Remote/local control of electrical equipment
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1. Is the remote/local control of the unit entirely dependent on remote/local switches to switch the circuits? 2. Is the same contactor used for remote/local control startup?
1. Yes. In conventional designs, the selector switches for remote and local control are usually located on the control cabinet. Then operate the corresponding start or stop switch according to the indications of the selector switch. Control the start and stop of the unit. 2. They share the same contactor.
All our manual/automatic conversion switches are installed in the on-site control box (operation panel). 2. Look at the drawings once or twice; they are exactly the same each time. The difference in the second case is merely physical; in principle, control from both locations is exactly the same.
1. Is the remote/local control of the unit entirely dependent on remote/local switches to switch the circuits? That’s generally how we do it. 2. Is the same contactor used for remote/local control startup? One is enough; of course, if there are many contacts, using an intermediate relay is also an option.