Isolating transformer, three-phase
TT3-A025-4040-0
Characteristics
General data
The isolating transformers of the TT3-A series ensure safe galvanic isolation of the primary circuits from the secondary circuits. Our unique BLOCK IMPEX vacuum impregnation process provides excellent protection against external influences while reducing noise levels. The transformers stand out with high performance ranges and low core losses.
Benefits
› Isolating transformer according to EN (IEC) 61558-2-4
› Excellent dissipation of heat losses through optimally arranged cooling channels within the windings
› Integrated crane eyelets
› Easily accessible terminals for simple installation in electrical systems
› Transformers can be customized with individual voltages upon request
| Product | Isolating transformer, three-phase |
| Order number | TT3-A025-4040-0 |
| Series | TT3-A |
| Power | 25,000 VA |
| Input | 3 x 400 V |
| Output | 3 x 400 V • 36.1 Aac |
| Phases | 3 |
| Frequency range | 50 Hz to 60 Hz |
| Short-Circuit Losses | 985 W |
| No-Load Losses | 455 W |
| Short circuit voltage uk | 3.2 % |
| EN Insulation class | F (155°C) |
| UL Insulation class | class 180 |
| Duty Cycle | 100 % |
| Wire material | Aluminum |
| Efficiency | 94.6 % |
General
| Short circuit proof | not short-circuit proof |
| Switching group | Dyn5 |
| Cooling type | AN |
Environment
| Ambient temperature | -20 °C to 40 °C / -4 °F to 104 °F |
| Max. installation height | 2,000 m / 6,562 ft |
Protection and Safety
| Protection type | IP 00 |
| Protection class (prepared) | I |
| Overvoltage category | III |
| Degree of contamination | 2 |
Electrical Connections
| Input terminal | Screw terminal |
| Output terminal | Screw terminal |
| Terminal PE | Screw terminal |
Size and Weight
| Width | 552 mm / 21.73 in |
| Height | 460 mm / 18.11 in |
| Depth | 300 mm / 11.81 in |
| Weight | 156 kg / 343.921 lbs |
| Low Voltage Directive | EN 61558-2-4 |
| Approval cURus - Recognized | UL 1561; CSA 22.2 |
