Power Supply Model 3200

The SCE 3200 series power supply is a small, modular 400Hz AC to DC supply which outputs +18V @ 2.7A.

The unit is conservatively designed and rated with a minimum MTBF of 300,000 hours under Naval, Sheltered conditions at 50ºC per MIL-HDBK-217E. The supply follows the design guidelines in NAVMAT P-4855, and is derated per AS4613 class A.

The supply is equivalent to Abbott Transistor Laboratories W series, with significantly improved performance.

SPECIFICATIONS

Electrical

Input:

• Voltage Current 105VAC - 135VAC, 350Hz to 450Hz single phase

Output:

• Voltage +18V
• Current 2.7 Amp
• Regulation ±0.1% line, <±20mV load
• Transient 50% to 100% load step: 3% maximum excursion, with recovery to regulation limits in under 100sec.
• Ripple 0.2% p-p maximum
• Efficiency >45% at full load over entire input range
• Temperature Coef. <0.015%/ºC variation over full -55ºC to +90ºC range

Environmental

• Operating Temperatures -54ºC to +90ºC
• Humidity per MIL-STD-810E meth. 507.3 proc III
• Salt Fog per MIL-STD-810E meth. 509.3 proc I
• Altitude per MIL-STD-810E meth 500.3 proc II
• Shock per MIL-STD-810E meth 516.4 proc I,III
• Temp. Shock per MIL-STD-810E meth 503.3
• Burn-In  Each supply is subjected to 10 temperature cycles from -54ºC to 70ºC, for a total of 60 hours of testing.
• Vibration Each unit is vibrated for 10 minutes at 6.3 G’s per NAVMAT P-9492.

Protection Circuits

• Current Limit Foldback type with automatic recovery, will operate into a short circuit with no damage.
• Isolation Input, case and outputs are isolated from each other to 700VDC, with 500M ohms minimum resistance.
• EMI Meets MIL-STD-461B Class A1 (airborne equipment)