TM 1-1520-238-T-6
9–90
9–7.
SYSTEM DESCRIPTION (cont)
9–7
EXTERNAL
POWER
CONTACTOR
EXTERNAL
POWER
MONITOR
EXTERNAL
POWER
INTERLOCK
28 VDC
FROM
EXTERNAL
POWER
INTERLOCK
PILOT ELEC PWR PANEL
RESET
28 VDC
M69-35
7
w VOLTAGE
w FREQUENCY
w PHASE SEQUENCE
T2
T1
TO AC
CONTACTOR 1
BUS TIE
INTERLOCK
POWER
EXTERNAL
FROM
28 VDC
B2
X2 (-)
X1 (+)
A1
A3
RELAY
T3
A2
L2
L1
TO
AC BUS 1
L3
BUS TIE 28 VDC
B3
PM
K7
EXTERNAL POWER CONTACTOR
EXTERNAL
FROM
POWER
RECEPTACLE
TO AC
CONTACTOR 2
ØA
ØB
ØC
ØA
ØB
ØC
ØA
ØB
ØC
ØA
ØB
ØC
Figure 9–81.
External Power Monitor and Power Contactor Functional Block Diagram
