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.

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.