PREVOST X3-45 COMMUTER User Manual

SECTION 06: ELECTRICAL
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 06 revised release October 2021
59
Voltage and Battery Temperature Chart
Battery Temperature Minimum Voltage
70ºF (21ºC) and above
9.6
60ºF (16ºC)
9.5
50ºF (10ºC)
9.4
40ºF (4ºC)
9.3
30ºF (-1ºC)
9.1
20ºF (-7ºC)
8.9
10ºF (-12ºC)
8.7
0ºF (-18ºC)
8.5
NOTE
The accuracy of this test procedure is
dependent upon close adherence to the
proper load, time and temperature
specifications.
9.8 SEAT USB POWER SUPPLY
Two Samlex DC-DC converters provide 12V
power to the vehicle’s USB connectors.
For further details, consult the vehicle wiring
diagram, Samlex supplier publication
“Installation and user manual -SDC_IDC_series”
and “Specifications IDC-360B-12”.
FIGURE 45: DC-DC CONVERTERS
9.9 BATTERY CHARGING
DANGER
Wear adequate eye protection when working
on or near the batteries. Ensure that metal
tools or jumper cable
s do not contact the
positive battery terminal (or a metal surface in
contact with it) as a short circuit will result. Do
not attempt to jump start a vehicle suspected
of having a frozen battery because the battery
may rupture or explode. Both the booster and
discharged batteries must be treated carefully
when using jumper cables. Follow exactly the
procedure outlined later in this section, being
careful not to cause sparks.
The batteries used on this vehicle can be
charged either on or off the vehicle. Use the
booster block to charge the batteries when they
are left on the vehicle and make sure that the
main battery disconnect switch is set to the
“On” position.
DANGER
During charging of the batteries, an explosive
gas mixture forms in each cell. Part of this gas
escapes through the vent holes and may form
an e
xplosive atmosphere around the battery
itself if ventilation is poor. This explosive gas
may remain in or around the battery for
several hours after it has been charged.
Sparks or flames can ignite this gas causing
an internal explosion, which may shatter the
battery.
1.
Do not smoke near a battery which is
being charged or which has been recently
charged.
2.
Do not break live circuits at battery
terminals because a spark usually occurs
at the point where a live circuit is broken.
Care must always be taken when
connecting or disconnecting booster leads
or cable clamps on chargers. Poor
connections are a common cause of
electric arcs, which cause explosions.
3. The electrical syst
em on this vehicle is
negati
ve ground. Installing the batteries
with the positive termina
ls grounded or
incorrect use of the booster battery and
jumper cables will result in serious
damage to the alternator, batteries and
battery cables.
The alligator clamps of the tester or charger
must be placed between the terminal nuts and
the lead pads of the terminal studs after the

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in