Say the total connected load with the consumer is 8kW. The 3phase Breaker will be functioning, while the single phase supply is fed from the generator side.
In normal case, grid supply is fed for the 8kW load. ATS will be in the grid side. When grid supply is OFF, the ATS contacts will move towards the genr. side automatically and single phase supply is fed from the generator.
Please note the situations:
(1) ATS is single phase and current limiting.
(2) The Consumer doesn't have any three phase loads.
(3) The Generator supply will be kept balanced by feeding to other consumers in the similar manner.
So, I am confident with the design. Still, I like to ask you for the comments, whether any demerits?
2 comments:
Dear James,
Following points to be taken care.
Main point to be ensured is that the Changeover should take place only if all the 3 phases of Grid supply fails.
When any one phase returns the C/O Switch position should be back to normal.
To ensure the above it is better to have a 4 Pole C/O Switch. Note you are using a common Neutral.
Warm Regards ~ Sreekumar-Abu Dhabi
Dear James,
Make sure of the following status in the consumer side:-
Emergency loads (single phase) are connected to the same grid (phase) i.e., to B-phase (Generator).
All loads (Emergency circuit) to be single phase with over load protection.
Hope you are taken care
Regards,
Biju R
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