XW PRO Li-ion Battery Solution Guide

Installation and Commissioning
Protection Coordination
WARNING
RISK OF FIRE, ELECTRIC SHOCK, EXPLOSION, AND ARC FLASH
Installation of the battery must be done by qualified and licensed installers following any
applicable codes and standards and requirements of local authorities. Installers must ensure
that appropriate protection coordination is in place as needed.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
Inrush Current
NOTICE
RISK OF BATTERY AND BATTERY INVERTER DAMAGE
Always follow the recommended start-up sequence and minimum number of batteries as
described in Appendix A. This is required to avoid excessive inrush current.
Failure to follow these instructions can result in equipment damage.
Battery-based inverter/chargers, such as the XW Pro, contain an internal DC link which is
comprised of capacitors. When the DC breaker between the inverter/charger and the battery
is turned On, the inverter/charger draws an inrush current to charge the capacitors. Li-ion
batteries contain a supervisory protection inside the BMS which may trigger an over-current
fault protection to such inrush. For some battery types, multiple battery packs should be
connected to the XW Pro inverter simultaneously to share the inrush current between the
batteries. This is achieved by closing an installed DC disconnect or breaker at the inverter,
after turning on the batteries according to the manufacturer instructions.
BMS Setup
Depending on the battery system brand and the number of battery packs, there might be a
slave BMS present. XW Pro only supports communication with a master BMS and you
must refer to the battery manufacturer's documentation for information on how to set up
slave BMSs to be aggregated into the master BMS.
NOTICE
RISK OF BATTERY DAMAGE
Consult the battery manufacturer's information for handling details if the battery is completely
discharged.
Failure to follow these instructions can result in equipment damage.
Wiring Interface
Wire CAN or RS485 interface of the BMS to the 26-pin connector referring to the below
diagram. RS485 can be connected to either Port 1 or Port 2 on Conext Gateway. Once the
990-6359A This manual is intended for use by qualified personnel 5
XW Pro Li-ion Battery Solution Guide