Interface Protection

An IPSD (Inverter Power Sharing Device) manages the distribution of power from a single PV system to various apartments or units. For example, a 40 kW PV system on a building’s roof can supply eight apartments. The IPSD controls how this energy is shared...

EV Supply Equipment (EVSE) is essential for electric vehicles (EVs), influencing how they connect with the grid or other loads. It comes in two main types: DC EVSE and AC EVSE. Each type serves different needs and offers unique functionalities: DC EVSE This type...

One significant change involves ganged devices, particularly when isolating inverter systems. Previously, each inverter required separate isolation, which could be cumbersome. Now, if you have more than two Inverter Energy Systems (IESs) connected to a switchboard and those IESs are on a ganged switch,...

The new AS/NZS 4777.1:2024 standard introduces a key change: interface protection now replaces central protection. This update is crucial for commercial and industrial PV systems, especially for those under 200 kVA. By raising the threshold and focusing on interface protection, the standard offers several...