Many single-phase compressors require a start capacitor to assist in starting the motor. These capacitors will occasionally fail, causing a compressor to fail to start. Overheating is a primary cause ...

Single-phase motors, adjustable-speed drives (ASDs), and power factor (PF) correction applications often depend on capacitors to operate properly. This article explains how to test these critical ...

Troubleshooting single-phase refrigeration compressors requires a technician to have a proficient understanding of capacitors. The start capacitor is one of two types of capacitors that can be found ...

Capacitor start motors make use of a start capacitor to boost its starting torque. Most of these motors use a centrifugal switch to disconnect the start capacitor from the start winding circuit at the ...

In Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic approach to troubleshoot the main power ...

I remember debugging a compact PLC power board used in a packaging line. The system worked perfectly on the bench. In the field, it started rebooting every few hours. No obvious faults. No overheating ...