Re: BladeSystem Power supply question (85 Views)
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Neighborhood Admin
chuckk281
Posts: 2,970
Registered: ‎01-09-2007
Message 1 of 2 (86 Views)

BladeSystem Power supply question

Ingbert had a customer question on power supply performance:

 

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I have a question about the reaction of a C7000 Powersupply,  if the voltage slips for about  4 μs.

Can  the powersupply compensate this?

 

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Reply from Chris:

 

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Do you mean input AC voltage?

If so, I believe that all modern switching power supplies will sustain their output for at least 1 ms upon the input power being removed.  There is simply enough power stored in the internal componentry of the power supply to maintain the output power for a few milliseconds.  This is 250 times longer than the 4 microsecond period you are concerned about.

 

However, your question seems to be a bit strange, as in practice it is nearly impossible in the industrial power infrastructure to suppress power for such a short period of 4 microseconds.  Just the inductance of the wires will be enough to force the current to flow for longer period.  In other words, 4 microsecond blackouts do not happen.

 

Perhaps I misunderstood your question.

 

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Neighborhood Admin
chuckk281
Posts: 2,970
Registered: ‎01-09-2007
Message 2 of 2 (85 Views)

Re: BladeSystem Power supply question

Back from Ingbert:

 

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The customer wants to install a new UPS which is energy optimized. The supplier of this UPS states that if

There is a power outage the output of the UPS can have a 4 μs outage too and wants to know if this might give a problem to the C7000.

 

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