Scenario 1: Single or multi-rack without LVRT requirement

The figure below shows the wiring schematics for grid protection and coupling contactor for a single or multiple BAT-80/BAT-80 AC battery racks and without LVRT requirement. You'll find a figure legend later in this section.

The following table is a legend for the figure above:

Legend for the wiring schematics showing single or multi-rack without LVRT

Number

Description

1

Single-phase supply from the public grid – used to power the ABB grid protection relay.

2

1P 6A protection fuse (or MCBClosed Miniature Circuit Breaker) – protects the power supply to the ABB CM-UFD.M31(M) grid protection device.

3

ABB CM-UFD.M31(M) grid protection relay – monitors voltage and frequency at the point of common coupling (PCC).

4

3P 10A protection fuses (or 3-phase MCB) – secure the measuring circuit of the CM-UFD.M31(M) relay.

5

Point of Common Coupling (PCC) – the grid connection point for voltage and frequency monitoring.

6

Protection fuses for XOLTA BAT-80. See the XOLTA BAT-80 and BAT-80 AC installation manuals for specifications: https://xolta.com/manuals/.

7

1P 10A protection fuse (or MCB) – required for each active relay (R1, R2, R3) on the grid protection device.

8

Schneider Electric Acti 9 iCT contactor – 4-pole, 100 A, 230 V AC coil, 4NO, used for battery coupling.

9

XOLTA BAT-80 is used in this example, but it can also be BAT-79 or BAT-80 AC.

10

Three-phase grid connection – 3 × 230 V AC + Neutral from the public grid.