MIL-PRF-83383E
e.
Inspection after shock: RCCB's shall be inspected for evidence of mechanical and electrical damage and
shall be subjected to the 200 percent overload calibration test (triple pole RCCB's shall be subjected to
200 percent overload on all three poles simultaneously at 25°C) (see 4.6.4).
4.6.15 Coordination (see 3.18). RCCB's shall be tested in two phases as specified below to verify compliance with
3.18.
Coordination at overload conditions: The pairs of RCCB's specified in table lX shall be connected in series
a.
and subjected to overloads of 400, 1000, and 2000 percent of the current rating of the lower rated RCCB.
b.
Coordination at interrupt currents: The pairs of RCCB's specified in table lX shall be connected in series
and subjected to the maximum interrupt current for the applicable voltage rating. The test for each
combination shall consist of applying the fault current three successive times with a minimum period of 10
minutes allowed between applications of current.
TABLE lX. Coordination test pairs.
Lower rating
Higher rating
(amperes)
(amperes)
5
10
10
20
25
50
50
100
4.6.16 Electromagnetic interference (see 3.19). RCCB's shall be tested in accordance with MIL-STD-461 as
follows:
CS114 - (induced level: 49.0dBuA - 89.0dBuA from 10kHz - 1MHz; 89.0dBuA - 89.0dBuA from
1MHz - 30MHz; 89.0dBuA - 81.0dBuA from 30MHz - 200MHz; ref. MIL-STD-461 Fig. CS114-1, Curve 3).
RE102 - (radiated level at 1 m: 34dBuV/m at 2MHz - 100MHz; 34dBuV/m at 100MHz logarithmically rising to
54dBuV/m at 1GHz; ref. MIL-STD-461, Fig. RE102-3).
RS103 - (field intensity: 20V/m 2MHz to 1GHz).
The RCCB must be tested in each of the following four modes of operation:
Main contacts open (I/CU open) with rated AC voltage,
Main contacts closed (I/CU closed) with rated AC voltage and current,
Main contacts open (I/CU open) with rated DC voltage,
Main contacts closed (I/CU closed) with rated DC voltage and current.
The RCCB shall remain in the state which reflects the state of the I/CU; the RCCB shall not change state during
any test.
4.6.17 Transient susceptibility (see 3.20). RCCB'S shall be subjected to a discharge across the line and load
terminals from a 1 microfarad capacitor charged to 600 volts. This shall be done when the RCCB is in the closed
position carrying rated current and in the open position. A 50-ohm resistor shall be connected in series with the
capacitor to act as a source impedance during the discharge cycle. The line source impedance may not exceed 50
ohms. This procedure shall be repeated four times within 1 minute with the capacitor connected in one polarity and
then repeated four times within 1 minute with the capacitor connected in the opposite polarity.
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