Question

which is the example for coarse excess current protection
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Answer 1

Explanation:

Excess Current Prptection which is not operate within 1.5 times the designated load Current of the circuit, which is protects. Devise affording Corse Excess Current Protection includes BS 88 fuses fitted with fuse links marked to indicate a class Q2 or class R fussing factor.

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Answer 2

Complete Question:

which is an example for coarse excess current protection

MCB

MCCB

Rewirable type fuse unit

HRC fuses.

Rewirable type fuse unit is an example of coarse excess current protection

• Rewirable type fuse units are circuit protection known as overcurrent protection, which guards against excessive currents in electrical circuits.
• Coarse and fine overcurrent protection are the two different forms.
• Fuse or circuit breakers are employed in coarse overcurrent protection, referred to as short-circuit protection, which is intended to safeguard against significant overcurrents.
• Overload protection often referred to as fine overcurrent protection, is employed to safeguard against minor overcurrents and utilises thermal protectors or electronic current limiters.
• Rewirable type fuse units are a kind of coarse overcurrent protection, meaning they guard against significant overcurrents that can harm electrical equipment or start a fire.

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