User manual

Installation guidelines
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3.2.2 Differing Z.E.-Ready / E.V. Ready requirements
● In the event that the internal switching element (contactor) is no longer able to open, an additional
switch-off capability must be realized. This can be realized with the switch contact output [X2] (for details
see Chapter "↪ 4.5.4 Switch contact output [X2] (excluding e-series) [27]").
● No 13A charging cables may be used.
● For 3-phase connection of the charging station, the device version KC-P30-xxxxxxx2-xxx or at least a
residual-current device (RCD) type A with DC residual-current detection (>6 mA) or a residual-current
device (RCD) type B must be used.
Requirements for the selection of the line circuit breaker:
Charging
current
specification
Line circuit breaker Characteristic
(DIP switch) 1-phase 3-phase
10 A Not allowed
13 A Not allowed
16 A 20 A Not allowed C
20 A 25 A B / C C
25 A 32 A B / C C
32 A 32 A B / C C
The nominal current of the selected line circuit breaker must never exceed the specifications on
the type plate. If the charging current specification and nominal current of the line circuit breaker
are equal, the temperature in the switch cabinet must be specifically observed (thermal derating of
the line circuit breaker).
Mains supply and grounding requirements (Z.E.-Ready/E.V. Ready)
● TT and TN networks: The grounding resistance of the system must be less than 100 Ohm, or lower if re-
quired by national regulations.
● TT networks: With a grounding resistance greater than 100 Ohm, an isolating transformer must be in-
stalled before the EVSE (Electric Vehicle Supply Equipment) installation. The isolating transformer must
then be integrated into a TN grounding system, for which the criteria above applies.
● IT networks: Power supplies with IT grounding systems are forbidden.
● In TT and TN networks, the voltage at the N conductor to PE must not be higher than 10 V.
● If several charging stations are connected to the same power supply, local ground connections must
also be established (at least every 10 outputs).
The maximum grounding resistance for each additional ground connection (measured independently)
must be less than 100 Ohm. All ground connections must be connected to ensure a single potential.
● An excessive proportion of harmonic waves can terminate the charging procedure. The public mains
power supply should fulfill the standards IEC 61000-2-1, IEC 61000-2-2, EN 50160 § 4.2.4 and § 4.2.5
to prevent this problem. The maximum permitted limit of harmonic waves can vary in dependence on the
mains network impedance.
en