FIELD: electrical engineering.
SUBSTANCE: proposed differential device that can be used in protective gear of electrical apparatuses and installations of single-phase supply mains with leads insulated from ground and in three-phase (multiphase) insulated-neutral supply mains has supply mains generator, final element, load, and measuring circuit incorporating ground fault detection unit.
EFFECT: simplified design, improved metrological characteristics, and enhanced reliability of device.
1 cl, 1 dwg
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|---|---|---|---|
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