The TRU is connected to the aircraft three-phase AC network of 115 V AC at a frequency of 400 Hz to supply electrical on-board systems and to load the battery with a DC voltage of 28 V DC. The potential free output voltage is provided over the total range of load and under varying input voltage conditions. The unit is capable to withstand overload for a limited time duration. An integrated fan provides respective ventilation in the specified temperature range.
| Technical Data | |
|---|---|
| Input: | |
| Nominal AC input voltage | 3 x 115 / 200 VAC, 400 Hz |
| Operating AC input voltage | 3 x 108 .... 118 / 187 .... 205 VDC |
| Operating AC input frequency | 400 ± 30 Hz |
| Current consumption (at 250 Amp, nominal load) | approx. 25 Amps at 115/200 VAC |
| Input power factor | > 0.9 lag at nominal load |
| Output: | |
| Normal DC output voltage | 28 VDC |
| Nominal load | 250 Amps continuously |
| Overload | 375 Amps for 2 minutes 750 Amps for 5 seconds |
| Efficiency | > 0.85 at 115/200 VDC input voltage |
| Output ripple voltage | typical < 2.5 V p-p maximum |
| Power consumption without load | < 150 VA |
| MTBF: | |
| Predicted MTBF | > 20 000 operational hours |
| Mechanical Data: | |
| Dimensions (length x width x height) | 229 mm x 177 mm x 154 mm |
| Mass (weight) | max. 9.0 kg |
| Cooling | internal fan |
| Pin assignments: | |
| AC input connector | connector type Amphenol 6020 B-00-E14-04 PN |
| 115 AC Input, Phase A | Pin P1-A |
| 115 AC Input, Phase B | Pin P1-B |
| 115 AC Input, Phase C | Pin P1-C |
| DC Terminal block | |
| 28 V pos. DC input | Stud M8 |
| 28 V neg. DC input | Stud M6 |
| Chassis ground via grounding cable | shield of coaxial connector |
| Environmental Conditions: | |
| Operating temperature | -26 °C to +55 °C |
| Short term operating temperature | -26° C to +75 °C |
| Storage temperature | -40 °C to +90 °C |
| Altitude | 48 000 ft at 35 °C max 20 000 ft at 55 °C max |
| Constant acceleration | applicable 10 g |
| Operational vibrations | applicable 10 Hz to 2000 Hz |
| Fungus | applicable |
| Humidity xxxx | Cat. A |
| Waterproofness | applicable |
| Salt spray | applicable |
| Sand and dust | applicable |
| Fire resistance | applicable |
| Magnetic effect | applicable |
| EMI | DEF STAN 59-41 |
| Conducted emission on power lines | applicable 20 Hz to 150 MHz |
| Radiated emission E field | 14 kHz to 18 GHz |
| H field radiation | 20 Hz to 50 kHz |
| Exported transients on power lines | DEF STAN 59-41 |