107
EN
- Test voltage for all measurements -
500 V DC
- The insulation resistance must not be
below the limit values shown in the ta-
ble below
- The lowest measured value must be
entered in the test record
Key:
1 Measuring device
2 Test piece
9 Measuring line
Open circuit volt-
age
- Peak value measurement of open circuit voltage at the power source current sockets
- The measurement must be performed using the "Measuring circuit for U
0
measure-
ment" (43,0001,0945)
- The measurement must be performed in Electrode mode
- The open circuit voltage must not exceed the value specified on the rating plate when
supplying the power source with rated welding voltage - tolerance +/- 10%
Open circuit voltage testing procedure:
- Connect the testing circuit and the multimeter to the power source
- Set the multimeter to DC voltage measurement and the measuring circuit to U
PEAK
- Briefly press the Reset button to discharge the capacitors
- Switch on the device
- Adjust the potentiometer until the largest voltage value is shown
NOTE! If no conductive connection exists between the current sockets and the
mains plug contacts during the measurement, then the measurement must be
performed on every current socket/line.
Metrics Measuring point Measured
value
Primary Secondary Mains plug L/N Current sockets 5 M
Primary Earth Mains plug L/N Earth 2.5 M
Secondary Earth Current socket Earth 2.5 M
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