A Huawei SUN2000 installation is not a direct-connect pairing. Huawei's battery interface is built around its own LUNA2000 battery system, which operates in a 350–560 V DC window on the single-phase L1 range. Most whole EV packs do not sit inside that window across their full state-of-charge range — a Tesla Model 3 pack runs 260–410 V and a BMW i3 pack 260–395 V, both of which fall below the lower bound at mid and low SoC.
A BMS-EV Huawei installation therefore requires a DC/DC converter between the battery pack and the inverter's battery input, sized for the pack voltage range and the inverter's rated battery power. That converter is an additional component in the bill of materials and an additional conversion stage in the energy path — expect a round-trip efficiency penalty compared with a direct-connect inverter such as SOFAR HYD, Deye SG01HP3 or GoodWe ET, all of which accept the pack voltage directly.
If you are choosing an inverter for a new build, a direct-connect HV inverter is the simpler and more efficient path. The Huawei option exists for installations where a SUN2000 is already in place and replacing it is not practical. Contact BMS-EV before ordering so the converter can be specified for your pack.