| 摘要 |
FIELD: protective devices against electric shocks, intended for electrical installations rated at a voltage up to 1000 V. SUBSTANCE: the device for protective disconnection uses a switching device, actuator employing two voltage amplifiers and a voltage relay, three resistance asymmeters, four zero phase-sequence current filters with load resistors. The novelty is provision of the second voltage amplifier, two resistance asymmeters, three zero phase-sequence current filters with load resistors. The novelty is provision of the second voltage amplifier, two resistance asymmeters, three zero phase-sequence current filters with load resistors. EFFECT: enhanced functional reliability. 1 dwg |
