MIL-PRF-83383E
4.6.18 Explosion (see 3.21). RCCB's shall be tested in accordance with method 109 of MIL-STD-202. The
following details and exceptions shall apply:
a.
Mounting method: Normal mounting means.
b.
Electrical loading: RCCB's shall be energized with rated voltage and current and be operated for 30
operations.
c.
Testing: The test shall be conducted at sea level only and all sample units may be tested together in the
explosion chamber.
MIL-STD-202. The following details shall apply:
a.
Mounting method: RCCB's shall be mounted by normal means on a dummy panel.
b.
Test condition: A.
c.
Electrical loading: RCCB's shall be in the set position.
d.
Measurements: RCCB's shall be subjected to the 400 percent trip-free calibration test and the 200
percent overload calibration test at 25°C (triple pole RCCB's shall carry 200 percent overload on all three
poles simultaneously) (see 4.6.4).
4.6.20 Salt atmosphere (corrosion) (see 3.23). RCCB's shall be tested in accordance with method 101 of MIL-
STD-202. The following details shall apply:
a.
Test condition: B.
b.
Measurements after exposure: Within 10 minutes after the test, the RCCB shall be washed for 5 minutes
with running water not warmer than 37.8°C accompanied by a slight brushing and dried for 6 hours in a
forced-air oven at approximately 57°C. RCCB's shall be subjected to and shall satisfactorily clear a 200
percent of rated current overload and shall then be subjected to the 200 percent overload calibration test
at room ambient temperature (see 4.6.4) (triple pole RCCB's shall carry 200 percent overload on all three
poles simultaneously).
4.6.21 Interrupt capacity (see 3.24). For the interrupting capacity tests, the RCCB shall be so connected to the
power source that the currents specified (see table X) are provided at the RCCB terminals. The test circuit of figure 5
shall be used. The open circuit voltage before application of the interrupting current and the open circuit recovery
voltage shall be the value specified in table X. Oscillographic records of current, voltage, and time shall be obtained.
The RCCB shall be subjected to the interrupting capacity tests in table X as specified (see 3.1) and shall close on and
open with the interrupting currents and voltages specified. After each interruption, the open circuit voltage specified in
table X shall be maintained across the RCCB for a minimum of 5 seconds. There shall be sufficient time to permit
proper cooling and reset between each cycle of operation. Under no circumstances shall an interrupting test be
repeated within 5 minutes of the previous test.
Following the last operation of each test, the RCCB at room ambient temperature shall be subjected to the dielectric
withstanding voltage test (see 4.6.2) and the 200 percent overload calibration test (see 4.6.4); triple pole RCCB's shall
carry 200 percent overload on all three poles simultaneously. Each pole of triple pole RCCB's in turn shall be
subjected to this test while the other poles are carrying rated current. For triple pole RCCB's, one operation shall be
performed for each test altitude specified. Upon completion, the RCCB shall again be subjected to this test while
each of the poles are simultaneously carrying 60 +10, 0 percent of the single phase fault current specified (see 3.1).
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