Performance Verification
4.7. Verification of Current Inputs 4
4-7
9. Press
SETUP
. Then press F4 – MANUAL SETUP and use arrow keys and ENTER
key to set the Analyzer to Current Clamp sensitivity (Phase and Neutral: select with
F4) to 1 mV/A, 100 A, x10 AC only, 1:1.
10. On the Analyzer press MENU, select Volts/Amps/Hertz, press F5 – OK to enter the
function.
11. Set the Calibrator to 100 mV, 60 Hz and OPR.
12. Use the up/down arrow keys to get A rms readout in the screen area. Check for an A
rms readout between 99.0 ... 101.0 A (tolerance 0.5 + 0.5 A = 1.0 A).
4.7.3 Bandwidth check of current channels (*)
Is an optional test. Proceed as follows:
1. Set the Calibrator to 100 mV, 60 Hz and OPR.
2. The current channels must be checked one by one. Use the Calibrator’s edit field
function (AMPL/FREQ key) to adjust a readout of 1000 A for the current channel to
be checked.
3. Increase the frequency to 3 kHz. Check for a readout of 94.5 A or more (table 4-1).
Table 4-1. Bandwidth Check of Current Channels (x10, AC only)
Current Channel to be verified Readout at 60 Hz (adjust
Calibrator with EDIT FIELD)
Readout at 3 kHz
A/L1 100.0 A 94.5 A or more
B/L2 100.0 A 94.5 A or more
C/L3 100.0 A 94.5 A or more
N 100.0 A 94.5 A or more
4. Set the Calibrator to STBY.
5. Press
SETUP
. Then press F4 – MANUAL SETUP and use arrow keys and ENTER
key to set the Analyzer to Current Clamp sensitivity (Phase and Neutral: select with
F4) to 1 mV/A, 1000 A, x1 AC + DC, 1:1.
6. The current channels must be checked one by one.
Set the Calibrator to 1 V, 60 Hz. Use the Calibrator’s edit field function
(AMPL/FREQ key) to adjust a readout of 1000 A for the current channel to be
checked.
7. Increase the frequency to 3 kHz. Check for a readout of 945 A or more (table 4-2).
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