ATRU & TRU's

High Reliability Ultra Compact Solutions

Brand:

Ferranti

Lifecycle:

Mature

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Ultra-reliability – minimum component count provides extremely high MTBF for mission critical application and flight safety

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for internal and external power on commercial aircraft, radar and communications power on defence platforms Compliance to DO-160G, MIL-STD-1399, MIL-STD-704

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Rugged design for use with a wide range of temperatures and acceleration profiles. DO-160G, MIL-S-901, MIL-STD-167, MIL-STD-810

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Optimised size, weight and cooling from time of initial design all performance characteristics are analysed for their impact on size, weight, temperature rise, efficiency. Convection, conduction and forced-air cooling Motor drive application – 400 VDC output, 15kW continuous

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Filtered DC output for very low ripple (<0.1 V P-P with balanced line input)

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Diode switching profile selected for EMI emissions and lighting susceptibility compliance to DO-160

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Utilises newly designed transformer topology – along with efficient, low-weight heat-transfer approach previously designed and employed by TT Electronics

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Short development cycle – less than 16 weeks from time of order until delivery of qualification units

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COTS enclosure – ARINC 600 5-MCU standard dimensions

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Optimised weight – 32 lbs. for 15kW continuous

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Manufacturable – Transformer/diodes/filter inductor fully assembled prior to installation in enclosure.

TT Electronics provides auto-transformer rectifier units (non-isolated). This newly designed ATRU has been optimised for use aboard commercial aircraft and utilised to drive a powerful DC motor. Several design innovations are employed – a newly designed phase-shifting autotransformer topology, enhanced forced air cooling and DC filtering for improved motor performance. Fully DO-160 compliant, this package provides flexibility in ATRU design for other applications and power levels. and transformer/rectifier units (isolated) optimised for minimum size and weight, and maximum reliability, solving many of the challenges inherent in airborne rectification.

Specifications

Output -
DC Input 200/115 V, 3 phase, 400 Hz per DO-160G Section 16 Cat A(CF)
DC Output 400 VDC nominal unregulated
Efficiency > 97%, 50-100% load
Ripple <3 V peak – peak with unbalanced lines
Rating -
Thermal Forced air cooling, 180 deg. C insulation system, thermal monitoring
Power 15kW continuous, 30 kW for 30 seconds, 45kW for 5 seconds

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  • Datasheet (1)
Datasheet ATRU datasheet