Atlas Copco QAS 14, Instruction Manual

Page: 53 / 100

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Description of the electrical
options
Automatic battery charger
The automatic battery charger charges the battery
completely and is disconnected once the unit starts
up.
Besides the output terminals (secondsary side) the
automatic battery charger has a trim potentiometer for
setting of the output voltage. By means of an insulated
slotted screwdriver or adjusting pin the output voltage
can be set in the range 23.5-27.5 V respectively 11.8-
13.8 V.
The LED on the front indicates that the unit is
operational.
Setting:
– Lower output voltage = Counterclockwise
rotation
– Higher output voltage = Clockwise rotation
To use the batery charger:
– Provide the X25 connector, located at the side of
the power cubicle, with external power to use the
battery charger.
Battery switch
The battery switch is situated inside the sound-
insulated bodywork. It allows to open or to close the
electrical connection between the battery and the
engine circuits.
Engine coolant heater
To make sure that the engine can start and accept load
immediately, an external coolant heater (1000 W,
240 V) is provided which keeps the engine
temperature between 38°C and 49°C.
Outlet sockets (S) - 3-phase
A brief description of all outlet sockets and circuit
breakers provided on the generator is given hereafter:
X3 .......3-phase outlet socket (400/480 V AC)
Provides phases L1, L2 and L3, neutral and
earthing.
X4 .......3-phase outlet socket (400/480 V AC)
Provides phases L1, L2 and L3, neutral and
earthing.
X5 .......1-phase outlet socket (230/240 V AC)
Provides phase L3, neutral and earthing.
Q4 .......Circuit breaker for X4
Interrupts the power supply to X4 when a
short-circuit occurs at the load side, or when
the overcurrent protection (16 A) is
activated. When activated, Q4 interrupts the
three phases towards X4. It can be activated
again after eliminating the problem.
Q5 .......Circuit breaker for X5
Interrupts the power supply to X5 when a
short-circuit occurs at the load side, or when
the earth leakage relay (30 mA) or the
overcurrent protection (16 A) is activated.
When activated, Q5 interrupts phase L3 and
the neutral towards X5. It can be activated
again after eliminating the problem.
DEIF
-power in control
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!
The automatic battery charger is
standard on units with the Qc2002™
Controller.
Never turn the battery switch to
OFF during operation.
!
!