FIELD: electricity.
SUBSTANCE: invention relates to electrical engineering and may be used for automatic switch testing. The new feature of the switch testing method ensuring the given current supply is a reduction of current value or blocking converter by a signal proportional to voltage changing speed at the moment of power contacts disconnection. The above actions are due to the signal proportional to the speed of voltage changing on contacts, when switch opens (1) or switch contact block opens (1).
EFFECT: fast speed of operation.
4 cl, 4 dwg
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