Maslow is equipped with a Grid Code-compliant DC-to-AC inverter that is connected to the house AC mains via appropriate protection devices. This inverter will convert all the DC power supplied to it into AC power up to a maximum of 430W continuous power. Because the DC power source is a battery rather than a solar panel the DC power is both continuous and steady throughout the discharge period, and the battery is capable of providing the full power demanded by the inverter. For this reason the export of AC power is a continuous 430W throughout the export period and does not vary as would be seen with, for example, a solar panel. An internal mechanism ends the export once the battery state-of-charge falls to a pre-set value.
On Maslow units that also support a DC network the export inverter will not switch on if the combined power requirements of the DC network and the inverter would exceed the internal maximum power safety rating. This situation is constantly monitored during the period in which the Maslow is due to export and the inverter is switched ON if the DC network consumption falls sufficiently. It will be switched OFF if the DC network current should once more increase such that the combined power once more exceeds the safety threshold. In this circumstance a delay is added to prevent the inverter continually cycling on and off.
Last updated: 1 April 2015