MIL-DTL-62366D(AT)
through 26, and 28 through 31 for not less than 3 revolutions in each cycle. A
100 kHz TTL square-wave signal, with a maximum current of 0.25 A, shall be
passed through rings 1 through 6 and 8 through 12 for not less than 3
revolutions in each cycle. Each current shall be inspected for loss of
continuity. The slip ring assembly shall satisfactorily pass this test within the
parameters specified without failure, degradation of performance or damage to
the unit.
4.3.5.3 Maximum speed verification. To determine conformance to 3.4.3, the slip ring
assembly shall complete an operational test as specified in 4.3.5.2 except that the operational
cycle shall consist of rotation at 12 rpm for 8 revolutions and then reversed at 12 rpm for 8
revolutions.
4.3.5.4 Static limit load capacity verification. To determine conformance to 3.4.5, the
slip ring shall be suitably mounted and then subjected to the transmitted load combinations as
specified in figure 1. There shall be no degradation of electrical performance. In order to assure
that the slip ring assembly is not physically damaged, verify that it is in accordance with the
dimensions as specified in Drawing 12265512 for class I assemblies, and Drawing 12310155 for
class II assemblies.
4.3.5.5 Electrical tests.
4.3.5.5.1 Power ring verification. To determine conformance to 3.4.6.1, the slip ring
assembly shall be rotated at between 7.5 and 12 rpm while applying the maximum input voltage
for fault free, battery only conditions and single fault conditions as specified in MIL-STD-1275.
Steady state voltage shall not exceed 33 V. Import spike and surge voltages into the equipment
as specified in MIL-STD-1275. There shall be no loss of continuity or degradation of
performance.
4.3.5.5.1.1 Current test. To determine conformance to 3.4.6.1, perform the applicable
verification as specified below.
Class I -
Power rings designated 1 and 2 shall transmit a current of 190 A with surges
of 500 A for at least 20 ms. There shall be no evidence of loss of continuity
or degradation of performance.
Class II - Power rings designated as 37 and 38 shall continuously transmit a current of
190 A with surges of 500 A for periods of at least 20 ms. Rings 33 through 36
shall continuously transmit current up to 50 A with surges of 70 for periods up
to 20 ms. There shall be no evidence of loss of continuity or degradation of
performance.
4.3.5.5.2 Control ring verification. To determine conformance to 3.4.6.2, the slip ring
assembly shall be rotated at between 7.5 and 12 rpm while applying the maximum input voltage
for fault free, battery only conditions and single fault conditions as specified in MIL-STD-1275.
Steady state voltage shall not exceed 33 V and the control rings shall transmit TTL levels of
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