MIL-PRF-19207G
4.6.14.1 Method I. Fuseholders shall be tested in accordance with method 207 of MIL-STD-202. The
following details shall apply:
a. Mounting fixture shall be in accordance with figure 207-4A of MIL-STD-202.
b. Fuseholders shall be assembled with test fuses and shall be energized with any voltage and
current within their rating.
c.
Each fuseholder shall be monitored to note any opening or chatter of contacts.
d. Fuses which open during this test shall be replaced and the test continued.
4.6.14.2 Method II. The fuseholders shall be tested in accordance with method 213 of MIL-STD-202.
The following details shall apply:
a. Test condition I shall apply except that nominal duration shall be 10 ms ±2 ms.
b. Fuseholders shall be mounted by their normal mounting means.
c.
Fuseholders shall be assembled with test fuses and shall be energized with any voltage and
current within their rating.
d. Each fuseholder shall be monitored to note any opening or chatter of contacts.
e. Fuses which open during this test shall be replaced and the test continued.
106 of MIL-STD-202. The following details and exceptions shall apply:
a. A test fuse with open fuse element shall be installed if required to effect proper seal between
fuseholder cap and body.
b. Mounting - by normal means on a corrosion-resistant metal panel positioned 15 degrees from the
vertical.
c.
Polarization - During step 1 to step 6 inclusive, a dc potential of 100 V shall be applied between
current-carrying parts and mounting hardware. Negative polarity shall be applied to mounting
panel.
d. Vibration, step 7b, shall be omitted.
e. Final measurements - During tenth cycle, insulation resistance measurements shall be made as
specified in 4.6.6. Following a 24 hour period at 23°C ±1°C and 50 percent ±5 percent RH,
respectively.
4.6.16 Enclosure (see 3.5.1). In tests requiring a fuseholder to be mounted, the mounting panel
thickness shall not exceed the maximum specified (see 3.1). Screw type caps shall be hand tight.
4.6.16.1 Unsealed. No test required.
4.6.16.2 Dripproof. The fuseholder containing a test fuse shall be mounted, with fuseholder cap
exposed, on one face of a watertight enclosure. The test shall be made in accordance with the
accelerated dripproof test for parts as specified in MIL-STD-108 or other equivalent test methods as
approved by the qualifying agency. The water flow through a domestic type shower head shall be not
less than 2 gallons per minute (g/min) (see 3.5.1.2).
4.6.16.3 Splashproof. The fuseholder containing a test fuse shall be mounted, with fuseholder cap
exposed, on one face of a watertight enclosure. The test shall be made in accordance with MIL-STD-108
or other equivalent test methods as approved by the qualifying agency (see 3.5.1.3).
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