MIL-DTL-17361G(SH)
4.5.10.2.2 Instantaneous trip elements. Test shall be made in accordance with 4.5.10.1.2.
4.5.10.2.3 Short-time delay. Tests shall be conducted on each pole in accordance with Tables XV, XVI, and
XVII in room ambient temperature. The tests of Tables XV, XVI, and XVII shall be repeated for each type of short-
time delay curve (flat response, I2T response, etc.) provided with the circuit breaker. Sufficient time between tests
shall be allowed for adequate cooling of the circuit breaker.
TABLE XV. Short-time delay pickup testing (electronic trip units).
Trip status
STDPU
Applied
Left pole (STD switch set at Center pole (STD switch set
Right pole (STD switch
switch
current
min.) /4
at intmd) /3 /4
set at max.) /4
setting /1
(amps)
Required
Actual /2
Required
Actual /2
Required
Actual /2
90% of
No trip
No trip
No trip
STDPU
Min. setting
110% of
Trip
Trip
Trip
STDPU
90% of
No trip
No trip
No trip
STDPU
Intermediate
setting
110% of
Trip
Trip
Trip
STDPU
90% of
No trip
No trip
No trip
STDPU
Max. setting
110% of
Trip
Trip
Trip
STDPU
NOTES:
/1 Minimum, intermediate (or as close to middle as possible) and maximum STDPU setting available on the circuit
breaker as specified in the individual specification sheets (see 3.1).
/2 When the circuit breaker holds at the 90% tolerance current level, enter "No Trip" and when the circuit breaker
trips at the 110% tolerance current level, enter "Trip". After a no-trip event, cycle the circuit breaker manually
from off to on.
/3 Intermediate (or as close to middle as possible) STD setting available on the circuit breaker as specified in the
individual specification sheets (see 3.1).
/4 Duration of applied current shall be one-half (1/2) cycle greater than the circuit breaker STD setting bandwidth
maximum as specified in the individual specification sheets (see 3.1).
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