The block diagram below illustrates the basic elements of a minicomputer system for speed and voltage control as well as…
The arrangement and connection of incoming and outgoing feeders in grid stations and substations and the number of busbars have…
Substations are the points in the power network where transmission lines and distribution feeders are connected together through circuit breakers…
We have various types of overhead line and substation insulators. Generally they can be classified as: Post insulators Cap and…
The function of a ground fault interrupter (GFI) is to disconnect the power if a current leakage to ground is…
Single-phase Power System To help us understand single-phase power system, consider the sine wave shown in figure 1(a) below of…
Alternating current generator Let’s consider a signal turn coil rotating freely at a constant angular velocity symmetrically between the poles…
Causes of Power Surges Transient overvoltages in power systems may arise from a number of sources. Power disturbances resulting from…
Switchgear can be defined as equipment used for controlling, regulating and switching ON and OFF power circuits. Switchgear units range…
Introduction to AC Power Measurement In alternating current circuits, the instantaneous power varies continuously as the voltage and current varies…
