Operation Manual

8
9C
aravan - 02-08 - DET-0030-07EN
Electrical system
9
9Electrical system
Chapter overview
This chapter contains instructions regarding the electrical system of the car-
avan.
The instructions address the following topics:
safety
explanations of terms relating to the battery
12 V power supply
living area battery
charging the living area battery
power pack
transformer/rectifier
panel
240 V power supply
connection to the 240 V power supply
fuse rating
towing vehicle connection
The operation of the electrical appliances of the housing body is described in
chapter 10.
9.1 General safety instructions
The vehicle is a safe place during a storm (Faraday cage). However, to protect
the electrical devices, disconnect the 240 V connection and retract the
antennae as a precaution.
9.2 Terms
Off-load voltage The off-load voltage is the voltage of the battery in idle condition, i. e. no cur-
rent is consumed and the battery is not being charged.
Closed circuit current Some electrical appliances, such as the clock and the indicator lamps, require
continuous electric current, for this reason they are referred to as inactive
appliances. This closed circuit current flows even if the 12 V power supply has
been switched off.
Total discharge Total discharge of the battery is imminent, if a battery is completely discharged
by an active appliance and by closed circuit current.
Capacity Capacity refers to the amount of electricity which can be stored in a battery.
The capacity of a battery is given in ampere hours (Ah). If a battery possesses
a capacity of 80 Ah, then the battery can dispense a current of 1 A for 80 hours
or a current of 2 A for 40 hours.
External influences such as temperature may alter the storage capacity of the
battery.
Only allow qualified personnel to work on the electrical system.
Total discharge damages the battery.