Fluke 434-II/435-II/437-II
Service Manual
4-14
Table 4-9. Accuracy Check of Voltage Channels A/L1, B/L2, C/L3
Set Calibrator to Readout at Voltage Channels
200 V, 50 Hz, OPR Fluke 434-II: 198.0 ... 202.0 V
Fluke 435-II /437-II: 199.60 ... 200.40 V
400 V, 50 Hz, OPR Fluke 434-II: 398.0 ... 402.0 V
Fluke 435-II /437-II: 399.60 ... 400.40 V
800 V, 50 Hz, OPR Fluke 434-II: 798.0 ... 802.0 V
Fluke 435-II /437-II: 799.20 ... 800.80 V
6. Set the Calibrator to STBY.
Optional Test. Bandwidth Check of Channel A/L1, B/L2, C/L3 (*):
7. Set the Calibrator to 215 V, 50 Hz and OPR.
8. Now check the voltage channels one by one. Use the Calibrator’s field edit function
(AMPL/FREQ key) to adjust the Calibrator to an Analyzer readout of 400.0 V /
215.00 V.
9. Increase the frequency to 3 kHz.
Fluke 434-II: check for a readout of 204.2 V or more.
Fluke 435-II/437-II: check for a readout of 204.25 V or more.
Check the channels according to the table below.
Table 4-10. Bandwidth Check of Voltage Channels A/L1, B/L2, C/L3
Voltage Channel to be verified Readout at 50 Hz (adjust
Calibrator with EDIT FIELD)
Readout at 3 kHz
A/L1 Fluke 434-II: 215.0 V
Fluke 435-II /437-II: 215.00 V
Fluke 434-II: ≥ 204.2 V
Fluke 435-II /437-II: ≥ 204.25 V
B/L2 Fluke 434-II: 215.0 V
Fluke 435-II /437-II: 215.00 V
Fluke 434-II: ≥ 204.2 V
Fluke 435-II /437-II: ≥204.25 V
C/L3 Fluke 434-II: 215.0 V
Fluke 435-II /437-II: 215.00 V
Fluke 434-II: ≥ 204.2 V
Fluke 435-II /437-II: ≥ 204.25 V
10. Set the Calibrator to STBY.
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 50 Hz / 200 V and then to OPR.
13. Fluke 434-II: check for a voltage readout V rms between 198.0 ... 202.0 V.
Fluke 435-II/437-II: check for a voltage readout V rms between 199.60 ... 200.40 V.
14. Check the 400 V range according to the table below.
To Next Page
Loading...
Need help?
General
