EC700 Power Control System
Issue: 1
Page 9 of 17
1
st
October 2017
3.2 Generator Usage
Caution should be used before connecting a generator to your motorhome.
WARNING
Never start or stop the generator while electrical loads are connected and switched on. Start the engine,
let it stabilise and then connect the electrical load. When stopping the generator, disconnect the electrical
load and let engine stabilise before switching off.
Whilst some generators use electronic inverter technology, others use a more basic principle to generate
the 230V supply. Preference should be to choose a generator which produces a consistent sinusoidal
wave form with accurate voltage control.
The Reverse Polarity warning light on the PSU may illuminate when using a Generator. This is a normal
side effect when using some types of generator. Instead of connecting the neutral conductor to earth,
some generators centre tap the earth connection making both neutral and live conductors 110V above
earth. This 110V difference causes the neon polarity indicator to illuminate.
In most cases it is safe to use a generator, but please consult the generator handbook for further
information.
3.3 Battery Charger
The system incorporates an intelligent three-stage battery charger.
During stage 1 the battery voltage is increased gradually while the current is limited to start the charging
process and protect the battery. At stage 2 the voltage rises to 14.4V to deliver the bulk charge to the
battery. When the battery is charged, the voltage is decreased at stage 3 to 13.6V to deliver a float
charge to maintain the battery in the fully charged state. The charger can be left switched on
continuously as required.
The battery charger / power converter also provides power to the leisure equipment when the mains
supply is connected. This module supplies DC to the leisure equipment up to a maximum of 25 Amps
(300 Watts), therefore the available power is distributed between the leisure load and the battery, with
the leisure load taking priority as per the following example:
Leisure load
Available power for battery charging
5A
20A
10A
15A
15A
10A
20A
5A
WARNING
Under heavy loads the Battery Charger case may become hot. ALWAYS ensure the ventilation slots
have a clear flow of air. Do not place combustible materials against / adjacent to the charger.
