Bespoke Three Phase Transformers
Description
Three phase transformers are generally ‘Isolation’ types constructed on 3 phase ‘3UI’ laminations or cut-strip assemblies with 3 dual wound coils, one mounted on each leg. Each coil has a safety earth screen between the windings. Interconnection of the windings on the three legs can be arranged for all valid vector group. Three phase autotransformers have three windings without the safety earth screen usually connected in the ‘Yyn0’ configuration.
| Power Capability : | Up to 100kVA. Higher on request |
| Voltages : | Standard up to 690V. Up To 11kV available |
| Insulation Class : | B, F or H Class 200 on request |
| Ambient : | 40°C max as standard. Others on request |
| Temperature Rise : | Dependant on insulation class |
| Terminals : | Screw 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
For an ‘Enclosed Style’ transformers click the box link for 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)
|
Overall Height (mm)
|
Weight (kg)
|
IP22 Enclosures
|
Click for
Drawing |
|
|
pdf
|
dwg
|
||||||
|
200VA
|
110
|
100
|
120
|
3.5
|
WM2
|
 |
|
|
500VA
|
190
|
140
|
185
|
7
|
WM5
|
|
|
|
750VA
|
190
|
160
|
185
|
10
|
WM5
|
|
|
|
1kVA
|
210
|
120
|
230
|
13
|
WM5
|
|
|
|
1.5kVA
|
250
|
130
|
250
|
15
|
FM00
|
|
|
|
2kVA
|
250
|
150
|
250
|
20
|
FM00
|
|
|
|
3kVA
|
310
|
160
|
310
|
28
|
FM00
|
|
|
|
4kVA
|
310
|
180
|
310
|
36
|
FM00
|
|
|
|
5kVA
|
310
|
200
|
310
|
45
|
FM00
|
|
|
|
6kVA
|
370
|
175
|
360
|
48
|
FM0
|
|
|
|
7kVA
|
370
|
185
|
360
|
55
|
FM0
|
|
|
|
8kVA
|
370
|
195
|
360
|
65
|
FM0
|
|
|
|
9kVA
|
370
|
210
|
360
|
80
|
FM0
|
|
|
|
10kVA
|
370
|
220
|
360
|
85
|
FM0
|
|
|
|
12kVA
|
430
|
190
|
420
|
90
|
FM2
|
|
|
|
15kVA
|
430
|
220
|
420
|
110
|
FM2
|
|
|
|
20kVA
|
490
|
220
|
480
|
140
|
FM2
|
|
|
|
25kVA
|
490
|
300
|
480
|
190
|
FM2
|
|
|
|
30kVA
|
550
|
270
|
520
|
230
|
FM2
|
|
|
|
40kVA
|
550
|
320
|
520
|
280
|
FM2
|
|
|
|
50kVA
|
620
|
310
|
570
|
350
|
FM3
|
|
|
|
75kVA
|
620
|
330
|
570
|
380
|
FM3
|
|
|
|
80kVA
|
620
|
340
|
570
|
400
|
FM3
|
|
|
|
90kVA
|
730
|
350
|
680
|
530
|
FM4
|
|
|
|
100kVA
|
730
|
360
|
680
|
550
|
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 800KVA
