3ph Input to UPS, Single Phase or 3ph Inverter
3ph Input to UPS, Single Phase or 3ph Inverter
(OP)
I have a 3ph 380V 50Hz input available for a UPS (~150kVA).
As I only need to supply single phase loads (240V + Neutral).
Would it be better to purchase a 3ph output inverter UPS and supply loads on 2ph or purchase a single phase inverter UPS ?
As I only need to supply single phase loads (240V + Neutral).
Would it be better to purchase a 3ph output inverter UPS and supply loads on 2ph or purchase a single phase inverter UPS ?






RE: 3ph Input to UPS, Single Phase or 3ph Inverter
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Sometimes I only open my mouth to swap feet...
RE: 3ph Input to UPS, Single Phase or 3ph Inverter
RE: 3ph Input to UPS, Single Phase or 3ph Inverter
Just a question (that may be quite important): Are you going to supply 150 kVA over a single-phase system? That is not very common.
Are you sure that your seemingly single-phase loads are not connected to different phases? I.e. wall outlets connected to different phases + neutral
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...
RE: 3ph Input to UPS, Single Phase or 3ph Inverter
Just to clarify:-
The input rectifier would be 3ph to DC link.
Then I was unsure whether the best option would be to use either:-
1. a single phase inverter; or
2. a 3ph inverter and share the single phase loads across phases (2 phase distribution).
RE: 3ph Input to UPS, Single Phase or 3ph Inverter
Or is this all new - ground up?
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: 3ph Input to UPS, Single Phase or 3ph Inverter
Connect the loads phase to neutral.
respectfully
RE: 3ph Input to UPS, Single Phase or 3ph Inverter