Protection

Relay Symbols – Electrical and Electronic Symbols

Relays Symbols – Coil, Solenoid, Electromagnet & Contacts Symbols Solenoid operated Relay The solenoid operated relay has a coil wound around a core that produces magnetic field when the coil…
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Is Lightning AC or DC ?

Is Lightning Alternating Current (AC) or Direct Current (DC)? Lightning is a transient impulse, meaning it’s neither purely AC nor DC, but rather a combination of both. In other words,…
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Why Can’t a Transformer Be Operated on DC Supply?

What Happens When the Primary of a Transformer is Connected to the DC Supply? A transformer is a device which step-up or step-down the level of AC current or voltage…
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What Happens When an AC Line Touches a DC Line?

What Happens When DC Equipment are Operated on AC Voltage and Vice Versa ? AC and DC Mixed Operated Devices There is no simple, one-word answer like ‘Yes’ or ‘No’…
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AC or DC – Which One is More Dangerous And Why ?

Which is More Dangerous – AC or DC? First of all, keep in mind that both AC and DC voltage and Current are dangerous and hazardous. Both are our friends…
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Difference between Circuit Breaker and Isolator / Disconnector

Main Differences between Isolator / Disconnector and Circuit Breaker Isolator and Disconnetor As the name suggests, An Isolator or Disconnector is an isolating or disconnecting switch which disconnects or isolate…
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Difference Between Relay and Circuit Breaker

Main Differences between Circuit Breaker and Relay A Relay is a switch used as sensing and controlling device which makes and closes the contacts electronically or electromechanically. Relay is also…
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Main Difference Between Contactor and Starter

Difference Between Contactor and Motor Starter The magnetic starter is very similar to the magnetic contactor in both design and operation. Both devices operate by activating contacts when the coil…
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Main Difference between Fuse and Circuit Breaker

What is the Difference between Fuse and Circuit Breaker A fuse is a device, which is used to protect circuits from over current, overload and make sure the protection of the circuit. It…
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Difference Between MCB, MCCB, ELCB, RCD (RCCB) and RCBO Circuit Breakers

Main Difference Between MCB, MCCB, ELCB, RCCB (RCD or RCB) and RCBO Circuit Breakers Different types of circuit breakers are installed and used for safety purposes in both residential as well…
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