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4.4.2. Preparing the mains cable
The hypercharger charging stations can be used in TT and TN-S, TN-C and TN-CS type
supply networks.
Warning
The necessary protective measures against electric shock and other
country-specific requirements must be taken into account and
implemented before the charging station is put into operation.
Depending on the grid configuration, a protective earth current of >10 mA
may flow. This must be taken into account when designing the protective
earthing and protective measures.
Due to the leakage current, a minimum protective conductor cross section
of ≥ 10 mm² CU or ≥ 16 mm² AL is required.
If a residual current device (RCD) must be installed in the supply line (as
is usually required for installations in TT grid), an RCD type B or an
equivalent protective device against DC residual currents (e.g. RCD
type A in conjunction with a suitable device for disconnecting the supply
in the event of DC residual currents > 6mA) must be installed.
Type B having a typical I
ΔN
= 300 mA is recommended. Type B with I
ΔN
=
100 mA is also suitable if it is not possible to ensure an adequate low
value of the earth resistance, R
earth
.
No unexpected trip of the RCD device
will occur in the case of coupling HYC50 with this size of differential
protection.
This product is designed for type A environments (interfering emissions),
the immunity is equivalent to type A environments.
Any external signals that can be connected as an option may only be
designed and connected as SELV signals.
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