FIELD: electricity.
SUBSTANCE: four resistors and test instrument are introduced into electric power distribution system comprising power supply unit, hardware power supply circuit switches connected to power supply unit buses and hardware power supply circuit switch control unit, power supply unit buses being linked with instrument input 1 and item housing ("grounding") via resistor 1 and 2, with the second instrument input connected with power supply unit buses via resistor 3 and 4 with equal nominal value.
EFFECT: improvement of system serviceability by ensuring insulation resistance control in electric power distribution system and hardware fed by system.
1 dwg
