61746007 - Attachment A (LL-R83-0065).pdf
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- Attached to
- N4215826QE076 - Cable, Heat Tape
- Solicitation number
- N4215826QE076
About this file
This is a technical specifications document for heat trace tape required under federal contracting specification 4540-LL-R83-0065 (revision 17). The specification details mandatory requirements for a 5-watt, self-regulating heat tracing strip suitable for heavy industrial applications in outdoor marine environments.
The tape shall operate at 115/120 volts AC, 60 cycles, single phase, with a heat output of 5 watts per foot at 50 degrees Fahrenheit. Physical specifications require a flat, ribbon-type tape with a maximum width of 1/2 inch, featuring 16 A.W.G. minimum copper or coated copper bus wires, a shield of copper or tinned copper braid (14 A.W.G. equivalent), and an outer polyolefin jacket with minimum thickness of 0.010 inch. The self-regulating heating core must have a positive temperature coefficient and be capable of regulating and maintaining a minimum of 250 linear feet at constant temperature without creating cold spots when field-cut. The tape must withstand maximum temperature of 160 degrees Fahrenheit in any ambient condition, be field-cuttable at any point, be capable of overlapping or crossing at power outlets without damage, and maintain watertight jackets. Performance requirements include the ability to bend 180 degrees minimum in a 1-inch radius at 10 degrees Fahrenheit without insulation cracking, achieve minimum 400 megohms per 1000 linear feet insulation resistance after 24-hour water immersion, and withstand a 2500-volt dielectric test for one minute following completion of all bend, water immersion, and aging tests.
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Text version
ATTACHMENT-A
Heat Trace Tape Technical Ordering Data 4540-LL-R83-0065 (rev-17 of MIF)
HEAT TRACING STRIP, TAPE, 5 WATT, SELF REGULATING:
SHALL OPERATE WITH 115/120 VOLTS AC, 60 CYCLES, SINGLE PHASE.
HEAT OUTPUT SHALL BE 5 WATTS PER FOOT AT 50 DEGREES F.
MUST BE A FLAT, RIBBON TYPE, TAPE, WITH A MAXIMUM WIDTH OF 1/2 INCH ACROSS
OUTER JACKET.
BUSS WIRES SHALL BE A MINIMUM 16 A.W.G. COPPER OR COATED COPPER WIRE.
MUST HAVE A SHIELD OVER THE INNER JACKET MADE OF COPPER OR TINNED COPPER
BRAID, 14 A.W.G. EQUIVALENT.
MUST HAVE AN OUTER JACKET OF POLYOLEFIN OR POLYOLEFIN MODIFIED TO MEET THE
REQUIREMENTS OF THIS SPECIFICATION AND HAVE A MINIMUM THICKNESS OF .010
INCH.
BOTH INNER AND OUTER JACKETS MUST BE CONTINUOUS WITHOUT NICKS, CUTS, OR
CRACKS WHICH EXPOSE THE HEATING CORE.
SELF-REGULATING HEATING CORE MUST HAVE A POSITIVE TEMPERATURE COEFICIENT
WHICH CAUSES ITS RESISTANCE TO INCREASE WITH AN INCREASE IN TEMPERATURE.
MUST BE CAPABLE OF REGULATING AND MAINTAINING A MINIMUM OF 250 LINEAR FEET
OF TAPE AT A CONSTANT TEMPERATURE.
MUST BE CAPABLE OF BEING FIELD-CUT TO LENGTH AT ANY POINT WITHOUT CREATING
COLD SPOTS.
MUST BE CAPABLE OF BEING OVERLAPPED OR CROSSED AT ALL POWER OUTLETS
WITHOUT DAMAGE TO THE HEATER.
SHALL NOT EXCEED 160 DEGREES F WHEN INSTALLED IN ANY AMBIENT TEMPERATURE.
MUST BE SUITABLE FOR HEAVY INDUSTRIAL APPLICATION IN AN OUTDOOR MARINE
ENVIRONMENT.
JACKETS MUST BE WATERTIGHT.
TAPE MUST BE CAPABLE OF BEING BENT A MINIMUM OF 180 DEGREES IN A 1-INCH
RADIUS AT 10 DEGREES F WITHOUT CRACKING THE INSULATION.
RESISTANCE OF THE INNER AND OUTER JACKETS MUST BE A MINIMUM OF 400 MEGOHMS
PER 1000 LINEAR FEET AFTER THE TAPE HAS BEEN IMMERSED IN WATER FOR A MINIMUM
OF 24 HOURS.
MUST BE CAPABLE OF WITHSTANDING A 2500 VOLT DIELECTRIC TEST FOR A MINIMUM
DURATION OF 1 MINUTE AFTER ALL BEND TESTS, ALL WATER IMMERSION TESTS, AND
ALL AGING TESTS HAVE BEEN COMPLETED.
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