Connection schematics – single-line diagrams and components

The following figures show single-line diagrams for a single and multi-rack installation of XOLTA battery systems.

Each battery rack requires a single Schneider ACTI 100A contactor.

The ABB grid protection relay (CM-UFD.M31) includes three relay outputs (R1, R2, R3). Each output can control up to six Schneider iCT 100A contactors. This allows a single ABB relay to support installations with up to 18 racks.

Use the table below to determine the required components:

Required number of components for different BAT-80 installations

Example	Required installation	Required Schneider ICT 100A contactors	Required number of ABB CM-UFD.M31 grid protection devices
1	1 x BAT-80	1	1 (1x ICT 100A wired to R1)
2	6 x BAT-80	6	1 (6x ICT 100A wired to R1)
3	12 x BAT-80	12	1 (6x ICT 100A wired to R1) (6x ICT 100A wired to R2)
4	18 x BAT-80	18	1 (6x ICT 100A wired to R1) (6x ICT 100A wired to R2) (6x ICT 100A wired to R3)
5	24 x BAT-80	24	2 (6x ICT 100A wired to R1 of grid protection 1) (6x ICT 100A wired to R2 of grid protection 1) (6x ICT 100A wired to R3 of grid protection 1) (6x ICT 100A wired to R1 of grid protection 2)

Next, connect the ABB CM-UFD.M31(M) relay according to the diagram below. For a complete overview of terminal functions, see the table below.

A detailed description of the connectors that are used with the XOLTA battery systems are shown in the table below:

Description of the electrical connections for ABB CM-UFD.M31M

Electrical connection	Description
A,B,C	Modbus RTU (only in versions CM-UFD.M31M and CM-UFD.M33M) Note: Not to be connected.
Y1, Y2, Y3, Y0	Feedback signals from switching devices corresponding to relays R1, R2, R3 Note: Not to be connected.
A1, A2	Supply voltage (either 230V AC or 24V DC). Note: Power systems where LVRT Short for "low voltage ride through". LVRT is the ability of an electrical device - typically a wind turbine or solar inverter - to stay connected to the grid during short periods of low voltage, such as those caused by faults or disturbances. The purpose is to support the grid by remaining online and helping restore normal conditions. isn't required directly with 230V AC. For systems requiring LVRT, supply power via one of the following devices: 1SVR360563R1001 – ABB CP-C.1 24/5.0 1SVR427060R0300 – ABB CP-B 24/3.0
L1, L2, L3, N	Input for voltage monitoring at PCC The connection point between a generating facility (e.g., a battery system) and the utility grid, where power exchange occurs..
1115-1216/1418	Electrical connections for Relay R1: 1115 - Common 1216 – NC Note: Not to be connected. 1418 – NO
2125-2226/2428	Electrical connections for Relay R2: 2125 - Common 2226 – NC Note: Not to be connected. 2428 – NO
3135-3236/3438	Electrical connections for Relay R3. You need to enable it in the settings. 3135 - Common 3236 – NC Note: Not to be connected. 3438 – NO