95x Series Operating Manual - May 17, 2022
Page
87
of
155
The total test time is nominally 0.3 seconds, which could be reduced to 0.15 second with ease.
SPECIFICATIONS
Specifications are valid at the 95x terminals for 1 year at ambient temperatures within ±5C of calibration
temperature (add 5% of accuracy specification per C outside of this). All specifications are relative to the
calibration standards used. Add ½ digit to all accuracies for displayed results (results available with enhanced
resolution from interfaces).
TEST CURRENT SOURCE
The following apply at the SOURCE terminals.
Test Current Range
0.100 to 40.000Arms
Test Current Accuracy
<(±0.5% ± 0.005A ± 0.005% per Hz above 100Hz) accuracy
Test Current Overshoot
<10% (<0.2s ramp time)
<5% (<0.5s ramp time)
<2% (>0.5s ramp time)
Settling to <±0.5% of final value in <0.1sec + 2 cycles
Test Frequency
40Hz to 500Hz
<0.1% accuracy
Test Waveform
Sinewave, 1.3
–
1.5 Crest Factor
Compliance
(8Vrms
–
0.015V/A) max compliance at test frequencies <75Hz.
For line voltages below 115V linearly reduce the maximum compliance by 1%/V
unless Opt. LOLINE is fitted (there is no reduction for Opt. LOLINE).
Loading
10ohm max impedance (any phase, within compliance limits)
250W maximum load power
VOLTAGE MEASUREMENTS
The following apply at the SENSE terminals.
Range
0uV to 8.0000Vrms (RMS, In-phase and quadrature)
Accuracy
<(±0.5% ± 30uV ± 0.5uV*A) accuracy
(add 0.005% + 0.05uV*A per Hz above 100Hz)
<±0.005° per Hz phase relative to test current
Cable Compensation
<(1% of error)
IMPEDANCE MEASUREMENTS
Accuracy
Add Test Current and Voltage Accuracies as percentages
Examples at 50 or 60Hz -
0.1ohm at 1A : 1% + 0.53% = 1.53%
0.1ohm at 10A : 0.55% + 0.5% = 1.05%
0.1ohm at 40A : 0.51% + 0.5% = 1.01%
0.01ohm at 1A : 1% + 0.8% = 1.8%
0.01ohm at 10A : 0.55% + 0.53% = 1.08%
0.01ohm at 40A : 0.51% + 0.51% = 1.02%
0ohm at 1A : 30.5uohm
