MIL-DTL-24640/12E
REQUIREMENTS:
Qualification required.
Component wire: The component wire shall be in accordance with SAE-AS81044 and shall be tested in
accordance with the following wire ratings and additional requirements.
Temperature rating
150 °C (302 °F) (max.) conductor temperature
Voltage rating
600 volts (root mean square) at sea level
Accelerated aging
Non-blocked
Oven temperature, 300±2 °C (572±3.6 °F) for 6 hours
Water-blocked
Oven temperature, 250±2 °C (482±3.6 °F) for 6 hours
Blocking
150±2 °C (302±3.6 °F)
Flammability
30 seconds (max.)
3.0 inches (max.)
No flaming of tissue paper
Humidity resistance
5000 megohms for 1000 feet (min.) insulation resistance after
humidity exposure
Dielectric test
Primary insulation
6.0 kilovolts (peak), 100 percent impulse test
(when tested in lieu of spark test)
Finished wire
8.0 kilovolts (peak), 3 kHz spark test 5.5 kV, 100 percent test
Insulation resistance
5000 megohms for 1000 feet (min.)
Life cycle
Non-blocked
Oven temperature, 200±2 °C (392±3.6 °F) for 168 hours
Water-blocked
Oven temperature, 200±2 °C (392±3.6 °F) for 120 hours
Physical properties of primary insulation
2500 lb/in2 (min.)
Tensile strength
Elongation
150 percent (min.)
Shrinkage
Non-blocked
0.125 inch (max.) at 300±2 °C (572±3.6 °F)
Water-blocked
0.125 inch (max.) at 250±2 °C (482±3.6 °F)
Spark test primary insulation
1500 volts (root mean square), 3 kHz, 100 percent test
Surface resistance
500 megohms inches (min.), initial and final readings
Thermal shock
Oven temperature, 150±2 °C (302±3.6 °F)
Maximum change in measurement
0.060 inch
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