07-24-2019 08:04 AM - edited 07-24-2019 08:05 AM
Dear Cisco Community,
I have specific questions regarding the power input of switch stack members :
Thanks a lot in advance for your help.
Cheers,
Captain
Solved! Go to Solution.
07-24-2019 08:23 AM
- Decent data center setups should avoid such issues. Unless you are also servicing a Chinese launderette. But internally there will be no 400V difference at all, because output power for the switch will always be DC from each power supply. And if there would be you will note that you can use your stack also as a barbecue set.
M.
07-24-2019 10:13 AM
If I connect the stack member to the L1 electrical outlet and the second stack member in the L2 electrical outlet, am I going to be in trouble ? :)
The PDU where you plug in your switch will convert from single-phase or three-phase to 220v you need. So, as long as you purchase the right PDU, you should have no issue connecting each switch to a different PDU with one source being sing and the other one three. Most single and three phase PDUs come with a C19 connector that connects to your power outputs and multiple regular outlets (110 or 220) that connects to the equipment.
HTH
07-24-2019 08:23 AM
- Decent data center setups should avoid such issues. Unless you are also servicing a Chinese launderette. But internally there will be no 400V difference at all, because output power for the switch will always be DC from each power supply. And if there would be you will note that you can use your stack also as a barbecue set.
M.
07-24-2019 08:59 AM - edited 07-24-2019 08:59 AM
Thanks both for your rapid answers, really appreciate.
marce1000, not sure if I completely get what you mean but it's certainly because of my lack of knowledge in the electrical field.
400 V are coming in our datacenter in a three-phase current. Then, it is split in an electrical panel in three separate phases (L1, L2, L3), each one with its own breaker. Our electrical outlets are then labelled with the corresponding phase (L1, L2, L3).
If I connect the stack member to the L1 electrical outlet and the second stack member in the L2 electrical outlet, am I going to be in trouble ? :)
Thank you very much.
07-24-2019 08:27 AM
Hi,
As long as the input voltage (110 or 220) is the same, it should not matter if the source is a single-phase or three-phase.
HTH
07-24-2019 10:13 AM
If I connect the stack member to the L1 electrical outlet and the second stack member in the L2 electrical outlet, am I going to be in trouble ? :)
The PDU where you plug in your switch will convert from single-phase or three-phase to 220v you need. So, as long as you purchase the right PDU, you should have no issue connecting each switch to a different PDU with one source being sing and the other one three. Most single and three phase PDUs come with a C19 connector that connects to your power outputs and multiple regular outlets (110 or 220) that connects to the equipment.
HTH
07-25-2019 02:23 AM
Ok, thank you very much for your explanations.
07-25-2019 06:30 AM
Glad to help.
Good luck with your project!
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