Please note our step up transformers are available for hire only.
| Image | Manufacturer | Power | Voltage Ratio | Cooling | Vector Group | HV Taps | Availability | hf:att:pa_manufacturer | hf:att:pa_power | hf:att:pa_voltage-ratio | hf:att:pa_cooling | hf:att:pa_vector-group | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Foster | 50kVA | 11000/415V | Oil Cooled | Yd11 | ±2.5 & 5% | For Hire | View | foster | 50kva | 11000-415v | oil-cooled | yd11 |
 | Brush | 1250kVA | 3300/433V, 4160/433V, 6600/433V | Oil Cooled | Yy0 | ±3.1 & 6.2% @ 6.6 & 3.3kV; ±2.44 & 4.88% @ 4.16kV | For Hire | View | brush | 1250kva | 3300-433v 4160-433v 6600-433v | oil-cooled | yy0 |
 | Brush | 2000kVA | 11000/433V | Oil Cooled | Yd11 | ±2.5 & 5% | For Hire | View | brush | 2000kva | 11000-433v | oil-cooled | yd11 |
 | Goodyear | 1250kVA | 11475/415V | Oil Cooled | Yd11 | ±2.5 & 5% | For Hire | View | goodyear | 1250kva | 11475-415v | oil-cooled | yd11 |
| Bonar Long | 4000kVA | 11000/6930V | Silicone Cooled | YNyn0 | ±2.5 & 5% | For Hire | View | bonar-long | 4000kva | 11000-6930v | silicone-cooled | ynyn0 |
| Brush | 800kVA | 11000/3300V | Oil Cooled | YNd11 | ±2.5 & 5% | For Hire | View | brush | 800kva | 11000-3300v | oil-cooled | ynd11 |
 | Bonar Long | 1000kVA | 11450/415V, 6455/415V | Oil Cooled | Yd11 | ±2.5 & 5% @ 11.45kV; ±4.2 & 8.4% @ 6.455kV | For Hire | View | bonar-long | 1000kva | 11450-415v 6455-415v | oil-cooled | yd11 |
 | Pauwels Trafo | 2500kVA | 11515/400V | Oil Cooled | YNd11 | ±2.5 & 5% | For Hire | View | pauwels-trafo | 2500kva | 11515-400v | oil-cooled | ynd11 |
| May & Christe | 800kVA | 6820/415V | Air Cooled Cast Resin | YNd1 | ±2.5 & 5% | For Hire | View | may-christe | 800kva | 6820-415v | air-cooled-cast-resin | ynd1 |
 | Merlin Gerin | 2000kVA | 11500/415V, 6900/415V | Oil Cooled | YNd11 | ±2.5 & 5% @ 11.5kV; ±4.2 & 8.4% @ 6.9kV | For Hire | View | merlin-gerin | 2000kva | 11500-415v 6900-415v | oil-cooled | ynd11 |
 | Bonar Long | 2500kVA | 11000/6600V | Oil Cooled | Yy0 | ±2.5 & 5% | For Hire | View | bonar-long | 2500kva | 11000-6600v | oil-cooled | yy0 |
| Babcock | 1250kVA | 11000/415V | Oil Cooled | YNd11 | ±2.5 & 5% | For Hire | View | babcock | 1250kva | 11000-415v | oil-cooled | ynd11 |
| Goodyear | 1250kVA | 11475/415V | Oil Cooled | Yd11 | ±2.5 & 5% | For Hire | View | goodyear | 1250kva | 11475-415v | oil-cooled | yd11 |
 | Lindley Thompson | 1500kVA | 11000/6600V | Oil Cooled | Yy0 | ±2.5 & 5% | For Hire | View | lindley-thompson | 1500kva | 11000-6600v | oil-cooled | yy0 |
 | HTT | 2500kVA | 11000/660V | Air Cooled Cast Resin | YNd11 | None | For Hire | View | htt | 2500kva | 11000-660v | air-cooled-cast-resin | ynd11 |
 | Brush | 1300kVA | 6900/415V | Oil Cooled | Yd11 | None | For Hire | View | brush | 1300kva | 6900-415v | oil-cooled | yd11 |
 | Brush | 1000kVA | 11000/400V | Oil Cooled | Yd11 | ±2.5 & 5% | For Hire | View | brush | 1000kva | 11000-400v | oil-cooled | yd11 |
 | Winder | 6.25MVA | 33/11kV | Oil Cooled | YNyn0 | ±10%, 17 position ON load tap changer | For Hire | View | winder | 6-25mva | 33-11kv | oil-cooled | ynyn0 |