transformer voltage ratio
transformer voltage ratio
(OP)
an auxiliary transformer were to be designed with the following specification:
U1/U2=3.3/0.4 KV(+2*2.5%, -2*2.5%).
V full load =3 KV
Uk=4%
after FAT it became clear that transformers have the ratio 3/0.4 KV.
manufacturer says that the problem could be solved by changing tap steps to be (+2*2.3%, -2*2.5%)
can anybody help me to understand this problem?
U1/U2=3.3/0.4 KV(+2*2.5%, -2*2.5%).
V full load =3 KV
Uk=4%
after FAT it became clear that transformers have the ratio 3/0.4 KV.
manufacturer says that the problem could be solved by changing tap steps to be (+2*2.3%, -2*2.5%)
can anybody help me to understand this problem?






RE: transformer voltage ratio
RE: transformer voltage ratio
You just do not have the number of turns on the primary side for the required ratio; no amount of effort to find a tap changer will help.
RE: transformer voltage ratio
It's hard to make a precise judgment without more details, but it seems that if the purchase order clearly specified a 3.3kV primary, the manufacturer screwed up and should simply furnish the specified device and pay for replacement labor and shipping expense. 'Outboard' or ‘aftermarket’ fixes will likely be unsuitable, particularly given the anticipated life of the equipment.
RE: transformer voltage ratio
RE: transformer voltage ratio
RE: transformer voltage ratio