KOSTAL BackUp Switch – manual switch

The inverter with battery enables the house grid to continue to be supplied with energy via PV and battery if there is a power failure.

For this to work, a separation point must be installed at the grid connection point in the house grid and must signal the backup mode to the inverter via a signalling contact.

KOSTAL Solar Electric GmbH offers the KOSTAL BackUp Switch (manual switch), which manually disconnects the public grid from the house grid in backup mode.

Other, automatic solutions are offered by third parties.

INFO

Use of the KOSTAL BackUp Switch (three-phase) with PLENTICORE MP G3

The KOSTAL BackUp Switch comes as a three-phase variant (KOSTAL BackUp Switch) for three-phase grids and a single-phase variant (KOSTAL BackUp Switch MP) for single-phase grids.

If the PLENTICORE MP G3 is run in a three-phase grid with the KOSTAL BackUp Switch (three-phase variant), ensure that the inverter and all key consumer devices are connected on the same phase. There is no interconnection between the phases. Three-phase grids are only supplied as single-phase in backup mode.

Be aware of the following points:

• The power in backup mode depends on the installed PV power and the available battery power.
• It is not possible to use all consumers in backup mode.
• The inverter only switches to backup mode when the conditions are met. This means that the consumers must not exceed the power limits available in backup mode. In this case, reduce the consumption (shut down consumers) so that the inverter can switch to backup mode.
• The unbalanced phase load (power difference between the individual phases) must not exceed a certain value.
• The backup mode function must be activated in the inverter's Webserver.