Detection of damages to a chain

Electric sockets

For protection of electric chains safety locks with knife contacts which color corresponds to current of protection of a safety lock are used. Serviceability of a safety lock is determined by presence of the wire conductor connecting contacts of a safety lock. For replacement of the failed safety lock previously switch off the corresponding electric chain, take a safety lock from a nest tweezers. If again established safety lock instantly fails when giving tension, check the protected electric chain. If the safety lock protects several chains, connect them serially that to determine a faulty chain by burn-out of a safety lock.