KeContact P20 Installation guidelines
Installation manual, Version: 1.41 / Article no.: 90064 13
© KEBA 2012-2013
3.2 Specifications for the electrical connection
General
The charging station is set to 10 amps in the delivery state. Set the maximum EVSE current
capacity by setting the DIP-switches in coordination with your installed line circuit breaker
(see chapter “DIP-switch settings”).
The mains supply line must be hardwired to an existing house installation and correspond to
the nationally applicable legal conditions.
Selection of the RCD circuit breaker:
Each charging station must be connected to a separate RCD circuit breaker. No other
circuits may be connected to this RCD circuit breaker.
RCD circuit breaker of at least Type A
In derogation with this, a RCD circuit breaker Type B can be a requirement by the ve-
hicle manufacturer. If the electric vehicles are not known (e.g., semi-public area), the
use of an RCD circuit breaker Type B is useful.
The nominal current I
N
must be selected to match the line circuit breaker and the
fuse.
Dimensioning the Line circuit breaker:
When dimensioning the line circuit breaker also observe the increased environmental tem-
peratures in the switching cabinet! Under certain circumstances, this may require a reduction
of the preadjusted charging current setting to increase the system availability.
Maximum value according to the type plate data matching to the DIP-switch settings
of the preadjusted charging current value.
Determine the nominal current in accordance with the specifications on the type plate,
in coordination with the desired charging current (DIP switch settings for the pre-
adjusted maximum EVSE current capacity) and the mains supply line.
Dimensioning of the mains supply line:
When dimensioning the mains supply line also observe possible reduction factors and the
increased environmental temperatures in the interior connection area of the charging station
(see „Mains supply terminals temperature rating”)! Under certain circumstances, this can
lead to an increase of the cable cross-section and to the adaptation of the temperature resis-
tance of the mains supply line.
Mains disconnector:
The charging station does not have its own power switch. The RCD circuit breaker and the
line circuit breaker of the mains supply line serve as mains disconnector.
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