1U Military Grade Computer RS232
1 • Scope
This preliminary specification outlines the electrical and mechanical characteristics for a Selectable wattage, Selectable Redundant output, military grade, ac to dc power supply designed to operate from a Single Phase, 400Hz, Universal AC input power source for Land Based military applications that require the power supply to function under harsh environmental conditions.
2 • Input
2.1 Input Voltage Range: 90 – 264VAC (Channel 1)
2.1.1 Input Voltage Range: 90—264 VAC (Channel 2)
2.2 Frequency Range: 50/60/400Hz (47-440Hz)
2.3 Phase: Single phase,
2.4: Typical Input Current: Per Configuration.
2.5: Power Factor Correction: 0.95 typical @ nominal input and full Load
2.6: Input Transient Protection: MIL-STD 704A/D (80Vdc for 100mSec)
2.7: Voltage Surge Protection: MIL-STD 1275A/D (100Vdc for 50mSec)
3 • DC Output Characteristics
3.1 Output Power: 100W to 750 W (Optional Channel 1)
3.1.1 Output Power: 100W to 750W (Optional Channel 2)
3.2 Output Voltage: 5Vdc, or 12V, or 24V, or 28V, or 48V (Channel 1)
3.2.1 Output Voltage: 5Vdc, or 12V, or 24V, or 28V, or 48V Channel 2)
3.3 Output Current: Configurable
3.4 Line Regulation: ±1.0% Typical
3.5 Load Regulation: ±1.0% Typical (No load to full load, nominal input)
- Output Ripple: 1% Typical (pk-pk, nominal input, full load, 20MHz bandwidth)
3.7 Set Point Accuracy: ± 1.0% of Output Voltage (Nominal input; full load; 25°C)
3.8 Transient Response: Output voltage returns to within nominal output voltage with in 1500uSecs for a 50 to 75% load change.
3.9 Overshoot: Turn-on and turn-off overshoot should not exceed 5% over nominal voltage.
4 • Electrical Characteristics
4.1 Switching Frequency: 360KHz Fixed
4.2 Efficiency: 87% Typical (Measuring at 115Vac input and full load)
4.2 Turn On Delay: 250 to 500mS (To nominal output voltage)
4.3 Isolation Voltage:
Input to Output: 2000Vrms
Input to Chassis: 1000Vrms
Output to Chassis: 1000Vrms
4.4 Isolation Resistance: 50Mohms (Input to output)
4.5 Temperature Regulation: ±2.0%/ºC (±.005%/ ºC max; over operating temp range)
4.6 Hold-up Time: 16mSecs
5 • Protection
5.2 Over Current Limit: 115 to 130% Auto-Recovery after removal of overload condition.
5.5 Over Voltage Protection: 108 to 125% of nominal output voltage. Unit latched, recycle AC input to reset.
5.3 Short Circuit: Auto-Recovery after short circuit condition is removed.
5.4 Over Temperature Protection: The power supply is protected for over temperature conditions with thermal shutdown. Auto-Recovery when temperature returns to normal.
6 • Environmental
6.1 Operating Temperature: -40º to 75º C (Baseplate temperature)
6.2 Storage Temperature: -55º to 100º C
6.3 Operating Humidity: 5% to 90% RH, Non-condensing
6.4 Storage Humidity: 5% to 95% RH, Non-condensing
6.5 Operating Altitude: Sea-level to 40,000ft. Non-Operating: above 40,000ft.
6.6 Shock & Vibration: MIL-STD-810F
6.7 Conducted EMI: MI-STD-461C/E/F
7 • Cooling
7.1 Forced Air Cooling: Sound Level, Maximum 45dBA.
8 • Controls/Signals/Alarms
8.1 Remote On/Off: Optional
8.2 Remote Sense: Optional
8.3 Power Supply will accept commands and communicate in a ASCll format to host computer with a standard RS232 port.
9 • Mechanical
9.1 Outline Dimensions: 19.0” x 26.0” x 1.70” (W x L x H) excluding connectors,
8.2 Enclosure: Aluminum Enclosure,
9.3 Weight: 30 lbs./13608 grams (Estimate)
9.4 AC Input Connector: MS27656T13F04P
9.5 DC Output Connector: MS27656T15F19S
10 • Images
11 • Notes
11.1 Product specifications subject to change without notice. All rights reserved
11.2 The information and specifications contained in this document are preliminary specifications for a proposed power supply product.
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