[j-nsp] EX4550 DC Power Supply

[Jed Laundry]

Thanks Sean! I've asked our Juniper rep to have the documentation updated.

Thanks,
Jed.


On 29 May 2013 04:24, Sean Mentzer <smentzer at mentzer.org> wrote:

> No, those separate inputs are actually connected together in the power
> supply.  There is a description of that on the hardware documentation for
> the QFX3600 (which uses the same DC power supply as the EX4550):
> http://www.juniper.net/techpubs/en_US/release-independent/junos/topics/reference/specifications/dc-power-supply-qfx3500.html
>
> "*Caution: *The V+ terminals are shunted internally together, as are the
> V- terminals. The same polarity terminal can be wired together from the
> same source to provide an additional current path in a higher power
> chassis. Do not connect the terminals to different sources."
>
> For A/B use, install two separate power supplies.
>
>
> On Sun, May 26, 2013 at 10:08 PM, Jed Laundry <jlaundry at jlaundry.com>wrote:
>
>> Hello,
>>
>> I see that the DC power supplies for the EX4550 have two inputs - is this
>> for A/B systems (what I would expect), or are they wired together in
>> parallel?
>>
>> If A/B, what's the wiring configuration? A1,3 B2,4?
>>
>> Thanks,
>> Jed.
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>
>