SECTION 4 OPERATION
42
4.4.2.1 MIL-STD-704D TRANSIENT PROGRAMS (cont)
OVER-FREQUENCY TRANSIENT (Program #102)
The power source will produce the over-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:
f
o
= 407 Hz. (Maximum Steady-State Limit)
V
a
, V
b
, V
c
= 115 VAC . (Nominal Steady-State Value)
WFa=1, WFb=1, WFc=1
DIRECT COUPLED
TRANSIENT COMMAND SEQUENCE:
Segment 1:
F=425 Hz. Va=115, Vb=115, Vc=115, T=0.0002
Segment 2:
F=425, Va=115, Vb=115, Vc=115, T=1
Segment 3:
F=420, Va=115, Vb=115, Vc=115, T=0.0002
Segment 4:
F=420, Va=115, Vb=115, Vc=115, T=4
Segment 5:
F=410, Va=115, Vb=115, Vc=115, T=0.0002
Segment 6:
F=410, Va=115, Vb=115, Vc=115, T=5
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