Insulation Multimeters
Electrical Specifications
9
Continuity Test
Continuity Indication ........................................... Continuous audible tone for test resistance below 25 Ω and off above
100 Ω. Maximum Reading; 1000 Ω
Open Circuit Voltage ........................................... <8.0 V
Short Circuit Current ........................................... 1.0 mA typical
Overload Protection ............................................ 1000 V rms
Response Time ................................................... >1 m sec
Frequency Measurement (all 1587 models)
Range Resolution
Specification ±(% of Rdg + Counts)
99.99 Hz 0.01 Hz
±(0.1 % + 1)
999.9 Hz 0.1 Hz
±(0.1 % + 1)
9.999 kHz 0.001 kHz
±(0.1 % + 1)
99.99kHz 0.01 kHz
±(0.1 % + 1)
Frequency Counter Sensitivity (all 1587 models)
Input Range
V ac Sensitivity (RMS Sine Wave)
[1]
DC Trigger Levels
[1]
to 20 kHz
[2]
5 Hz to 20 kHz 20 kHz to 100 kHz
600.0 mV ac 100.0 mV 150.0 mV na
6.0 V 1.0 V 1.5 V -400.0 mV and 2.5 V
60.0 V 10.0 V 36.0 V 1.2 V and 4.0 V
600.0 V 100.0 V - 12.0 V and 40.0 V
1000.0 V 300.0 V - 12.0 V and 40.0 V
[1] Maximum input for specified accuracy = 10x range (1000 V max). Noise at low frequencies and amplitudes may affect accuracy.
[2] Usable to 100 kHz with full scale input.
Capacitance (all 1587 models)
Range Resolution
Specification ±(% of Rdg + Counts)
1000 nF 1 nF
±(1.2 % + 2)
10.00 μF 0.01 μF
100.0 μF 0.1 μF
±(1.2 % ±90)
9999 μF 1 μF
Temperature Measurement (all 1587 models)
Range Resolution
Specification
[1]
±(% of Rdg + Counts)
-40 °
C to 537 °
C 0.1 °C ±(1 % + 10)
-40 °
F to 998 °
F 0.1 °F ±(1 % + 18)
[1] Specifications apply following 90 minutes settling time after a change in the ambient temperature of the instrument.
Insulation Test
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
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