Test principle of insulation resistance?
Effect of the amount of benchmark working conditions note the environment temperature is 23 DEG + 1 DEG -10 to 40 DEG C - 40% ~ 60% < wet environment Du 80%---- instrument working voltage of 9V + 0.1V9V + 1.5V---- auxiliary grounding resistance value is lower than 100 Omega Omega rC, rP < 30K < 20V---- without interference voltage without disturbing current < 2A---- R measuring electrode spacing of a > 5da > 5d---- p electrode spacing a > 20ha > 20h----
General specification for 234 wire measurement of grounding resistance and soil resistivity; grounding voltage, AC voltage measurement power DC (9V R14S 1.5V 6 zinc manganese dry battery, standby 300 hours of continuous range) grounding resistance: 0 ohm to 30.00k ohm resistivity: 0 ohm m ~ 9000k Omega m measurement precision, line 4 the 3 line measurement, simple 2 line measurement of grounding resistance measuring methods of grounding resistance: rated current of variable polarity current measurement method, 20mA Max
