Instruction manual

4.3.3. CURRENT MEASUREMENT CALIBRATION

For calibration of current measurement perform the following steps:

1. Program 60 Hz, 135.0 volts and the maximum Current Limit value.

2. If any calibration screen is already displayed, the Current Calibration screen (CAL

CUR) may be displayed by repeatedly depressing either the MON or PRG keys and

then skip to step 6. If a calibration screen is not displayed, press the MNU key

several times until the screen shown below is displayed:

SNC = 01 RNG = 04

3. Enter the key sequence: 959 ENT

4. Depress the MNU key several times until the configuration menu screen is

displayed, as shown below:

CFG = 16 ALM = 17

FLM = 18 CLM = 19

5. Enter the key sequence: 14 ENT to access the CAL CUR screen.

6. Determine the full load resistive value from Table 4-1. Apply the load to the phase

A output only. Measure the phase A output current with the AC Digital Voltmeter

and Current Transformer.

7. On the keypad enter the key sequence:

(Measured phase A current. Example 11.05) A PRG ENT

After about 5 seconds the current measurement function for phase A will be

calibrated.

8. Repeat step 6 for phase B.

9. Repeat step 7 except enter the key sequence:

(Measured phase B current) B PRG ENT

10. Repeat step 6 for phase C.

11. Repeat step 7 except enter the key sequence: