Watt Verification; Impulse Verification - Fluke 1750 Calibration Manual

1750
Calibration Manual

Watt Verification

1. Use the same connections as the CT current verification and apply 440 V and local
2. Click on the power button in Power Analyze. The A, B and C should be 41.8 kW ±
3. On the calibrator press the blue button for Phase and Ref Menu.
4. Press the blue button for AUX Phase NRM.
5. Enter 90 with the numerical keypad and press Enter. The power should be 0 ±

Impulse Verification

Initialize the UUT
The impulse verification steps instruct the user to apply
working voltages in excess of 700 V, so extreme caution must
be applied. To avoid electrical shock or personal injury, DO
NOT use connectors having exposed metal.
1. Power down the UUT until Power LED turns off, approximately five minutes.
2. Power up the UUT and wait for start up, and connect with Power Analyze.
3. Select Tools>Erase 1750 Memory to empty the UUT data.
Normalize Thresholds
4. Connect the calibrator NORMAL LO to the UUT . terminal.
5. Connect the voltage test cable to the calibrator NORMAL HI jack, leaving the
6. Set the calibrator to 750 V 10 kHz.
7. Press OPR on the calibrator.
8. Connect the voltage test cable to UUT voltage input J for approximately 15 seconds,
Apply Stepped Verification Voltages to Voltage Inputs A, B, C, N, and J
9. Set the calibrator to 800 V 10 kHz.
10. Connect the voltage test cable to UUT voltage input A for approximately 15 seconds,
11. Set the calibrator to 850 V 10 kHz.
12. Connect the voltage test cable to UUT voltage input B for approximately 15 seconds,
13. Set the calibrator to 900 V 10 kHz.
14. Connect the voltage test cable to UUT voltage input C for approximately 15 seconds,
15. Set the calibrator to 950 V 10 kHz.
16. Connect the voltage test cable to UUT voltage input N for approximately 15 seconds,
12
line frequency out of the NORMAL output and 1.9 V on the AUX output.
0.3 kW.
0.1 kW.
safety-connector end free.
and then disconnect.
and then disconnect.
and then disconnect.
and then disconnect.
then disconnect.
XWWarning