03-17-2010 04:10 AM - edited 03-06-2019 10:10 AM
Dear friends,
I have a 4510-R-E switch with two 4200W power supplies operating in redundant mode.
Each 4200W power supply has two AC inputs.
Looking at the docs, i see that "each power supply operates at 50% capacity and provides
the same total power as a single power supply – if one fails, the backup reverts to
providing 100% power".
So, if i have two power sources viz. UPS A and UPS B. How should i connect power to the switches?
1. Power Supply 1
AC Input 1 - UPS A
AC Input 2 - UPS B
2. Power Supply 2
AC Input 1 - UPS A
AC Input 2 - UPS B
(OR)
1. Power Supply 1
AC Input 1 - UPS A
AC Input 2 - UPS A
2. Power Supply 2
AC Input 1 - UPS B
AC Input 2 - UPS B
Also for the 6500 with 6000W (2 AC inputs) , can you tell me if i should connect the same way?
I know that power supply failure will not be a problem. My concern is that if UPS A fails, then the power supplies should still continue to run at their rated capacity and not at half the capacity.
Thanks a lot
Gautam
Solved! Go to Solution.
03-17-2010 12:42 PM
Gautam,
I would do the same for 4500 if you have multiple outputs for each power supply.
Good Luck
Reza
03-17-2010 05:29 AM
Hi Gautam,
We use 6500 with 6000W power supply and connect them just like your 1st option. It works well.
HTH
Reza
03-17-2010 06:22 AM
Dear Reza,
Thanks a lot. So you mean that you connect the AC inputs of each power supply to different sources and it works fine for you
03-17-2010 06:28 AM
Yes, each inputs of each power supply to different power sources
HTH
Reza
03-17-2010 12:02 PM
Thanks a lot Reza. What about 4500? Should we follow the same approach for 4500 as for the 6500.
03-17-2010 12:42 PM
Gautam,
I would do the same for 4500 if you have multiple outputs for each power supply.
Good Luck
Reza
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