Dual Military Kit
1 • Scope
This preliminary specification outlines the electrical and mechanical characteristics for a 300 watt, single output, military grade, ac to dc travel kit designed to operate under harsh environmental conditions for MIL-STD applications.
2 • Kit Contains
2.1 Gemstar Travel Case 20” x 24” x 12”
2.2 10ft. Lg. 3 Wire AC Power Cable
2.3 30ft. Lg. 2 Wire DC Output Cable with Cable Real
2.4 300 W Single Output (28V) Power Supply With IP67 Enclosure
3 • Power Supply
3.1 Output Power: 300W
3.2 Output Voltage: 28.0Vdc,
3.3 Output Current: 28.0V @ 10.7A,Continuous
3.4 Line Regulation: ±0.2% Typical
3.5 Load Regulation: ±0.2% Typical (No load to full load; nominal input)
3.6 Output Ripple/Noise: 30mV Typical (P-P; 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.
3.10 Output Voltage Adjustment Range: ±10%
4 • Electrical Characteristics
4.1 Efficiency: 90% Minimum (Measuring at full load, nominal voltage input)
4.2 Turn On Delay: 50 to 250mS (To nominal output voltage)
4.3 Isolation Voltage:
Input to Output: 3000Vrms
Input to Chassis: 1500Vrms
Output to Chassis: 1000Vrms
5 • Protection
5.1 Over Current Limit: 115 to 130% Auto-Recovery after removal of overload condition.
5.2 Over-Voltage Protection: 108 to 125% of nominal output voltage. Unit latched, recycle DC 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: -55º to 90º C (Baseplate temperature)
6.2 Storage Temperature: -55º to 100º C
6.3 Operating Humidity: MIL-STD-810, Method 507.2, Procedure l
6.4 Acceleration: MIL-STD-810, Method 513.3, Procedure l & ll
6.5 Operating Altitude: Sea-level to 40,000 ft. in pressurized environment
6.6 Shock & Vibration: Per MIL-STD-810 Method 516.3 and 514.3
6.7 Conducted EMI: MI-STD-461, CE03, CE07, RE02, RS03, CS01, CS02, CS06
6.8 Salt / Fog: MIL-STD-810, Method 509.2, Procedure l
7 • Cooling
7.1 Cooling: Conduction. Baseplate must not exceed 90°C to maintain full rated output.
8 • Image
9 • Notes
9.1 Product specifications subject to change without notice. All rights reserved
9.2 The information and specifications contained in this document are preliminary specifications for a proposed dc to dc converter product.
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