antonio00
Member
- Location
- Saudi Arabia
Hi,
My load is a mix of AC and DC voltage consuming equipment as given below:
If I want to calculate the size of my transformer, then to do the load calculation, I am doing the following (but I am confused when calculating the DC load, need your help)
5K+2K+2K+2K = 11KVA (Even though I am not gonna use 2K+2K on other 2 phases, but as this is a three phase system, i have included 2K+2K at the end, please correct me If i am wrong here)
Hence, here I have got 11KVA AC voltage 3 phase load
2KVA/48V = 41.6A
41.6A x 380V x 1.732 = 27.37 KVA 380V AC 3 phase (Is this correct)??
Hence Transformer sizing = 38.37 x 1.25 = 47.9 = 50 KVA Transformer of 380V 3 Phase
Can anyone please correct me for the mistakes..Thanks
My load is a mix of AC and DC voltage consuming equipment as given below:
- AC voltage Load = 2KVA (230V AC , 1 phase)
- DC voltage Load = 2KVA (48V DC)
- AC voltage Load = 5KVA (380V AC , 3 phase)
If I want to calculate the size of my transformer, then to do the load calculation, I am doing the following (but I am confused when calculating the DC load, need your help)
- For AC load, I can calculate as following:
5K+2K+2K+2K = 11KVA (Even though I am not gonna use 2K+2K on other 2 phases, but as this is a three phase system, i have included 2K+2K at the end, please correct me If i am wrong here)
Hence, here I have got 11KVA AC voltage 3 phase load
- For DC load, Is this the correct way to calculate?
2KVA/48V = 41.6A
41.6A x 380V x 1.732 = 27.37 KVA 380V AC 3 phase (Is this correct)??
- Now finally adding all together = 11+27.37 = 38.37KVA (380V, 3 phase AC load)
Hence Transformer sizing = 38.37 x 1.25 = 47.9 = 50 KVA Transformer of 380V 3 Phase
Can anyone please correct me for the mistakes..Thanks