Circuit Breaker
GFCI (Ground Fault Circuit Interrupter) – Working, Types, Installing and Troubleshooting
Save What is GFCI or GFI? A ground fault circuit interrupter, called a GFCI or GFI, is an inexpensive electrical switchgear device that can
Auto Reclosing of Power Lines and Types of Faults
Save The auto reclosing of power lines has become a generally accepted practice. Reports from different parts of the world show that in certain networks
Square D QO Circuit Breakers
Save QO stands for Qwik-Open. Square D QO Circuit Breakers are fastest tripping circuit breakers at 1/60th of a second. QO™ Circuit Breakers provide the
What is Circuit Breaker – Working Principle and Arcing Phenomenon
What is a Circuit Breaker? As the name indicates, circuit breaker means the device which breaks (Open) the circuit under the abnormal condition and protects the system
What are Motor Control Centres?
The terms ‘Switchgear’ and ‘Motor Control Centres’ are used in general to describe combinations of enclosures, busbars, circuit breakers, power contactors, power fuses, protective relays,
Introduction to Gas Insulated Substations / Switchgears (GIS)
Save Gas insulated substations (GIS) have been used in power systems over the last three decades because of their high reliability, easy maintenance, small ground
Low Voltage Switchgear
Save As per IEC 60947, switchgears with rated voltages up to 1000 V ac and 1500 V dc are termed as low voltage (LV) switchgear.
What is a FUSE and How it Works?
Save A fuse protects an electrical circuit or device from excessive current when a metal element inside it melts to create an open circuit. In this
Oil Circuit Breakers – Types, Working and Construction
Save In oil circuit breakers, some insulating oil (e.g., transformer oil) is used as an arc quenching medium. Working Principle of Oil Circuit Breaker When