ABB Terra 24, Руководство по установке, Страница: 58 / 81

TERRA DC WALLBOX
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Important steps to ensure project success include:
1. Identify the grid configuration at the location where the DC Wallbox will be installed.
If the grid configuration available is not okay for use with the DC Wallbox, then determine
how to establish the required grid connection. A transformer solution offered by ABB is
available to derive the required grid configuration when the required grid configuration is
not available. Contact your local ABB sales representative for more details.
2. Select the 1-phase or 3-phase variant of the DC Wallbox according to Section 1.3
titled Terra DC Wallbox hardware ordering details based on Step 1 above.
3. Carefully execute a project plan to ensure the correct variant of DC Wallbox is used
on the project and that the project
site’s grid configuration is compatible with the DC
Wallbox.
4. Verify the actual grid configuration the DC Wallbox is installed in matches the
described criteria during the DC Wallbox commissioning.
3.2.2
Overcurrent protection device
Each variant of the DC Wallbox is recommended to be fed by the circuit breaker or fuse ratings
shown below.
•
3-phase, 480Y/277V DC Wallbox variant: 3-pole, 50A circuit breaker or fuses
3.2.3
Conduit for power input wires
Each variant of the DC Wallbox supports up to a 1-1/4” trade size conduit connection.
3.2.4
Specification for power input wires
The exact size and type of wires used must be defined by the customer and be protected by cus-
tomer provided overcurrent protection according to local codes and regulations.
The input terminals for 3-phase UL variants of the DC Wallbox accept a range of wire sizes from 10
AWG to 0 AWG. Wire terminals are rated 75C.
The 3-phase UL variant DC Wallbox requires Three (3) phase wires, One (1) neutral wire, and One
(1) wire for protective earth. (3W+N+G)
All wires for 3-phase variants of the DC Wallbox may connect directly to the ABB provided termi-
nals, with exception to the protective earth wire. The protective earth wire requires for the installer
to crimp a terminal onto it using the terminal manufacturer’s recommended crimp procedure and
tool.
The integrity of the electrical grounding is essential. Ensure that the equipment grounding terminal
is used in the device and an actual grounding conductor is installed to provide a path back to the
source upstream panel. (Do not use the conduit or raceway as the sole equipment grounding con-
ductor).