I am a factory electrician, I would like to ask, how to control the total power switch?
Mainly at work time the whole plant of the total power open, when the whole plant power supply automatically shut down. (To prevent accidental leakage accident occurred)
The total power of the plant is about 200-300kw
I used it on some lines
Time control switch + contactor control circuit in the working hours of electricity, power off time.
But I do not know whether the time control switch can control 300kw such a large contactor,
And whether my current approach is the best way, is there any other way?
We are closing the total power when we leave. And each time to check whether the electrical equipment are all closed. And then closed. (Which is required by the Code of Practice for Electrical Safety) is usually the responsibility of the team leader to shut down their own team power, if not a direct fine. As an electrician, some things can not be simplified, unless you can have security risks are avoided, in order to achieve automation. But the cost of your transformation is quite scary!
First: total electricity generally does not allow frequent switching.
The second time you can determine the set time and work time match? How are you sure that all the devices are off?
If not shut down, there have been such as: computer control program equipment, suddenly lost power, it may make the system crash. Can you recover in time? Someone in overtime, there are pneumatic components equipment, workers are operating, suddenly power, pneumatic equipment wounding how to do?
Brothers, so insecure! It is recommended not to do so. But also out of responsibility for production and safety.
