and Refurbishment of Power
and Electrical Components
Circuit Breakers
Power Supplies
Rectifiers
Weld Controls
Control Component Can Lead
to a Number of Problems
Some of the more obvious power-related fault symptoms are: complete startup failure (the system is completely dead and nothing happens when it is turned on), smoke or fire, and blown fuses or tripped breakers as soon as the power component is turned on.
The first check should always be to measure the output voltage. This will determine whether the component is actually supplying power, and if so, how much. This needs to be done under load. If there is no output, it is likely that an internal, secondary component is at fault.
If your system immediately blows a fuse or trips a breaker upon startup, the most common issue is an electrical wiring mistake. Also check to make sure your power components have the correct rating for your application.
Any kind of sag or surge is a voltage fluctuation. These are short term and typically only last over a few cycles. In these cases, you may have a connected component or machine drawing too much or too little power, the system is improperly grounded, or fails to correct its power factor.