FlightSafety Canada
L t é e
L t d .
CL-600-2B16 PILOT TRAINING MANUAL
CL 601-3A/R
2-13
FOR TRAINING PURPOSES ONLY
MAIN BUS OFF Light
The MAIN BUS OFF light illuminates when
both sides of a generator line contactor are
deenergized. It is an indication that there is no
power on a main AC bus.
AUTO OFF/FAIL Switchlight
During manual operation, when pressed in,
the switchlight latches and AUTO OFF illu-
minates, indicating that the bus can only be fed
from its own generator.
During automatic operation, the FAIL light il-
luminates when a bus fault is detected and
isolated by the system. Both FAIL lights il-
luminate if the APU generator is feeding the
faulty bus.
Voltage and Frequency
Metering
A rotary selector allows for the monitoring of
AC voltage and frequency on separate meters.
The rotary selector positions are labeled "EXT
PWR," "GEN 1," "APU," "GEN 2," and "ADG."
DC SYSTEM
DC supply can be subdivided into two systems,
static conversion and battery. In normal op-
eration, primary DC power is derived from
the AC system through the use of four trans-
former-rectifier units (TRU) located in the
forward unpressurized avionics bay (Figure 2-
16). The battery system provides power to
MAIN BATTERY
CHARGER
EXTERNAL DC
CONNECTION
AUXILIARY BATTERY
MAIN BATTERY
AFT ELECTRICAL
DISTRIBUTION BOX (JB4)
NO. 1 MAIN DC
BUS (CBP-A)
LEFT BATTERY
BUS (CBP-A)
RIGHT BATTERY
BUS (CBP-B)
DC ESSENTIAL
BUS (CBP-D)
FROM AC
BUSES
TRANSFORMER
RECTIFIER UNITS
LEGEND
BATTERY AND EXTERNAL POWER
AC POWER
DC STATIC CONVERSION
NO. 2 MAIN DC
BUS (CBP-B)
Figure 2-16. DC System Components Locations