Load Guard; Electrical System 12 V - Polar Electro 520 CTH DB 2020 Instruction Book

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Wiring diagram 230 V
ELECTRICAL INPUT
ELINTAG
MAINS INPUT 16 A
JORDSKENA
EARTH BAR
VÄGGINTAG 16 A
EARTH LEAKAGE CIRCUIT
JORDFELSBRYTARE/
BREAKER / MASTER
HUVUDBRYTARE
RK 4,0 YELLOW/
RK 4,0 GUL/GRÖN
SWITCH
GREEN ATTACHED
ANSLUTEN TILL
INTO CHASSIS
CHASSI
N
E
P
F
N
E
If the earth leakage circuit breaker or the
miniature circuit breakers have tripped, the
fault must first be located. In all cases apart
from an overload, the fault must be repaired
by an authorised engineer before returning
the reset button to the original position. Test
the function of the earth leakage circuit brea-
ker at regular intervals using the test button
(see picture on page 30).

Load guard

Some caravans can be equipped with a load guard. The load
guard is used to prevent the 230 V fuses being overloaded.
If the total power consumption of the caravan exceeds
the set value, the boiler's power will be automatically
reduced or disconnected.
The total power consumption of the caravan should not be
larger than fused power consumption (see table below).
Fuse
Max power
6 A
1300 W
1 0 A
2300 W
1 6 A
3600 W
The load guard is disconnected in the default setting. To
connect the load guard, do the following:
1. Lock up and go into the control panel tools menu,
(see Alde manual supplied with the caravan).
2. Set the desired fuse with the button"Amp", (pos 16
in the picture above).
Electrical system
OUTLINE DIAGRAM 230 V
PRINCIP SKISS 230V
BATTERILADDARE 12 V
BATTERY CHARGER 12 V
F
P
THE WALL SOCKETS AND JUNCTION
UTTAGEN OCH K-DOSORNAS
BOX CAN FLUCTUATE BETWEEN DIF-
PLACERING KAN VARIERA
FERENT CARAVANS AND VARIANTS
BEROENDE PÅ VAGN OCH
VARIANT
Settings overload
protection
6 or 7 A
9, 10 or 11 A
15, 16 or 17 A
If a fuse does not hold, one can select a lower value. The
load guard can be set at 6, 7, 9, 10, 11, 15, 16 or 17 Amps.

Electrical system 12 V

The caravans have a 12 V battery for operating the heating
boiler, circulation pump, interior lighting, water pump,
kitchen fan, etc.
The battery is placed in one of the wardrobes. See page 35
for data/maintenance
The main switch button and main fuses are located near
the battery. The main switch is used only when 12 V are
available.
When 230 V is used 12 V is automatically connected
through the battery charger.
Main switch 12 V
Main switch
12 V
Fuse holder main fuses
Fuse
20 A
Fuse
20 A
Fuse
20 A
Fuse
10 A
Fuse
10 A
The battery is charged with a 17 A battery charger (access
to 230 V required), or from the car's alternator.
The charging from the car will only work if a 13-pins
electrical connector is installed on the car. If charging does
not work, contact an authorized car repair shop to control
that the 13-pin connector of the car is properly connected.
Due to the relatively large load on the battery when the
caravan is in use, the battery must be charged every 3-5
days. There is good reason to be sparing with the power
output if there is no potential for continuous charging of
the caravan battery.
+12 V Supply
- 12 V Supply
+12 V Supply charging
from car
+12 V Supply lighting,
sockets, etc.
+12 V Supply lighting,
sockets, etc.
31

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