- VTA07260-00
- 3 Phase, 400Hz, 475W Power Supply.
- FEATURES
- - Up to 450 Watts VME Output Power - Separate 28V O/P of non VME power
- - Maximum power output 475W. - MIL-STD-704A compliant
- - High Input/Output Isolation. - Low Output Ripple.
- - Short Circuit Protection. - Thermal Protection.
- - Output Status Indication - ACFAIL* and OVERTEMP* signals.
- This Power Supply, used in VME applications, features a 6U by 16HP package (9.07Ó L x 3.19Ó W x 9.17Ó H or 1.8 Watt/in3. It has excellent load regulation, input filtering, and low output ripple as well as current limiting and internal thermal shutdown protection.
- Input Specifications:
- (1) Steady State Voltage 108 to 118 VAC, MIL-STD-704A
- (2) Surge Voltage Over voltage: MIL-STD-704A, Cat B, Fig 3 Curve 1, Under voltage: MIL-STD-704A, Cat B, Fig 3 Curve 3
- (3) Frequency 380Hz to 420Hz, MIL-STD-704A
- (4) Frequency Transients ±50Hz, MIL-STD-704A, Fig. 5, Curves 2 and 3.
- (5) Isolation Resistance 1 M½ Phases to chassis @ 500 Vdc
- (6) Inrush Current ² 6.09A Peak rms, per phase
- (7) Power Factor (rated load) >0.9 lagging
- Power Supply Control:
- Control is provided for disabling the VME outputs by a user supplied TTL signal. The outputs are enabled as follows:
- (8) i) PSU Enable (TTL low / Closed) O/Ps ON: All O/Ps
- ii) PSU Enable (TTL high / Open) O/Ps ON: None
- Output Specifications:
- (9) Nominal Rated DC (10) Ripple Max. Current Voltage Current Regulation & Noise Power Limiting
- +5 VDC 48A -0.125V / +0.25V <50mV p-p 240W 81.6A min
- +3.3 VDC 21A -0.05V / +0.15V <50mV p-p 69.3W 23.2A min
- +12 VDC 2.4A -0.36V / +0.60V <50mV p-p 28.8W 6.25A min
- Ð12 VDC 2.0A -0.36V / +0.60V <50mV p-p 24.0W 6.25A min
- +15 VDC 3.7A ±0.3V <50mV p-p 55.5W 5.0A min
- -5.2 VDC 4.0A ±0.104V <50mV p-p 20.8W 5.05A min
- -2.0 VDC 6.0A ±0.04V <50mV p-p 12.0W 10.5A min
- +28 VDC 2.6A ±2.0V <50mV p-p 72.8W 8.15A max
- (11) Over-voltage Protection Shutdown when 111% < Vo < 122% of Rated O/P Voltage, (Not 28V)
- (12) Over-current Protection Each O/P is current limit/ short circuit protected, Limits as above. VME O/Ps have UV detection to shutdown O/Ps in event of overcurrent.
- (13) Efficiency > 75% at full load.
- (14) Remote Sense 5V, -5.2V and -2.0V O/P, 300mV total on supply & return.
- (15) Load regulation Remain within 5% of nominal for load changes 20% to 100% to 20% The outputs return and remain in tolerance within 100ms
- (16) Stabilization time All outputs will be in tolerance within 250ms of PSU enable being set.
- (17) Hold up time ³ 50ms at rated output of 470.4W.
- (18) ACFAIL* Status TTL open collector Asserted at Vin £103Vac, unassert £107.5Vac, to ANSI VITA 1-1994
- (19) DC OK LED LED on front panel active when all O/Ps (not 28V) are within tolerance
- (20) Isolation Input to output ³ 500V, output to chassis ³ 50V
- (21) Bonding Connector shells to heat sink £ 5mohms.
- (22) Over temperature signal TTL open collector asserted at rising baseplate of 95¡C ±5¡C, with 2¡C to 8¡C hysteresis. (TBC)
- (23) Thermal shutdown Complete shutdown at base plate temperatures 100¡C < t < 105¡C Re-activates automatically at min 6¡C below shutdown temp, or 70¡C min. (TBC)
- Environmental Specifications:
- (24) Temperature
- i) Operating: -40°C to +50°C, with 20 CFM airflow at sea level at the rated load. Unit will start at -55¡C, no outputs enabled.
- ii) Storage: -55°C to +85°C
- (25) Humidity Operating: up to 100% condensing
- (26) Altitude Operating: -1300ft to 10000 ft ASL, Non operating: Up to 55000 ft ASL
- (27) Shock To MIL-STD-810F, Method 516 Procedure I, 20g, 11msec terminal peak sawtooth.
- (28) Vibration To MIL-STD-810F, Method 514.4 Procedure I, Category 24 all materiel minimum integrity test (TBC)
- (29) Acoustic Noise Operate whilst being subjected to 147dB overall SPL for 30 min. (TBC)
- (30) EMC MIL-STD-461E: Fig CE102-1 basic curve +6dB (115V).
- (31) Storage No servicing after 36 months at 15¡C £ t £ 30¡C, 15% £ RH £ 50%.
- (32) Safety Guideline 1 of MIL-HDBK-454 and MIL-STD-1472D, para. 5.13.
- (33) Reliability Prediction To MIL-HDBK-217F N2, > TBD hrs at 50°C, Airborne Uninhabited Fighter
- Physical Specifications:
- (34) Mass £ 12 lbs or 5.45 kg
- (35) Dimensions The PSU overall dimensions shall not exceed 9.07Ó x 3.19Ó x 9.17Ó. Case Aluminum alloys, Cover: 5052-H32, Heatsink 6063-T5. Finish Irridite, MIL-C-5541, Class 3
- (36) Mounting Position Any orientation
- (37) Connections Input / Output: CPH47W23MARCSK9X (Conec) , Test: DSS2XSMCM41X (D-sub 15W). Refer to VOI 07260-00 for pin out
- (38) Cooling Forced Air Cooled, Fan supplied buy customer.
- (39) Marking To MIL-STD-130, Vendor Name, CAGE Code, Part No, S/N, Date code. ESD Symbol, EIA RS-471 to MIL-STD-1686 and MIL-HDBK-263.
