User Manual
1587 FC/1587/1577 
Users Manual 
40 
Insulation Specifications 
Measurement Range 
Model 1587, 1587 FC ................................. 0.01 MΩ to 2 GΩ 
Model 1577 ................................................. 0.1 MΩ to 600 MΩ 
Model 1587T ............................................... 0.01 MΩ to 100 MΩ 
Test Voltages 
Model 1587, 1587 FC ................................. 50, 100, 250, 500, 1000 V 
Model 1577 ................................................. 500, 1000 V 
Model 1587T ............................................... 50, 100 V 
Test Voltage Accuracy ........................................ +20 %, -0 % 
Short-Circuit Test Current ................................... 1 mA nominal 
Auto Discharge ................................................... Discharge time <0.5 second for C = 1 μF or less 
Live Circuit Detection .......................................... Inhibit test if terminal voltage > 30 V prior to initialization of test 
Maximum Capacitive Load ................................. Operable with up to 1 μF load 










