1 unit of Electricity- Calculation and Price
1 unit electricity is an important parameter for understanding of energy consumption by the electrical load. A Watt (W) is the standard unit of power or load. The rate of […]
Difference between Isolator and Circuit Breaker
The nature of the works of the Isolator and Circuit Breaker is the same, both are used to isolate the circuit from the connected supply. The operating characteristics of both […]
DC earth fault relay –Working principle
DC earth fault relay is commonly used to detect earth fault in DC systems. An ungrounded DC system is used to control the supply of protection systems, control panels, communication, […]
DC earth fault locator –Working Principle
DC earth fault locator is an instrument that is used to detect earth fault in a live DC system. DC system is used for the running of protection systems in […]
Anti pumping relay in Circuit Breaker –Diagram, Working principle
Anti pumping relay is used in the circuit breakers to prevent unwanted closing of the breaker after immediate tripping. Due to failure of the TNC switch (Trip normal close) or […]
Trip circuit supervision relay – Diagram, Working Principle
The trip circuit supervision relay always monitors the healthiness of the trip circuit including a connected trip coil of the CB. Tripping or isolation of CB is the most important […]
Why does Grading Capacitor use in Circuit Breaker?
Grading capacitor is commonly used in High Voltage Circuit Breaker for uniform voltage distribution across the Breaker contacts at CB open position. In a multi-break Circuit Breaker, Grading capacitors are […]
Backup impedance protection in Generator, Transformer & Reactor
In addition to the general protection, backup impedance protection or distance protection is also used in Generator, Transformer & Reactor to protect during external faults in the power system. Generally, […]
Difference between Earthing and Grounding | Earthing vs Grounding
The main difference between earthing and grounding is that – Under Earthing, the circuit is physically connected to the ground to flow circulating current or fault current of the circuit […]
What is Floating Neutral? Effects and How to Test and Fix it?
Floating neutral is a condition, in which the neutral wire of any circuit is disconnected from the ground. In AC system, the neutral wire is permanently grounded to the earth. […]