MIL-DTL-16878/1C
Insulation resistance:
IR = K log10 D/d
Where: IR = Minimum insulation resistance in megohms
per 1000 feet at 20 °C
K = 2,000
D = Maximum average diameter of finished wire
d = Conductor diameter
Condition 4 hours at -54±1 °C (see table II)
Cold bend:
TABLE II. Cold bend mandrel sizes.
Cold bend mandrel diameter
Wire size
(inches, maximum)
32 through 26
1
24 through 14
2
Surface resistance:
Not required
Condition at 150 °C
Heat resistance:
25 percent change (maximum) in 96 hours at 135 °C
Heat aging:
Insulation tensile strength:
1800 pounds force per square inch (minimum)
Insulation elongation:
100 percent (minimum)
CHANGES FROM PREVIOUS ISSUE. Marginal notations are not used in this revision to identify
changes with respect to the previous issues because of the extensiveness of the changes.
CONCLUDING MATERIAL
Custodians:
Preparing activity:
Navy - SH
DLA - CC
Air Force - 11
DLA - CC
(Project 6145-2193-001)
Review activity:
Navy - AS
4