UNI-T UT501 - UT501 Insulation Resistance Accuracy

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UT501/UT502 OPERATING MANUAL
B. UT501: Insulation Resistance Measurement
Output Voltage
Display Range
Open Circuit Voltage
Test Current
Short Circuit
Accuracy
250V
DC250V 10%
0.9mA~1.1mA @250k
500V
DC500V 10%
0.9mA~1.1mA @500k
1000V
DC1000V 10%
0.9mA~1.1mA @1M
Around less than 1.8 mA
3M to 99M : (3%+5)
100M ~ 2000M : (5%+5)
3M ~2000M
(When around less than 4.3M , test lead
insulation is bad or invalid, buzzer will beeps)