GB/T 18216.3-2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. -Equipment for testing, measuring or monitoring of protective measures- Part 3: Loop impedance (English Version)
The requirements specified in this part of GB/T 18216 apply to the equipment for measuring the loop impedance between the phase conductor and the protective conductor or between the conductor and the neutral conductor or between two phase conductors by applying voltage drop to the circuit under test.
GB/T 18216.3-2007 history
2021GB/T 18216.3-2021 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.—Equipment for testing, measuring or monitoring of protective measures—Part 3: Loop impedance
2012GB/T 18216.3-2012 Electrical safety in low voltage distribution systems up to 1000V a.c. and 1500V d.c..Equipment for testing,measuring or monitoring of protective measures.Part 3:Loop impedance
2007GB/T 18216.3-2007 Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. -Equipment for testing, measuring or monitoring of protective measures- Part 3: Loop impedance