Power Systems

Causes of Power System Disturbances & Corrective Measures

Even though most protective system designs are built around individual components, system-wide disturbances in power systems are rather a frequent…

11 months ago

Sources of Power Quality Problems

Power quality may be affected by a number of issues. Our discussion in this article focuses on various devices and…

12 months ago

Common Terms Used When Describing Power Quality Problems

Power quality has become an important issue to electricity consumers at all levels of consumption. This has especially been intensified…

12 months ago

AC to AC Power Converters with Intermediate DC Link: Types, Features & Applications

This category of AC drives that is often referred to as “Variable Frequency Inverters” is one of the most extensively…

1 year ago

Vacuum Circuit Breakers: Features, Operation & Applications

In vacuum circuit breakers, vacuum typically at pressures ranging from 10-9 to 10-6 bar is used as the quenching medium.…

1 year ago

DC to DC Power Converters: Function, Types, Operation & Applications

DC to DC power converters also referred to as choppers provide the means to change one DC voltage to another.…

1 year ago

Equipment Grounding vs. System Grounding

Grounding or earthing an electrical system is the process of connecting all metalwork/frame of electrical equipment i.e. the non-current carrying…

1 year ago

Switchgear Terminology & IEC Standards

Switchgear generally refers to the switching devices and their combinations, with the related control, measuring, protective and regulating equipment. The…

1 year ago

Air-Blast Circuit Breakers: Features, Operation & Applications

Air-blast circuit breakers utilize a blast of compressed air typically at a pressure of 25–75 bar, which is directed across…

1 year ago

Testing & Commissioning Protective Schemes

Generally protective equipment testing may be divided into three stages: Factory tests. Commissioning tests. Periodic maintenance tests. Factory and commissioning…

1 year ago