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Exin Exam CDCS Topic 3 Question 8 Discussion

Actual exam question for Exin's CDCS exam
Question #: 8
Topic #: 3
[All CDCS Questions]

You are allowed to use a calculator for this question. A battery bank is rated at a total capacity of 600 Ah. Calculate how much charging current the rectifier should be able to supply as charging current.

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Suggested Answer: B

To determine the charging current for a battery bank, a general rule of thumb is that the charging current should be 5% of the total battery capacity. For a battery rated at 600 Ah, this calculation would be:

600Ah0.05=30Amperes600 , text{Ah} times 0.05 = 30 , text{Amperes}600Ah0.05=30Amperes

This ensures the battery is charged efficiently without overloading the rectifier or risking battery damage.

Detailed Explanation:

Battery charging current is typically set as a percentage of the battery's capacity to balance effective charging with longevity and safety. A 5% charging rate is standard for lead-acid batteries, which would be 30 Amperes for a 600 Ah battery bank.

EPI Data Center Specialist References:

EPI standards recommend calculating charging currents based on a percentage of the battery capacity to ensure safety and efficiency, aligning with best practices for battery management in data centers.


Contribute your Thoughts:

Moira
6 days ago
I think B) 30 Amperes is the correct answer. You don't want to overcharge the battery bank, right? Better to play it safe.
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Destiny
7 days ago
The answer is clearly C) 60 Amperes. It's basic math - the battery bank is rated at 600 Ah, so the charging current should be able to supply that capacity.
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Huey
8 days ago
I think the answer is C) 60 Amperes.
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