A 1322 / A 1422
Measurements according to IEC / EN 60974-4
27
6.2 Insulation resistance (supply circuit to protective circuit)
Refer to chapter
Measurements – Single tests for welding machines
,
paragraph
Insulation resistance (supply circuit to protective circuit)
in master
instrument user manual for detailed information.
Procedure:
Item Comment
Prepare test system.
See
chapter 4.3 Working
with the adapter.
Connect power supply plug of tested welding
machine into proper test socket.
See
figure below.
Prepare and start measurement on the master
instrument.
Wait until measurement is finished or stop the
measurement.
Check result(s).
Store result(s).
Optional
Figure 6.2:
Insulation resistance (supply circuit to protective circuit) measurement
Notes:
Consider any warning on the display before starting the measurement!
Do not touch or disconnect the DUT during the insulation resistance
measurement or before it is fully discharged! The message »
Discharging…
« will
be displayed while the voltage on the DUT is higher than 20 V!
