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Purpose of shorted CT through PCB?
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Topic: Purpose of shorted CT through PCB? (Read 787 times)
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mluna
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Purpose of shorted CT through PCB?
«
on:
March 19, 2020, 12:53:32 am »
I was fixing an online UPS (APC brand), in which I came across this CT (ct2), shorted through the PCB on its primary. I wonder what's the purpose of doing this if there's no way current flow trough it so it can be sensed.
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ahbushnell
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Re: Purpose of shorted CT through PCB?
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Reply #1 on:
March 19, 2020, 01:03:04 am »
Good question. Maybe the current divides between the trace and the transformer? This allows a smaller transformer?
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Someone
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Re: Purpose of shorted CT through PCB?
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Reply #2 on:
March 19, 2020, 01:15:06 am »
PCB trace as shunt.
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David Hess
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DavidH
Re: Purpose of shorted CT through PCB?
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Reply #3 on:
March 20, 2020, 05:19:46 am »
Based on using all of the connector pins, the traces will operate as a shunt resistance across the current transformer.
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mluna
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