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New Member

4500 and 6500 power supply related questions

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

1 ACCEPTED SOLUTION

Accepted Solutions
VIP Super Bronze

Re: 4500 and 6500 power supply related questions

Gautam,

I would do the same for 4500 if you have multiple outputs for each power supply.

Good Luck

Reza

5 REPLIES
VIP Super Bronze

Re: 4500 and 6500 power supply related questions

Hi Gautam,

We use 6500 with 6000W power supply and connect them just like your 1st option.  It works well.

HTH

Reza

New Member

Re: 4500 and 6500 power supply related questions

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

VIP Super Bronze

Re: 4500 and 6500 power supply related questions

Yes, each inputs of each power supply to different power sources

HTH

Reza

New Member

Re: 4500 and 6500 power supply related questions

Thanks a lot Reza. What about 4500? Should we follow the same approach for 4500 as for the 6500.

VIP Super Bronze

Re: 4500 and 6500 power supply related questions

Gautam,

I would do the same for 4500 if you have multiple outputs for each power supply.

Good Luck

Reza

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