User Manual

Insulation Multimeters
Specifications
31
1577 Accuracy
Range Resolution
50 Hz to 60 Hz
± (% of Rdg + Digits)
600.0 mV 0.1 mV + (2 % + 3)
6.000 V 0.001 V + (2 % + 3)
60.00 V 0.01 V + (2 % + 3)
600.0 V 0.1 V + (2 % + 3)
1000 V 1 V + (2 % + 3)
AC Conversion ....................................................Inputs are ac-coupled and calibrated to the rms value of sine wave input. Conversions are
true-rms responding and specified from 5 % to 100 % of range. Input signal crest factor
can be up to 3 at full scale up to 500 V, decreasing linearly to crest factor <= 1.5 at
1000 V. For non-sinusoidal waveforms add ± (2 % reading + 2 % FS) typical, for a crest
factor up to 3.
Input Impedance..................................................10 MΩ (nominal), <100 pF, ac-coupled
Common Mode Rejection Ratio
(1 kΩ unbalanced)...............................................>60 dB at dc, 50 or 60 Hz
Overload Protection.............................................1000 V rms or dc, 10
7
V Hz Max
DC Voltage Measurement
Range Resolution
Accuracy 1587
1
± (% of Rdg + Digits)
Accuracy 1577
1
± (% of Rdg + Digits)
6.000 V dc 0.001 V + (0.09 % + 2) + (0.2 % + 2)
60.00 V dc 0.01 V + (0.09 % + 2) + (0.2 % + 2)
600.0 V dc 0.1 V + (0.09 % + 2) + (0.2 % + 2)
1000 V dc 1 V + (0.09 % + 2) + (0.2 % + 2)
1. Accuracies apply to ± 100% of range.