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MIL-DTL-17587 Circuit Breakers, Acb, Low Voltage, Electric Power, Air, Removable Construction, General Specification ForThis specification covers ACB, low voltage, electric power, air circuit breakers with removable construction, their stationary component \(cradle\), and attachments for shipboard use.

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MIL-DTL-17587C(SH)
4.5.7.3 Instantaneous. Circuit breakers shall be tested in accordance with Tables XIII and XIV.
TABLE XIII. Instantaneous pickup testing (electromechanical and electronic trip units) /1.
Trip status
Applied
Instantaneous
current
Left pole
Center pole
Right pole
pickup setting
/2
(amps)
Reqd
Actl
Reqd
Actl
Reqd
Actl
90% of
nominal
No trip
No trip
No trip
instantaneous
pickup setting
Min.
setting
110% of
nominal
Trip
Trip
Trip
instantaneous
pickup setting
90% of
nominal
No trip
No trip
No trip
instantaneous
pickup setting
Intmd.
setting
110% of
nominal
Trip
Trip
Trip
instantaneous
pickup setting
90% of
nominal
No trip
No trip
No trip
instantaneous
pickup setting
Max.
setting
110% of
nominal
Trip
Trip
Trip
instantaneous
pickup setting
NOTES:
/1 Short-time delay band and short-time delay pickup (STDPU) settings shall be set to maximum.
/2 Minimum, intermediate (or as close to middle as possible) and maximum instantaneous setting available on the
circuit breaker, as specified in the applicable specification sheet.
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