Solar Lattice

Architecture

400/230 V three-phase four-wire service

ID
arch:wye-400y-230v
IRI
https://solarlattice.org/kb/arch/wye-400y-230v
Status
active
Also known as
400 V 3P4W, 230/400 V, 3P4W, GriTyp3P4W_400V_LL, 230 V / 400 V
Category
Grid service

This service is a three-phase, four-wire grid connection: three line conductors and a neutral conductor, with a nominal 400 V between any two line conductors. On SMA inverters this connection is selected as the grid type GriTyp3P4W_400V_LL, which is defined by its line-to-line nominal voltage. Three-phase string inverters such as the SMA Sunny Tripower X 12 to 25 list 230 V / 400 V as one of their nominal AC voltages. The same inverters also accept the nearby 220 V / 380 V and 240 V / 415 V systems, so check the actual local grid voltage before you set the grid type.

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