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Time Multiplier Setting (TMS)

What is the purpose of the Time Multiplier Setting (TMS) in an overcurrent relay?

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Answer & Explanation

Correct AnswerD. To adjust the operating time of the relay

Quick Explanation

TMS scales the operating time of an inverse-time overcurrent relay without changing its pickup-current setting. A lower TMS gives faster operation for the same multiple of pickup current.

Time Multiplier Setting (TMS) explanatory diagram

Detailed Explanation

Correct Answer

D — To adjust the operating time of the relay

Explanation

TMS scales the operating time of an inverse-time overcurrent relay without changing its pickup-current setting. A lower TMS gives faster operation for the same multiple of pickup current.

Key Concept

Time Multiplier Setting (TMS)

Exam Point

Plug setting sets pickup; TMS sets time.

Common Mistake

Do not confuse TMS with current/pickup setting.

Quick Trick

Plug setting sets pickup; TMS sets time.

Common Mistake

Do not confuse TMS with current/pickup setting.

Exam Tip

Plug setting sets pickup; TMS sets time.

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01 ADDITIONAL ASSISTANT ENGINEER.pdf2026Q. 150

Time Multiplier Setting (TMS)

Quick Explanation

Detailed Explanation

Correct Answer

Explanation

Key Concept

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Common Mistake

Quick Trick

Common Mistake

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