Technical Specifications

THE LOW VOLTAGE/HIGH ENERGY SURGE SUPPRESSOR combines in one unit the low clamping voltage and high surge current capabilities needed to protect solid state power and electronic systems from severe lightning-induced and other over-voltage surges. This suppressor meets the need for low clamping voltage and exceptionally high surge current capability packaged in a single, small size unit. Until now these capabilities have been available only from large hybrid protectors comprised of multiple components. The suppressor is packaged to withstand rugged airborne and ground-based environments and will clamp repetitive high energy transients. It is designed for use in a wide variety of applications.

THE LOW VOLTAGE/HIGH ENERGY SURGE SUPPRESSOR operation has been verified for single pulse capability and multiple pulse (multiple stroke) environments. This assures the suppressor will provide protection in the multiple stroke lightning environments for aluminum structures (6 x 70 μs wave-form), all composite structures (50 x 500 μs wave-form), and mixed structures (40 x 120 μs wave-form). The unipolar model is designed for DC power or signal circuits where the operating voltage is of only one polarity and surge voltages of the other polarity must be clamped to very low levels.

THE LOW VOLTAGE/HIGH ENERGY SURGE SUPPRESSOR is especially suitable for clamping lightning-induced surges appearing on aircraft 28 volt DC power distribution busses feeding solid-state avionics. The suppressor clamps the high energy surges to levels easily tolerated by most solid state power supply inputs without interruption of power or tripping of circuit breakers. Its surge current capability exceeds that of many spark-gap devices, and its response (“turn on”) time is virtually instantaneous. The suppressor meets applicable requirements of RTCA DO-160, US MIL_STD-704, and most other aircraft power quality specifications.

Typical Applications

Aircraft

• 28 VDC power distribution busses
• Extended 28 VDC power distribution circuits, at utilization equipment
• Externally mounted electrical apparatus (windshield and air data probe heater circuits, navigation lights, and electrical de-icing systems.)
• DC power and control circuits within advanced composite airframes

Ground

• 28 VDC power or signal circuits interconnected with long cables
• Alarm systems
• Low voltage lighting systems
• Remote or temporary installations exposed to severe transients

Assistance in Application Design in Available

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