Pacific UPC-32 Operation Manual page 58

SECTION 4 OPERATION
4.4.2.1 MIL-STD-704D TRANSIENT PROGRAMS (cont)
UNDER-FREQUENCY TRANSIENT (Program #103)
The power source will produce the under-frequency transient excursion as defined by MIL-STD-704D
(Paragraph 5.2.3.2.1). The power source must be configured for a voltage range of at least 115Vrms to
perform this test.
INITIAL CONDITIONS:
TRANSIENT COMMAND SEQUENCE:
Segment 1:
Segment 2:
Segment 3:
Segment 4:
Segment 5:
Segment 6:
f = 393 Hz.
o
V , V , V = 115 VAC (Nominal Steady-State)
a b c
WFa=1, WFb=1, WFc=1
DIRECT COUPLED
F=375 Hz. Va=115, Vb=115, Vc=115, T=0.0002
F=375, Va=115, Vb=115, Vc=115, T=1
F=380, Va=115, Vb=115, Vc=115, T=0.0002
F=380, Va=115, Vb=115, Vc=115, T=4
F=390, Va=115, Vb=115, Vc=115, T=0.0002
F=390, Va=115, Vb=115, Vc=115, T=5
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