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Two transformers at paralel ?
- Thread starter elico
- Start date
Elico the answer is yes given your conditions (but equal winding DC resistance and PWR rating also) but in real world you can't count on transformers tracking each other with loading unless they are same manufacturer model and lot! Also if multiple secondars, loading on other windings can cause problems cuz of different primary loading between transformers.
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profbuxton
- Joined Feb 21, 2014
- 421
If the two transformers have the SAME PRIMARY voltage and frequency rating the PRIMARIES can be connected in parallel.
If you want to connect the SECONDARIES in parallel they will need to have the same Secondary voltage and frequency rating.
If you want them to share the Secondary load the should be the same power(KVA, KW) rating.
If you want to connect the SECONDARIES in parallel they will need to have the same Secondary voltage and frequency rating.
If you want them to share the Secondary load the should be the same power(KVA, KW) rating.
Bordodynov
- Joined May 20, 2015
- 3,431
See linear transformers:
For nonlinear transformer (with steel core all will worse)
For nonlinear transformer (with steel core all will worse)
Transformers have a polarity between the primary and secondary. In order to use identical transformers in parallel, they must be connected with respect to the same polarity.
... The same goes when connecting the transformers in series.
... One way to determine the polarity is to first connect both secondaries in series, that is, with one secondary terminal on one transformer connected to one secondary terminal of the other. Then, using a small test voltage on the primary side, determine if the secondary total output voltage is indeed additive ... thereby indicating additive polarity.
... Once the polarities have been identified, the transformers can be re-connected in parallel.
... The same goes when connecting the transformers in series.
... One way to determine the polarity is to first connect both secondaries in series, that is, with one secondary terminal on one transformer connected to one secondary terminal of the other. Then, using a small test voltage on the primary side, determine if the secondary total output voltage is indeed additive ... thereby indicating additive polarity.
... Once the polarities have been identified, the transformers can be re-connected in parallel.
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