Helo every one:
We have around 500m cable that are connecting and backing up ( during maintenance or interruptions) two 4.16 KV systems. This is a BILCA cable that is rated for 5KV and always energized from one side and open in the other side. It is rarely used, however it fails many times in...
What cause the substation battery to dry out & what is the impact of adding too much water frequently on the battery life and condition.
I have to add water almost every two weeks.
H1H2N3F4
Good morning all.
We have a double ended switchgear that is rated for 3000A. This switchgear is supplying power to four ( 4) Gas compressors ( 20,500 hp each) and are continuously running. In addition, this switchgear is being supplied by two 60/80MVA, 69kv/13.8kv Bruch type transformers. My...
Hi every one;
I am a new engineer and I have a question to the group;
I have a small project where we need a three phase 225 KVA transformer.
This transformer size is not available in our yard and the installation is urgent. A friend of mine advised me to use three single phase 75 KVA...
I have a primary transformer that is a 1500 KVA, 69KV/13.8KV.
This transformer is supplying power to different loads total of ( 680 KVA).
A request for more power from this transformer was processed with the following specification:
Connected load is 1000KVA and the estimated total Demand...
I am reviewing a project where the design contractor is intending to parallel a 30MVA , delta-Y transformer with a 30 MVA Y-delta transformer.
I think that this can't be done because of the difference in the angular displacement between the two transformer windings.
He insisted that this can...
