#774305
How is to check the circuit phase — zero in electrical installations up to 1 kV with the TN?
Варианты ответа:
  • Direct current measurement single-phase short circuit on the case
  • Direct current measurement single-phase circuit to a zero protective conductor
  • Measurement of impedance of the circuit phase — zero protective conductor with subsequent calculation of current single-phase circuit
  • Any of the following methods
Тематика: Основы безопасности жизнедеятельности Основы безопасности жизнедеятельности (ОБЖ) Основы электробезопасности
Курсы в категории: Безопасность и правопорядок
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