Bespoke Single Phase Transformers, Dual Coil

Bespoke Single Phase Transformers, Dual Coil

Description

Single phase transformers constructed on ‘UI’ (dual coil) laminations with concentric windings on the coil former(s). Commonly wound over the whole former with a safety earth screen between the windings, alternatively it could be on a split bobbin format without screen. Autotransformers follow a similar construction but have a single winding with no safety earth screen.
  • Temperature Rise :- Dependent on size
  • Terminals :- Clamp or Stud, Touchproof. Flying leads on request
  • Insulation Class :- B as standard for single coil construction. Higher available on request

 

Power Capability : Generally 7.0kVA to 100kVA. Higher on request
Voltages : Standard up to 690V. Up to 6.6kV available
Insulation Class : F, H or Class 200 on request
Ambient Temp. : Max 40°C as standard. Others on request
Temperature Rise : Dependant on size
Terminals : Clamp or Stud, touchproof. Flying leads on request

 

 

 

 

 

Options for open style

  • Fuses
  • Thermal protection
  • Tropical varnish

Transformers can be supplied in a range of enclosures from IP22 to IP65.
Options for enclosed style

  • Fuses
  • Thermal protection
  • MCBs & RCDs
  • Plugs & sockets
  • Isolators
  • Meters

The following table indicates typical sizes of ‘Open Style’ transformers for various power ratings of low voltage units (<700V). Please note these may vary slightly as the specific voltage requirements determine the final transformer design.

For ‘Enclosed Style’ transformers click the box link for a dimensional drawing
Note the inclusion of some optional components may result in a size increase of the indicated enclosure type


Rating
Width
(mm)
Depth
(mm)
Height
(mm)
Weight
(kg)
IP22
Enclosures
Click for
Drawing
pdf dwg
8kVA
250
200
360
60
FM0
10kVA
290
220
420
80
FM0
12kVA
290
240
420
90
FM2
15kVA
330
210
470
105
FM2
20kVA
330
240
470
135
FM2
25kVA
330
260
470
145
FM2
30kVA
370
250
520
155
FM3
40kVA
410
250
580
200
FM3
50kVA
410
270
580
230
FM3
60kVA
410
300
580
270
FM3
75kVA
500
270
680
320
FM4
80kVA
500
290
680
335
FM4
90kVA
500
310
680
390
FM4
100kVA
580
350
780
420
FM4

 

For transformers enclosed in high IP rated boxes i.e. non-ventilated, the size of both the transformer and the enclosure has to increase to avoid overheating. Dimensions on request.

Units with voltages greater than 700V up to 11kV can be manufactured however the insulation requirements of these transformers will require a larger build size for the specific rating.
Units can also be designed and manufactured with ratings up to 2MVA.

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