Crane Aerospace & Electronics Power Solutions 81-083 TRANSFORMER RECTIFIER UNIT TECHNICAL FEATURES • 115 VAC, 3 phase, 400 Hz input • 28 Vdc output power • 250 Amps • 24 pulse rectification • Fan cooled • Unregulated • Very low current THD PERFORMANCE Developed to meet RTCA/DO-160 Application • Aircraft DC Bus power DESCRIPTION SIDE VIEW 13.00 inches (330 mm) MAX 12.30 inches (312 mm) MAX AIR OUTLET AREA 6.00 inches (152 mm) This field proven Transformer Rectifier Unit (TRU) can provide up to 250 amps of power in a pressurized commercial aerospace environment. This proven design has been successfully operating in the field since 2000 and has an MTBF of 50,000 hours. Already in use on business aircraft, this unit can be used on a variety of other platforms. This TRU is one of many that Crane aerospace & Electronics provides as the world’s leading supplier of TRUs and Auto Transformer/Rectifier Units for commercial aircraft. We offer field proven, exceptionally reliable power solutions for both commercial aerospace and military applications. TOP VIEW FRONT VIEW 9.50 inches (241 mm) MAX 8.50 inches (216 mm) 7.75 inches (197 mm) MAX AIR INLET AREA AND AIR FILTER 9.00 (229) Crane Aerospace & Electronics Power Solutions - ELDEC 16700 13th Avenue West, Lynnwood, WA 98037 +1.800.464.0261 • [email protected] www.craneae.com/power 4X 0.281 (7) Page 1 of 2 81-083 TRU - Rev 2, 12/2/14 4.55 ± 0.10 (115.6 ± 2.5) Crane Aerospace & Electronics Power Solutions 81-083 TRANSFORMER RECTIFIER UNIT PERFORMANCE DATA INPUT Input Voltage: 115 VAC, 3 phase per RTCA/ DO-160C, Section 16, Cat A. Input Frequency: 400 Hz Input Current: <24 Amps Power Factor: >0.95% at 250 A load Efficiency: >85% at 250 A load Current THD: <5% at 250 A output OUTPUT Output Voltage: 28 Vdc Output Current: 250 Amps Output Ripple: <1.5 Vp-p at 250 A load Overload Rating: 150% (375 amps) for 2 minutes 200% (500 amps) for 5 seconds 280% (700 amps) for 1 second Operational Shock and Crash Safety: RTCA/DO-160D, Section 7, Category A Explosion Proofness: RTCA/DO-160C, Section 9, Category E2 Waterproofness: RTCA/DO-160C, Section 10, Category W Fluids Susceptibility: RTCA/DO-160C, Section 11, (except hydraulic fluids) Fungus Resistance: RTCA/DO-160C, Section 13, Category F Magnetic Effects: RTCA/DO-160C, Section 13, Category B Voltage Spike: RTCA/DO-160C, Section 17, Category A Audio Frequency Conducted Susceptiblity - Power Inputs: RTCA/DO-160C, Section 18, Category A INTERFACE Dimensions (not including external hardware): Length: 13.00 inches (330.2 mm) Width: 9.5 inches (241.3 mm) Height: 6.0 inches (152.4 mm) Induced Signal Susceptibility: RTCA/DO-160C, Section 19, Category Z Radio Frequency Susceptibility (HIRF): RTCA/DO-160C, Section 20, Category U Weight: ≤ 25 lbs (<11.3 kg) Cooling: Internal Fan Emission of Radio Frequency: RTCA/DO-160C, Section 21, Category Z Conducted Susceptibility: RTCA/DO-160C, Section 20 Category U Radiated Susceptibility: 20 V/M, 30 to 400 MHz (AM-1KHZ square wave) 28 V/M, 400 MHz to 8 GHz (AM-1KHz square wave) 150 V/M, 400 MHz to 8 GHz PM - 1mS, 1 KHz Connections: Input: Signal: Output: Terminal Block: Positive: Negative MS3470L14-4P MS3470L10-6P MS25044-1 3/8-24 UNF 2A Stud 5/16-24 UNF 2A Stud ENVIRONMENTAL Temperature and Altitude: RTCA/DO-160C, Section 4, Category A2. +15,000 feet Ground Survival RTCA/DO-160C, Section 4 - 55 °C to +85 °C Temperature Variation: RTCA/DO-160C, Section 5, Category B Humidity: RTCA/DO-160C, Section 6, Category B Lightning Indirect Effects: RTCA/DO-160C, Section 22, Change Notice 2 Pin level test as shown AC Lines: WF 3, 1500 Voc/500 Asc WF 4, 880 Voc/150 Asc DC Lines: WF 3, 1500 Voc/50 Asc WF 4, 300 Voc/60 Asc Design Life: > 20 years All information is believed to be accurate, but no responsibility is assumed for errors. We reserve the right to make changes in products or specifications without notice. Copyright © 2014 Crane Electronics, Inc. All rights reserved. Page 2 of 2