Control transformer
BUST 2500/44/23 - Discontinued types – not for new designs
Characteristics
Benefits
› High power density due to a compact construction design
› Primary side ±5 % tappings for voltage adjustment
› Very good corrosion protection and low noise thanks to BLOCK IMPEX vacuum impregnation
› Contact protected screw connection terminals complying with UVV BGV A3
› Low height
| Product | Control transformer |
| Order number | BUST 2500/44/23 |
| Series | BUST |
| Power | 2,500 VA |
| Input | 394 V / 415 V / 440 V / 461 V |
| Output | 2 x 115 V • 10.9 Aac |
| Phases | 1 |
| Frequency range | 50 Hz to 60 Hz |
| Short-Circuit Losses | 98 W |
| No-Load Losses | 33 W |
| Short-Term Power / instantaneous output | 6,900 VA |
| Short circuit voltage uk | 3.8 % |
| EN Insulation class | B (130°C) |
| UL Insulation class | class 130 |
| Duty Cycle | 100 % |
| Wire material | Copper |
| Efficiency | 95 % |
General
| Short circuit proof | not short-circuit proof |
| Switching group | Iii0 |
| 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 | IP00 |
| Protection class (prepared) | I |
| Overvoltage category | III |
| Degree of contamination | 1 |
Electrical Connections
| Input terminal | Screw terminal |
| Output terminal | Screw terminal |
| Terminal PE | Screw terminal |
Size and Weight
| Weight | 24.8 kg / 54.675 lbs |
| Low Voltage Directive |
EN 61558-2-2 EN 61558-2-4 |
| Approval cURus - Recognized | UL 5085-1/-2; CSA 22.2 |
