Immersed power transformers manufacturer
Our manufacture range extends from 50 kVA until 17 MVA in continuous duty.
Applied voltage level can be until 63 kV.
We can reduce temperature rise of our transformers according to the ambient temperature of installation site.
Our range of manufacturing
Applied voltage level can be until 63 kV.
We can reduce temperature rise of our transformers according to the ambient temperature of installation site.
Our range of manufacturing
Customized windings
A three-54phase transformer active part : 18 secondaries
We design all coupling types on our transformers. Some applications ask additional phases relations; more than the normal relation link to vector group.
We can provide transformer with one three-phase primary and 1, 2, 3, 4 or 6 three-phase secondaries : to have 6, 12, 18, 24 or 36 pulses output.
celduc transfo has already made a three-54phase transformer : one three-phase primary and 18 three-phase secondaries assembled on 1 magnetic core.
Adjustment and variety
According to 94/9/CE, and to comply with safety and health requirements, the electrical devices designed to be used on explosive atmospheres must be IECEX certified by a notified body according to European standard.
Our transformers can be area 2 IECEX certified, for special area installations (rare explosive gaseous atmosphere).
We can also change, on demand, our transformers architecture and then incorporate special covers and/or protection cages… (Useful for transformers with cables bottom entry)
For surface treatment, celduc transfo propose C2M, C3M, C4M systems.
Concerning corrosive environment installations, hot dip galvanization (C5M) is often required.
Our transformers can be area 2 IECEX certified, for special area installations (rare explosive gaseous atmosphere).
We can also change, on demand, our transformers architecture and then incorporate special covers and/or protection cages… (Useful for transformers with cables bottom entry)
For surface treatment, celduc transfo propose C2M, C3M, C4M systems.
Concerning corrosive environment installations, hot dip galvanization (C5M) is often required.
Cooling methods
Our transformers are immersed in oil : it’s a heat transfer fluid which is also insulation role.
Many oil types can be used : mineral, vegetal, silicon or syntetic ester depending on the applications.
For all our power range, ONAN method is the most frequently used :
- hermetically sealed type : with DGPT2 relay.
- breathing type : with conservator, dehydrating breather and buchholz relay…
We can also provide transformers type OFWF or KFWF (need fresh water).
The thermal exchange water/oil via the exchanger cools the transformer.
This method enables to reduce significantly the size of device ; it’s a space saving on site.
We used double wall plate or double tube exchanger, to make impossible the mixing oil/water.
Transformer with double wall plate exchanger
Transformer equipped with double tube exchanger