Crane Aerospace & Electronics Power Solutions 81-014-02 TRANSFORMER RECIFIER UNIT FEATURES • 115 VAC 3 phase 400Hz input • 125A output • 28 Vdc output voltage (unregulated) • Fan cooled PERFORMANCE • Developed to meet RTCA/DO-160D APPLICATIONS • DC Bus Power • Aircraft and Helicopter platforms DESCRIPTION This unregulated Transformer Rectifier Unit (TRU) converts 115 VAC 3 phase 400 Hz into 28 Vdc and can deliver up to 125 amps of power. It has been successfully in use in a commercial helicopter application since 2008. The well established, fan cooled design meets RTCA/ DO-160D and has an MTBF of over 125,000 hours. 10.720 inches MAX (272.3 mm) This TRU is one of many that Crane Aerospace & Electronics provides as the world’s leading supplier of TRUs and AutoTransformer Rectifier Units for commercial aircraft. We offer field proven, exceptionally reliable power solutions for both commercial aerospace and military applications. 9.050 inches MAX (229.9 mm) 5.050 inches MAX (128.3 mm) 5.050 inches MAX (128.3 mm) Crane Aerospace & Electronics Power Solutions - ELDEC 16700 13th Avenue West, Lynnwood, WA 98037 +1.800.464.0261 • [email protected] www.craneae.com/power Page 1 of 2 81-014 TRU - Rev 3, 3/24/15 Crane Aerospace & Electronics Power Solutions 81-014-02 TRANSFORMER RECIFIER UNIT PERFORMANCE DATA INPUT Input Voltage: 115/200 VAC, 3 phase Input Frequency: 400-440 Hz Power Factor: >95% (50-100% load) Efficiency: >87% (50-100% load) OUTPUT Output Voltage: 28 Vdc (unregulated) Output Current: 125 Amps Output Ripple: <1.5 Vp-p maximum Overload Rating: 187A (150%) for 5 minutes 312A (250%) for 1 minute 625A (500%) for 1 second INTERFACE Dimensions (L x W x H) Length: Width: Height: 10.72 inches 5.05 inches 5.05 inches Weight: 10.42 lbs (4.72kg) (max) Cooling: Internal Fan Connections: Input (J1): Output (TB1): D38999/20WD5AN MS25044-1, 2X ¼-28 UNF-2A Thread ENVIRONMENTAL Operating Temperature: -40˚C to +70˚C Ground Temperature: -55°C to +85°C Temperature and Altitude: RTCA/DO-160D, Section 4, Category B2 Temperature Variation: RTCA/DO-160D, Section 5, Category B Humidity: RTCA/DO-160D, Section 6, Category B Operational Shock and Crash Safety: RTCA/DO-160D, Section 7, Category C, Aircraft Type 1, Test Type F ENVIRONMENTAL (continued) Vibration: RTCA/DO-160D, Section 8, Category U Explosion Proofness: RTCA/DO-160D, Section 9, Environmental II, Category E Waterproofness (Rain) RTCA/DO-160D, Section 10, Category W Fluid Susceptibility: RTCA/DO-160D, Section 11, Category F Sand and Dust: RTCA/DO-160D, Section 12, Category D Fungus Resistance: RTCA/DO-160D, Section 13, Category F Salt Spray: RTCA/DO-160D, Section 14, Category S Magnetic Effect: RTCA/DO-160D, Section 15, Class A Voltage Spike: RTCA/DO-160D, Section 17, Category A Audio Frequency Conducted Susceptiblity - Power Inputs: RTCA/DO-160D, Section 18, Category Z Induced Signal Susceptibility (HIRF): RTCA/DO-160D, Section 19, Category C Radio Frequency Susceptibility: RTCA/DO-160D, Section 20, Category YYP Emission of Radio Frequency Energy: RTCA/DO-160D, Section 21, Category H Lightning Direct Effects: RTCA/DO-160D, Section 22, Category A3C3 Electrostatic Discharge (ESD) RTCA/DO-160D, Section 25, Category A MTBF: 125,000 operating hours in a pressurized aircraft protected environment. Design Life: > 20 years All technical 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 © 2015 Crane Electronics, Inc. All rights reserved. Page 2 of 2