Control transformer
BUST 4000/4/23
Characteristics
General data
The control transformers of the BUST series ensure safe galvanic isolation of the primary circuit from the secondary circuit. The unique BLOCK IMPEX vacuum impregnation process provides excellent protection against external influences while reducing noise levels. The transformers feature a low profile design.
Benefits
› Control transformer according to EN (IEC) 61558-2-2
› High power density through a compact design concept
› Primary side ±5% taps for voltage adjustment
› Very good inrush behavior due to reduced inrush currents
› Horizontal design
› Touch-protected connection terminals according to UVV BGV A3
| Product | Control transformer |
| Order number | BUST 4000/4/23 |
| Series | BUST |
| Power | 4,000 VA |
| Input | 380 V / 400 V / 420 V |
| Output | 2 x 115 V • 17.4 Aac |
| Phases | 1 |
| Frequency range | 50 Hz to 60 Hz |
| Short-Circuit Losses | 142 W |
| No-Load Losses | 52 W |
| Short-Term Power / instantaneous output | 11,000 VA |
| Short circuit voltage uk | 2.6 % |
| EN Insulation class | B (130°C) |
| UL Insulation class | class 130 |
| Duty Cycle | 100 % |
| Wire material | Copper |
| Efficiency | 95.4 % |
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 | IP 00 |
| 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
| Width | 325 mm / 12.8 in |
| Height | 175 mm / 6.89 in |
| Depth | 240 mm / 9.45 in |
| Weight | 37 kg / 81.571 lbs |
| Low Voltage Directive |
EN 61558-2-2 EN 61558-2-4 |
| Approval cURus - Recognized | UL 5085-1/-2; CSA 22.2 |
