27
Megohmmeter Models 6528/6529
6.5 Insulation Resistance Specification
Measurement range:
0.01MΩ to 10GΩ
Test voltages:
Model 6529: 50, 100, 250, 500, 1000V
Model 6528: 250, 500, 1000V
Test voltage accuracy:
+25%, 0%
Nominal current:
1mA
Auto discharge:
Discharge time 2s for C=2µF
Live circuit detection:
Inhibit test if terminal voltage >30V prior to initialization
of test
Maximum capacitive load:
2µF at nominal voltage and nominal current.
Output
Voltage
Range
Display Range
Resolution
Test current
Uncertainty
±(% of reading
+ Digits)
50V*
(0% to +25%)
4MΩ
0.01 to
4.000MΩ
0.001MΩ
1mA @ 50kΩ
±(3%+10cts)
40MΩ
3.60 to
39.99MΩ
0.01MΩ
400MΩ
36.0 to
399.9MΩ
0.1MΩ
100V*
(0% to +25%)
4MΩ
0.020 to
4.000MΩ
0.001MΩ
1mA @
100kΩ
40MΩ
3.60 to
39.99MΩ
0.01MΩ
400MΩ
36.0 to
399.9MΩ
0.1MΩ
250V
(0% to +25%)
4MΩ
0.050 to
3.999MΩ
0.001MΩ
1mA @
250kΩ
±(1.5%+10cts)
40MΩ
3.60 to
39.99MΩ
0.01MΩ
400MΩ
36.0 to
399.9MΩ
0.1MΩ
4GΩ
360 to
3,999MΩ
1MΩ
±(4%+10cts)
500V
(0% to +25%)
4MΩ
0.100 to
3.999MΩ
0.001MΩ
1mA @
500kΩ
±(1.5%+10cts)
40MΩ
3.60 to
39.99MΩ
0.01MΩ
400MΩ
36.0 to
399.9MΩ
0.1MΩ
4GΩ
360 to
3,999MΩ
1MΩ
±(4%+10cts)
1000V
(0% to +25%)
40MΩ
0.20 to
39.99MΩ
0.01MΩ
1mA @ 1MΩ
±(1.5%+10cts)
400MΩ
36.0 to
399.9MΩ
0.1MΩ
4GΩ
360 to
3,999MΩ
1MΩ
±(4%+5cts)
10GΩ
3.60 to 9.99GΩ
.01GΩ
±(10%+10cts)
Capacitance in parallel:
<1nF
External voltage in series: 0.0V
Common mode voltage: 0.0V
* Model 6529 only
