MIL-DTL-9129G
4.6.2.3 Continuous discharge test (see 3.6.3). Dischargers shall be subjected to the specified discharge current
and time period using the method outlined in figure 1 for applying the required current load. The distance between
the test set electrode and the discharger points may be reduced for this test (if the discharge points do not physically
contact the electrode) so that the required discharge current may be achieved without excessive voltage. A number
of test sets may be operated in parallel with no more than one discharger in each test set, so long as the average
recorded discharge current for each discharger is maintained at the required level. The discharger points shall be
approximately centered with respect to the test set electrode face. Subsequent to continuous discharge tests, the
dischargers shall be retested in accordance with 3.6.1, at the spacing previously recorded, and 3.6.2 for radio
frequency discharge noise. Ambient relative humidity and temperature during the test period shall be 40 to 60
percent and 16°C to 27°C, respectively.
4.6.2.4 Power dissipationt test (see 3.6.4). Dischargers shall be subjected to the specified continuous power (see
figure 2) using the method outlined in figure 4.
4.6.3 Electrical flashover test (see 3.6.5). The direct current resistance of the discharger shall be measured before
and after being subjected to five 200 joule electrical impulses. The resistance of the discharger after the impulses
shall be within the specified tolerance, and the discharge current and radio frequency discharge noise (see 3.6.1 and
3.6.2) shall remain within the required limits. The test configuration shall be in accordance with that shown on figure
5.
4.6.4 Direct current resistance test (see 3.6.6). The direct current resistance shall be measured from the
discharge area to the discharger mounting base after a stabilization/soak period of not less than 10 minutes at the
specified temperature.
4.6.5 Lightning transfer (see 3.7). The discharger assembly shall be tested in accordance with zone 2A, current
components B, C and D of RTCA/DO-160G, section 23, using a dwell time of 125 ms ±25 ms for the continuing
current. The following details shall apply:
a. Integral dischargers shall be mounted on an aluminum panel .08 inches thick, 12 by 12 inches with the
appropriate mounting method procedure.
b. Non-integral dischargers shall be mounted on their mating holder and the holder shall be attached to an
aluminum panel .08 inches thick, 12 by 12 with the appropriate mounting method procedure. Measure the bond
resistance between the discharger base and grounded aluminum panel. The resistance shall be 2.5 milliohms
maximum.
c. Position the probe within ½ inch of the discharger base.
d. Apply the current components in the order of D, B, C. It may be required to reposition the probe after
application of any one component in order to complete the remainder.
e. Two dischargers shall be tested as above. The dischargers and holder assemblies (if applicable) shall
remain intact. The resistance of the discharger shall remain within the specified limits.
MIL-STD-202. Discharger resistance shall remain within the specified limits. The following details shall apply:
a. All dischargers less than 300 knots:
(1) Mounting - Securely attached to a rigid fixture by normal mounting (see 4.2.1).
(2) Test condition - C.
(3) Inspection after test - Inspect for broken, cracked, or loosened components.
b. All dischargers less than 600 knots:
(1) Mounting - Securely attached to a rigid fixture by normal mounting (see 4.2.1).
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