The final AC distribution point between inverter and grid, with integrated protection.
Our AC Distribution Boards are built to receive inverter output and pass it safely to the grid or plant distribution network. Enclosures are fabricated from 1.5 or 2.0 mm CRCA sheet with modular or draw-out construction, and are offered at IP45 for indoor installation or IP65 where the board sits outdoors alongside the inverter bank.
An ACDB sits immediately after the inverter in a solar installation and forms the last protected point before the supply joins the facility network or the utility grid. It operates at 415 V AC three phase, with ACB or MCCB incomers, AC surge protection and overload protection built in. Separate compartments are provided for the incomer, outgoing feeders, busbar and metering, and digital panel meters with indication lamps allow generation to be monitored at the point of connection.
Straight answers to common questions about the ACDB Panel.
An ACDB sits immediately after the inverter. It receives the inverter output and passes it safely to the grid or plant distribution network, with protection, isolation and surge protection built in.
Because it is fed by a current limited source. A grid tied inverter typically delivers between 1.1 and 1.5 times its rated output as fault current, for a few cycles, so a breaker chosen only against the grid fault current may never trip on the inverter side.
We offer IP45 for indoor installation and IP65 where the board sits outdoors alongside the inverter bank. A sealed outdoor board holds heat, so the thermal design should be checked against the site ambient.
The specification lists AC surge protection and overload protection, with MCCB or ACB incomers, MCCB, MCB or changeover outgoing devices, digital panel meters and indication lamps, at 415 V AC three phase.
Yes, but the board should isolate each inverter individually so one can be worked on while the rest keep exporting.
Send the inverter datasheet figures for rated output and maximum output fault current with its duration, the number of inverters, the grid side fault level and the interface protection your DISCOM requires, which differs between states.
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