Fluke 433 - Page 36

Fluke 433, 434, 435
Service Manual
3-12
13. Fluke 433/434: check for a voltage readout V rms between 0.0 ... 1.2 V.
Fluke 435: check for a voltage readout V rms between 0.00 ... 0.23 V.
14. Check the 230 V range according to the table below.
Table 3-7. Accuracy Check of Voltage Channel N (Neutral)
Set Calibrator to Readout at Voltage Channel N
0 Hz, 0 V, OPR Fluke 433/434: 0.0 ... 1.2 V, Fluke 435: 0.00 ... 0.23 V
115 V, 50 Hz, OPR Fluke 433/434: 113.8 ... 116.2 V, Fluke 435: 114.77 ... 115.23 V
230 V, 50 Hz, OPR Fluke 433/434: 228.8 ... 231.2 V, 49.99 ... 50.01 Hz
Fluke 435: 229.77 ... 230.23 V, 49.990 ... 50.010 Hz
460 V, 50 Hz, OPR Fluke 433/434: 458.8 ... 461.2 V, 49.99 ... 50.01 Hz
Fluke 435: 459.77 ... 460.23 V, 49.990 ... 50.010 Hz
15. Set the Calibrator to STBY.
Optional Test. Bandwidth Check of Channel N (*):
Note: for Fluke 435 you must use the Fluke 5700A Calibrator. This instrument is able to
generate 219.99999 V as a maximum at 3 kHz. Therefor a 50 Hz reference voltage of 215
V must be adjusted.
16. Set the Calibrator to 230 V (5700A: 215 V), 50 Hz and OPR.
17. Now check the voltage channel N. Use the Calibrator’s field edit function (5500A:
FIELD EDIT key, 5700A: AMPL/FREQ key) to adjust the Calibrator to an Analyzer
readout of 230.0 V / 215.00 V.
18. Increase the frequency to 3 kHz.
Fluke 433/434: check for a readout of 218.3 V or more.
Fluke 435: check for a readout of 204.25 V or more.
19. Set the Calibrator to STBY.
3.7.4 Verification of voltage inputs in 400 V range
Accuracy Check of Channel A/L1, B/L2, C/L3:
1. Set the Analyzer to 400 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 3-
3).
3. Set the Calibrator to 0 Hz, 0 V and then to OPR.
4. Fluke 433/434: check for a voltage readout V rms between 0.0 ... 2.0 V.
Fluke 435: check for a voltage readout V rms between 0.00 ... 0.40 V.
5. Check the 400 V range according to the table below.