2010/09/01 at 12:53 pm #10215
I have a 33/11 KV, Dyn11, 3-phase step down transformer i.e. I draw load from its 11 KV side. Can I use the same transformer in step up configuration i.e. Can I draw load from its 33 KV side continuously?
Is there any practical problem ? from design point of view?2010/09/03 at 8:10 pm #11410
You can use it in step up configuration, the only problem might be to work conected in parallel with other transfomers.2010/09/14 at 5:31 am #11426
You can use it in step up configuration, the only problem might be to work conected in parallel with other transfomers.
me also having same dought2010/09/17 at 6:59 am #11461
You can draw load from the 33kV side but take note the current is much lesser and thinner wire compared to the secondary side.
Since it is a step down transformer the load side is the secondary, the 11 kV. Thus, it has thicker conductor in it (higher current rating) intended to handle a load.
In addition, you could not enjoy the full capacity of the transformer if you use the primary as the load side.
Anyway, the answer for your question is “YES”. :)2010/09/17 at 7:19 am #11462
insulation and voltave rating problem occur if hav same load2010/09/18 at 1:50 am #11463
Step down, Step Up…….
It is a transformer, it has a primary and a secundary, two levels of tension and same power (if excluded the losses in the iron core and in the wiring), so if you have the same power and diferent tension levels, off course the wires are thicker in the side of the lower tension.
It is a reversible machine, you must respect the tension and current rating, it doesn´t mather if you use it as a step up or a step down transformer.
You get a transformer off let’s say 15kV/0,4kV 630kVA and conect a load of 630 kVA (many loads used in 0,4kV) using the transformer as step down, than you get in the secudary (0,4kV) 909 A .
Later on you decide to use it as a step up transformer, then you conect 0,4kV to the former secundary, now is the primary (primary, secundary it is not the level but were you conect the power input and power output), you also conect a load 630kVA in the secundary (15kV) side, off course it can not be the same load used in the step down operation, same power but diferent level of tension. Then you get in the secundary (15kV) 24,2A.
Same power transfer from primary to secundary (630kVA) working as step up or step down, same efficiency, same insulation problems, same losses.2010/09/18 at 9:07 am #11466
- You must be logged in to reply to this topic.