Saab 340B, Operation Manual

Page: 325 / 670

ELECTRICAL
Description
Aircraft Operations Manual
5.1
PAGE 7
Jun 01/19
A31860
R MAI
ST
ART BUS
Bus tie relay
EMER A
VIONIC
BUS
L A
VIONIC
ST
ART BUS
L A
VIONIC BUS
L MAIN
BUS
L MAIN
ST
ART BUS
ESS A
VIONIC
BUS
L ESS BUS
EMERGENCY
BUS
R A
VIONIC
ST
ART BUS
R ESS BUS
R BA
T
BUS
R MAIN BUS
R A
VIONIC BUS
L BA
T
BUS
L GEN BUS
L A
VION
switch
ESS A
VION
switch
R A
VION
switch
L MAIN BUS relay
L generator relay
Series/parallel relay
ESS BUS relay
L
BA
T
switch
R BA
T
switch
R MAIN ST
ART
BUS relay
Emer
. battery
ESS BUS relay
L A
VION
BUS relay (RCCB)
Left power distrubution unit
Right power distrubution unit
R MAIN BUS relay
UTILITY BUS relay
ST
ART BUS
R GEN BUS
R HOT BA
T BUS
Left generator control unit (GCU)
Right generator control unit (GCU)
Gen relay
control
Start relay
control
R generator relay
Starter/generator field control and
fault detection
L battery
L start relay
R battery
relay
R start relay
External power
relay
L HOT
BA
T BUS
Gen relay control Start relay control
(RCCB)
L HOT BA
T
BUS relay
L battery relay
External power
R battery
R A
VION
BUS relay (RCCB)
L MAIN ST
ART
BUS relay
UTILITY
BUS
Starter/generator field control and
fault detection
−
L and R BA
T
switches
ON.
−
ESS A
VION
switch
ON.
Fig. 2 Electrical power DC system − schematic