[j-nsp] MX960 Power Options

[Youssef Bengelloun-Zahr]

Hello Colton,

Well, triphase plugsets are delivered with 400V/30A input and split into 3x
208V/30A single phases output using PDUs like theese :

https://lenovopress.com/tips0775?cm_mc_uid=43361460347614525383090&cm_mc_sid_50200000=1453826833

So yeah, you'll be able to plug most equipements on it.

BR.



2016-01-26 17:02 GMT+01:00 Colton Conor <colton.conor at gmail.com>:

> Do most data center providers offer this 400V? The next step up from the
> 208V/30AMP A/B side was a 208V/30A/3-Phase Power A/B side. I have never
> dealt with 3 phase before does the MX960 support 3 phase? Not sure if this
> matters, but the 208V/30A/3-Phase Power is double the cost
> of 208V/30A/Single Phase Power.
>
> On Tue, Jan 26, 2016 at 9:57 AM, Youssef Bengelloun-Zahr <youssef at 720.fr>
> wrote:
>
>> Hello Colton,
>>
>> For that kind of devices using lots of C19 plugs and high wattage PSU
>> (>2kW), you can also go with 400V/30AMP power feeds.
>>
>> We find that solution more efficient for that particular case, for
>> example when use power 4 blade chassis in a rack (two chassis per pair of
>> plugsets).
>>
>> Best regards.
>>
>>
>>
>> 2016-01-26 16:50 GMT+01:00 Colton Conor <colton.conor at gmail.com>:
>>
>>> So from what I gather, there are 4 AC power supplies, and each AC power
>>> supply has two plugs. So thats not really going to change, its more what
>>> power to order from the datacenter.
>>>
>>> So can I get away with one A side 208V/ 30 AMP circuit and one B side
>>> 208V/30AMP circuit?
>>>
>>> 208V X 30AMP X .80 Max Load = 4,992 watts. That's a lot.
>>>
>>> Are you saying I ideally need double this? Why?
>>>
>>> On Mon, Jan 25, 2016 at 10:20 PM, Chuck Anderson <cra at wpi.edu> wrote:
>>>
>>> > I recommend 4 x 208V.  The MX960 uses "power zones" in a 2+2
>>> > arrangement where half of the chassis is powered by 2 PEMs, and the
>>> > other half of the chassis is powered by the other 2 PEMs.  Make sure
>>> > the 1st PEM for each zone is powered by the A feed, and the 2nd PEM
>>> > for each zone is powered by the B feed.  For dual-input PEMs, you
>>> > should put both inputs of a single PEM on the same branch circuit,
>>> > either A or B.
>>> >
>>> > I would use two PDUs to break out the two 208V/30AMP outlets to
>>> > multiple C19's (plus any C13's you need), and then use C19/C20 cords.
>>> > Each branch circuit PDU will have 4 C19/C20 cords connected (2 PEMs x
>>> > 2 inputs per PEM).  Alternatively you could use L6-20 PDU
>>> > outlets/cords.
>>> >
>>> > On Mon, Jan 25, 2016 at 09:25:02PM -0600, Colton Conor wrote:
>>> > > What are the options for powering a MX960 using AC power? The
>>> datacenter
>>> > > provider is offering us power  in the following options:
>>> > >
>>> > > 120V/20AMP A/B Power
>>> > > 120V/30AMP A/B Power
>>> > > 208V/30AMP A/B Power
>>> > >
>>> > > We are leaning towards using a MX960 with 4 AC power supplies and
>>> limited
>>> > > cards installed. More than likely we will order the 208V/30AMP A/B
>>> Power
>>> > > from the datacenter, but want to know if this will be enough? What
>>> does
>>> > > Juniper recommend?
>>> > _______________________________________________
>>> > juniper-nsp mailing list juniper-nsp at puck.nether.net
>>> > https://puck.nether.net/mailman/listinfo/juniper-nsp
>>> >
>>> _______________________________________________
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>>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>>
>>
>>
>>
>> --
>> Youssef BENGELLOUN-ZAHR
>>
>
>


-- 
Youssef BENGELLOUN-ZAHR