Discussion in 'The Projects Forum' started by ADETIBA, May 16, 2012.

May 2, 2012
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Good day house, please i want to know the maximum load a 27kva, 30kva, 60kva, 100kva, and 500kva generators can carry per phase for effective performance. All the generators are three phase.

2. ### t_n_k AAC Fanatic!

Mar 6, 2009
5,448
790
In principle you simply divide the generator kVA rating by 3 to estimate the per-phase rating.

So if the generator has a 30kVA rating then the per-phase rating is 10kVA.

3. ### cork_ie Active Member

Oct 8, 2011
391
66
TNK is mainly correct KVA=KW when the Power Factor =1 normally only applies into a purely resistive load.

If the Power Factor is < 1 you will need to build that into your calculations.

Power Factor is affected by the capacitance and inductance of the load,when the Voltage and Current either lag or lead one another.
Another item you need to consider is whether the generator's rating is continuous or intermittent. It would also be a good idea to find out what the peak load is,i.e. for starting electric motors etc. the load can be considerably more than the rated power of the motor

4. ### t_n_k AAC Fanatic!

Mar 6, 2009
5,448
790
I didn't mention kW. It doesn't matter as long as one knows the generator output terminal current rating.