FIELD: electrical engineering.
SUBSTANCE: present invention can be used in electrical engineering for supplying users with electricity without short-term drop in voltage. The device has a mains generator, thyristor switch, directional power relay, voltage relay and a unit for controlling state of the thyristor switch, which, if supply of electricity is interrupted, switch off emergency supply, leading to supplying the user with energy stored in reactive elements L and C, connected in parallel to the load and tuned to current resonance.
EFFECT: more reliable protection.
4 dwg
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