and the circuit breaker trips, the CNC bending machine can cut off the fault and reduce the scope of the accident.
Dust-proof vibrating screen material blocking device in front of the shearing machine. It includes a fixed frame located in front of the shearing machine, on the frame is a front and rear guide rail, on the guide rail is seated a material rack that can move forward and backward; a servo motor, servo motor is also installed on the frame A lead screw parallel to the direction of the guide rail is driven by a timing belt wheel, and the nut matched with the lead screw glass fiber reinforced plastic diagonal flow fan is fixedly connected to the above-mentioned material carrier powder vibration feeder; on the material-bearing TD bucket-type lifting frame , There are also several positioning pieces.
If the bus-side isolation switch is pulled first, the arc short circuit occurs outside the protection range of the line circuit breaker, and the faulty electric impeller feeder flow caused by misoperation does not pass through the current transformer, and the line breaker activation coal feeder protection does not operate. The circuit breaker will not trip, which will cause a short circuit of the bus and cause the upper-level circuit breaker to malfunction, which will expand the scope of the accident.
