How The Dc Kit Functions - Dometic DC-Kit PP12 Installation And Operating Manual

Technical description
The built-in priority circuit is intended for distributing voltages in vehicles with
two available current supplies. If there is mains voltage present at the device, this
is prioritized. This ensures that the limited power of the battery is not used
unnecessarily. If there is no mains voltage present, the DC on-board supply is
used.
• The remote control can be used to switch the inverter on and off.
The charging current distributor has two relays that are used as follows:
• Power relay (Batt. 1/Batt. 2)
to connect the starter and consumer battery
• Control relay
to switch the compressor on and off
– ECL-76: fig. 1, page 3
– ECL-102: fig. 2, page 4
– ECL-103: fig. 3, page 5
Key for circuit diagrams in fig. 1, page 3 to fig. 3, page 5
Characters in
Explanation
circuit diagram
A Starter battery
B Consumer unit battery
C Remote control
D Ua: switch-off voltage
E Ue: switch-on voltage
F Fuse
6.1

How the DC kit functions

The DC kit measures the light system voltage UD+ and compares this value against
the value of the switch-on voltage Ue.
The voltage value Ue can be adjusted for ECL-76 and ECL-102 (12.5 V – 14.0 V). For
ECL-103, the voltage value Ue is 26.6 V.
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DC-Kit PP12, DSP-T12/24
EN