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Manual: Transport, Installation and Start-Up: DC CompactCharger ECC 320 ©EnerCharge GmbH
ELECTRICAL INSTALLATION ECC 320
7.3 Connection of Mail Supply Line 400 V
Depending on the national regulations of the country of installation, the AC supply line (400 V)
is connected according to the TN-S or TN-C system.
In the TN-C system, the connection of the 400 V supply cable is 4-pole: L1/L2/L3/PEN.
In the TN-S system, the connection of the 400 V supply cable is 5-pole: L1/L2/L3/N/PE.
If the connection is made in accordance with the TN-C system, the ECC 320 has an additional
copper bar (connection PE with N) for the connection of the PEN conductor. This additional
copper bar is installed ex works.
G INFORMATION
Connection AC supply line (400 V) according to TN-S or TN-C system
For the connection of the AC supply line to the switch disconnector, observe the installation instructions
of the manufacturer Siemens:
• Manual switch disconnector: „9.4 Installation of Manual Switch Disconnector“ on page 49.
or
• Motorized switch disconnector: „9.5 Montageanleitung Motorbetriebener Lasttrennschalter“ on page 49.
G INFORMATION
7.3.1 Connection of AC Supply line (400V) with 2 Conductors per Phase
CAUTION
The cable cross-section has a direct inuence on the voltage of the cable used, as each cable has a
certain resistance. Thus, depending on the cable length, there is a voltage loss, which can be com-
pensated by increasing the cable cross-section. An incorrectly dimensioned supply cable can lead to
limited functioning of the charging station.
• Have the design and calculation of the cable cross-section in coordination with the actual cable
length carried out by a specialist electrical company.
Dimensioning of AC Supply Line
7.4 Cable Cross-Sections AC Supply Line
The dimensioning of the cable cross-sections for the AC supply line (400 V) depends on
the type of AC/DC modules installed. EnerCharge offers two different AC/DC modules with
a module power of 20 kW or 40 kW.
Use the sales order to check which AC/DC module type is installed: 20 kW or 40 kW:
• For dimensionig with AC/DC module type 20 kW see: „7.4.1 Cable Cross-Sections AC Main Supply Line - AC/DC Module Type 20 kW“ on page 24.
or
• For dimensionig with AC/DC module type 40 kW see: „7.4.2 Cable Cross-Sections AC Main Supply Line - AC/DC Module Type 40 kW“ on page 24.
G INFORMATION
When connecting the AC supply line to the switch-disconnector with two conductors per phase,
the following equipment is required (Allows connection of two conductors per phase to one
terminal of the switch-disconnector).
• The optional equipment is not included in the scope of delivery and must be obtained via Siemens:
Round conductor terminal for 2 cables: Siemens 3VA9403-0JJ23 - see Fig. 20
LINK: https://mall.industry.siemens.com/mall/de/de/Catalog/Product/3VA9403-0JJ23
G INFORMATION
Fig. 20: Round conductor terminal
Siemens 3VA9403-0JJ23
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