How will an installer connect back up circuits, on my Dura-I?

First of all the amount of power that the inverter can support is based on two things.

1.The size of the Inverter,
will have a maximum amount of power that it can process from DC (Battery and Solar power) to AC (normal power), this is provided in Amps.

Inverter Backup output capabilities are as follows:

• 3.6KVA – 13.1A
• 4.6KVA – 18A
• 5KVA – 21.7A
• 6KVA – 26.1A

Backup must be switched on in settings for critical loads to receive constant power supply.

2.The Amount of storage you have, will dictate how long the inverter can support these circuits, taking into account the number of batteries and the current SOC (state of charge) that the batteries are at.

The installer would then select and connect individual circuits to a sperate Sub Distribution Board (fuse board) that would get power from the ‘back up’ port. (only to the max limits already specified).

This now means that in a power cut, those specific critical circuits will continue to run for as long as the batteries will last them.

Please note, within the Dura-I App the installer must activate this setting, also an additional earth point is a requirement to prevent islanding.