BFGoodrich PS-823 - Page 40

BFGoodrich Avionics Systems,
Inc.
Component Maintenance
Manual
P/N 101-1075-()
Corrective
Test
Procedure NormalIndication
Active
2.15
1to7
115±ll.0Vac
NA
Cont.
(C&D)
115.5±l7.5Vac
(A&B)
For
PS-823C,
D,
G
or
H
(Including
if)
The Indicator shall
accelerate to
full
speed
in
less
than 6.0 minutes.
After
synchronization
speed is attained
the
voltage between
pins
shall
be
as
follows:
Indicator
Jl
Pin
3Ø
IØ
l to
3
l l5 ±11.0Vac
NA
3 to 7
115
±5.0Vac
117±7.0Vac
1
to 7
115
±11.0Vac NA
2.16
Battery
Output
Surge
a.
Connect
the Emergency
Power Supply
in
the test
setup in Figure 106 with the
following changes:
1) Disconnect the
external 28.0Vdc source.
The voltmeter
indicates
2)
Disconnect load
resistors R2,
R3, and R4.
115.0Vac
+7%,
-10%.
b.
Place switch
S1 ON.
c.
Monitor
the true RMS voltmeter,
frequency
counter,
The
oscilloscope presents
and
oscilloscope
connected
across load resistor Rl.
a
square wave
of 400
±8Hz
(See
Figure 117).
The square
wave
shall
appear
unifonn and
stable.
d. Retum switch S1 to OFF.
The results
shall be
the
same as
Step
c.
e. Repeat
steps
b, c, and d
two
more times. The results
shall be the
same as Step c.
Performance Test
with
Test Setup
Figure 112 (Cont.)
msmljtp202TestFaultIsodiskl59
24-20-03
Page
120
Revision A June
30, 1999