Variable frequency drives and Soft starters are widely used in industrial motor control and pump control. Both of them are semi-conductor devices. VFD and soft starters although working on similar principle are different from each other.
Single phase Comb Busbar Comb busbar is one of the most basic switch gear instruments. The main purpose of a comb busbar is to distribute power to switch gear components…
Ammeter selector switch is basically a normal three position switch. In large Electrical distribution panels, an ammeter is used to monitor the current through each line. (more…)
Volts and watts are two of the most common and key terms in the field of Electrical and Electronics Engineering. Most of the times these terms confuse the newbie or those who have just started learning Electrical sciences. (more…)
Why are current transformers used in power system? Protective relays coils and measuring instruments such as an ammeter, watt meter and energy meter are very sensitive devices and cannot be…
What are the basic requirements of a protection system used in a power network or equipment? The basic requirements of a protection system are the following: 1. Reliability 2. …
What are the essential components of a protective relay? The essential components of a protective relay are the following: 1. Sensing element. 2. Comparison element. 3. Control element Related…
What are the main functions of a protection relay? The main functions of a protective relay are the following: · Detection of the presence of a fault. · Detection of…
