All analogue electrical indicating instruments require three essential devices: (A) A DEFLECTING OR OPERATING DEVICE: A mechanical force is produced…

There are several important reasons why a grounding system should be installed. But the most important reason is to protect…

There are several ways in which the system and the generator may interact with subsynchronous effects. A few of these…

Subsynchronous resonance is a condition that can exist on a power system where the network has natural frequencies that fall…

Many adjustable-speed drives are equally sensitive to voltage sags as process control equipment discussed in the previous section. Tripping of…

During a short interruption the voltage is zero; thus, there is no supply of power at all to the equipment.…

As short interruptions are due to automatic switching actions, their recording requires automatic monitoring equipment. Unlike long interruptions, a short…

Switchgear covers a wide range of equipment concerned with switching and interrupting currents under both normal and abnormal conditions. It…

The essential features of switchgear are: (I) COMPLETE RELIABILITY With the continued trend of interconnection and the increasing capacity of…