MM-400A
6. Installation and Connections
6-3
2) Fit the toroidal coil onto the welding machine’s arm or secondary conductor.
When fitting the coil, be careful with the following:
• Keep the toroidal coil’s hooking bracket as far away from the welding
machine’s arm (secondary conductor) as possible.
• Do not deform the circular form of the toroidal coil when fitting it.
CAUTION
• If the toroidal coil is fitted in reverse orientation, the waveforms in the
WAVEFORM screen and the analog output waveforms measured with
the oscilloscope are also shown in reverse. The analog output (current
and voltage) is output in reverse side of the waveforms in the
WAVEFORM screen.
• For a band-type toroidal coil, do not deform it when fitting it. Repeated
bending and extension may break internal wires.
• The ISO toroidal coil (MB-400M/800M) has an arrow. For DC
measurement, match the direction of an arrow and a current.
Do not deform the circular
form of the toroidal coil.
Keep the hooking bracket at the
furthest point from the arm.
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