Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

F-42

TROUBLESHOOTING & REPAIR

F-42

 

 

TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE

LOADED - 500 AMP OUTPUT TERMINAL

CONSTANT VOLTAGE INNERSHIELD MODE

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

This is the typical DC open circuit volt- age waveform generated from a proper- ly operating machine. Note that each vertical division represents 20 volts and that each horizontal division represents 2 milliseconds in time. The machine was loaded with a resistance grid bank. The grid bank meters read 400 amps at 36 VDC.

Note: Scope probes connected at

machine ouput terminals: (+) probe to positive 500 amp terminal, (-) probe to negative terminal.

SCOPE SETTINGS

Volts/Div. . . . . . . . . . . . . 20 V/Div. Horizontal Sweep . . . . . 2 ms/Div. Coupling . . . . . . . . . . . . . . . . . DC Trigger . . . . . . . . . . . . . . . Internal

IDEALARC DC-1000

Page 82
Image 82
Lincoln Electric SVM123-A service manual Troubleshooting & Repair