- VTA 05010-01
- 3 Phase, 400Hz, 809W Power Supply.
- FEATURES
- - Up to 694 Watts VME Output Power
- - Two separate Fan supplies, STIR and COOL. (115W combined)
- - Maximum power output 809W.
- - High Input/Output Isolation.
- - Low Output Ripple.
- - Short Circuit Protection.
- - Thermal Protection.
- - Input and Output Status Signals
- - VME Bus Signals.
- This Power Supply, used in VME applications, features a low profile package of 14.3Ó L x 8.1Ó W x 3.25Ó H or 2.15 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-704E
- (2) Surge Voltage Over voltage: MIL-STD-704A, Cat A, Fig 2 Curve 1 Under voltage: MIL-STD-704A, Cat A, Fig 2 Curve 6
- (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 or Neut to chassis @ 500 Vdc
- (6) Inrush Current ² 20A Peak, per phase
- (7) Power Factor (>50% rated load) 0.85
- Power Supply Control:
- Control is provided for disabling the VME outputs when an external temperature sensor contact opens above a user defined threshold. The FAN supplies (STIR +24V and COOL +24V) are ON whenever AC input is applied to the Power Supply. The outputs are enabled as follows:
- (8) i) TEMPSENSE_3 Closed O/Ps ON: VME O/Ps, STIR +24V, COOL +24V
- ii) TEMPSENSE_3 Open O/Ps ON: STIR +24V, COOL +24V
- Output Specifications:
- (9) Nominal Rated DC (10) Ripple Max. Current
- Voltage Current Regulation & Noise Power Limiting
- +5 VDC 100A ±0.2 Vdc <50mV p-p 500W 156 A max
- +3.3 VDC 50.0A ±0.2 Vdc <30mV p-p 165W 112 A max
- +12 VDC 1.4A ±0.5 Vdc <100mV p-p 16.8W 2.7 A max
- Ð12 VDC 1.0A ±0.5 Vdc <100mV p-p 12.0W 2.7 A max
- STIR +24V 2.4A ±0.96 Vdc <500mV p-p 57.6W 8.15A max (1)
- COOL +24V 2.4A ±0.96 Vdc <500mV p-p 57.6W 8.15A max (1)
- (11) Over-voltage Protection < 125% of Rated O/P Voltage, any VME channel.
- (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.
- Note 1: COOL & STIR +24V combined I limit is 8.15A.
- (13) Efficiency > 70% at full load.
- (14) Remote Sense 5V and 3.3V O/P, 150mV on supply & return.
- (15) Load regulation remain in tolerance for load changes 65% to 70% Any other load change, return and remain in tolerance within 0.5ms
- (16) Stabilization time <1s.
- (17) Hold up time 50ms at rated output for VME O/Ps.
- (18) ACFAIL* Status TTL open collector Asserted atVin 104Vac, unassert 108Vac, to ANSI VITA 1-1994
- (19) AC Present LED Open collector cathode connection, active when ACFAIL* is unasserted I limited to 20mA max
- (20) DC OK* Status TTL open collector asserted when all O/Ps are within tolerance
- (21) DC Present LED Open collector cathode connection, active when DC OK* is unasserted, I limited to 20mA max.
- (22) FAN PWR OK* Status TTL open collector asserted when STIR +24 or COOL+24 on.
- (23) Heater Power LED None.
- (24) VME RESET Signals To ANSI VITA 1-1994
- i) Power down reset: Asserted 50s prior to 5V < 4.850V 25mV
- ii) Power up reset: Asserted before 5V >2V, remain asserted for 0.2s t 0.4s after ACFAIL* unasserted and 5V > 4.850V 25mV
- (25) Isolation Input to output 500V, output to chassis 50V
- (26) Bonding Connector shells to heat sink 2.5mohms.
- (27) Over temperature signal TTL open collector asserted at rising baseplate of 95¡C ±5¡C, with 5¡C to 15¡C hysteresis. (TBC)
- (28) Thermal shutdown Partial or complete shutdown at base plate temperature 100¡C (TBC).
- Environmental Specifications:
- (29) Temperature i) Operating: -25C to +65C, 11.5lbs/min cooling, (equiv 150cfm at standard temperature, 25¡C, and pressure sea level) at the rated load.
- ii) Storage: -40C to +71C
- (30) Humidity Operating: up to 95% non-condensing Non operating: up to 100% condensing
- (31) Altitude Operating: Sea level to 15000 ft, rapid decompression, 8,000 to 35,000 ft Non operating: Up to over pressure of 170kPa (-15000 ft).
- (32) Fungus To Guideline 4 of MIL-STD-454
- (33) Shock Functional: 3 x 6g, 11msec terminal peak sawtooth,. 3 axes. Crash: 2 x 30g, 11msec terminal peak sawtooth,. 3 axes.
- (34) Bench Handling Shock To MIL-STD-810E, Method 516.4, Procedure VI.
- (35) Vibration To MIL-STD-810E, Method 514.4 Cat 4 (Propeller Aircraft and Turbine Engines) Procedure I: Figure 514.4-7: F1 = 68Hz; L1=0.3g2/Hz. Free of
- resonance modes in all axes at 17± 2Hz; 68 ± 8Hz and 136 ± 16Hz.
- (36) EMC MIL-STD-461E: Fig CE101-4 Curve #1 plus 16dB, Fig CE102-1= basic curve +6dB (115V), +12dB 10 to 50kHz, Fig CS101-1 Curve #1
- (37) Storage No servicing after 24 months at 15¡C t 30¡C, 15% RH 50%.
- (38) Safety Guideline 1 of MIL-HDBK-454 and MIL-STD-1472D, para. 5.13.
- (39) Reliability Prediction To MIL-HDBK-217F N2, >20,000 hrs at 30C, Airborne Inhabited Cargo
