To expertly troubleshoot electrical equipment, problems must be solved by replacing only defective equipment or components in the least amount of time. One of the most important factors in doing this, is the approach used. An expert troubleshooter uses a system or approach that allows them to logically and systematically analyze a circuit and determine [...]
A power diode is a semiconductor power on/off switch that allows flow of current in one direction, depending upon its connection. It is a two-terminal semiconductor device.
The two terminals of a diode are called the anode (A) and the cathode (K). These names are derived from the days when valves were commonly used.
Construction-wise, it has [...]
Power electronic components are semiconductor devices, such as diodes, thyristors, transistors, etc. that are used in the power circuit of a converter. In power electronics, they are used in the non-linear switching mode (on/off mode) and not as linear amplifiers. In other words, these devices behave like an electronic switch.
An electronic switch electronically connects or [...]
1. Insulation test: This is the most important test for troubleshooting of any
electrical equipment. Depending on the system, a suitable test voltage is
applied to check the insulation resistance between the live conductors and
earth.
2. Earth continuity test: For electrical equipment, continuity between the
exposed portion (metallic) of earthed equipment and the earth terminal is checked. Resistance value [...]