Verification Of Voltage Inputs In 230 V Range - Fluke 435-II Service Manual

Accuracy Check of Channel N (Neutral):
11. Connect the N input with the C/L3 input (See Figure 4-4). A/L1, B/L2, C/L3 now
give zero reading.
12. Set the Calibrator to 60 Hz / 60 V and then to OPR.
13. Fluke 434-II: check for a voltage readout V rms between 59.4 ... 60.6 V.
Fluke 435-II/437-II: check for a voltage readout V rms between 59.88 ... 60.12 V.
14. Check the 120 V range according to the table below.
Table 4-5. Accuracy Check of Voltage Channel N (Neutral)
Set Calibrator to
60 V, 60 Hz, OPR
120 V, 60 Hz, OPR
240 V, 60 Hz, OPR
15. Set the Calibrator to STBY.
Optional test. Bandwidth Check of Channel N (*):
16. Set the Calibrator to 120 V, 60 Hz and OPR.
17. Now check the voltage channel N. Use the Calibrator's field edit function
(AMPL/FREQ key) to adjust the Calibrator to an Analyzer readout of 120.0 V /
120.00 V.
18. Increase the frequency to 3 kHz.
Fluke 434-II: check for a readout of 114.0 V or more.
Fluke 435-II/437-II: check for a readout of 114.00 V or more.
19. Set the Calibrator to STBY.

4.8.3 Verification of voltage inputs in 230 V range

Accuracy Check of Channel A/L1, B/L2, C/L3:
1. Set the Analyzer to 230 V, 50 Hz nominal (SETUP menu, arrow and ENTER keys).
Press MENU, select Volts/Amps/Hertz, press F5 - OK.
2. To check the A/L1, B/L2, C/L3 inputs: connect the N input to Ground (See Figure 4-
3).
3. Set the Calibrator to 50 Hz, 115 V and then to OPR.
4. Fluke 434-II: check for a voltage readout V rms between 113.8 ... 116.2 V.
Fluke 435-II/437-II: check for a voltage readout V rms between 114.77 ... 115.23 V.
5. Check the 230 V range according to the table below.
Readout at Voltage Channel N
Fluke 434-II: 59.4 ... 60.6 V
Fluke 435-II /437-II: 59.88 ... 60.12 V
Fluke 434-II: 119.4 ... 120.6 V
Fluke 435-II /437-II: 119.88 ... 120.12 V
Fluke 434-II: 239.4 ... 240.6 V
Fluke 435-II /437-II: 239.88 ... 240.12 V
Performance Verification
4.8 Voltage Inputs
4
4-11