BluePower Pro - Victron Forums

Find answers, ask questions, and connect with the Victron community around the world.

  • Load Behavior on AC-out-2 During Switch to Battery Operation in MultiPlus-II?

    Posted by Grippe on January 14, 2024 at 8:01 pm
    Up
    0
    Down
    ::

    Can you explain what occurs to the devices connected to the AC-out-2 terminals when my MultiPlus-II 230V switches to battery operation?

    PaladinOfLight replied 5 months, 2 weeks ago 3 Members · 2 Replies
  • 2 Replies
  • Lumin

    Member
    January 15, 2024 at 4:52 am
    Up
    0
    Down
    ::

    Devices connected to AC-out-2 will be immediately disconnected when the MultiPlus-II switches to battery operation.

    This is designed for non-essential loads that should only operate when external AC power is available, such as an electric boiler or air conditioner.

    Once AC power is restored to AC-in-1, the MultiPlus-II will reconnect the load to AC-out-2 after a delay of approximately 2 minutes, allowing for stabilization of a genset if one is being used.

  • PaladinOfLight

    Member
    January 15, 2024 at 5:10 am
    Up
    0
    Down
    ::

    The AC-out-2 terminal on your MultiPlus-II 230V serves a very specific purpose and behaves in a particular way during power transitions:

    Purpose of AC-out-2 Terminal: This terminal is intended for devices that should not operate without external AC power. It’s perfect for non-essential loads or those that consume a lot of power, like electric boilers or air conditioners—appliances you don’t want to drain your battery if the shore power fails or is disconnected.

    Behavior During Power Switch to Battery: When the MultiPlus-II transitions from external AC power to battery operation, any devices connected to the AC-out-2 terminal will be immediately disconnected. This is an automatic response to protect your battery reserve by shedding loads that are not critical.

    Reconnection Delay: Once external AC power is available again at the AC-in-1 terminal, the MultiPlus-II doesn’t reconnect the load to AC-out-2 instantaneously. Instead, there’s a programmed delay of about 2 minutes before reconnection. This delay serves a dual purpose:

    • It allows for any connected generator (genset) to reach a stable output after starting up. Generators often need a short period to stabilize their voltage and frequency before they can reliably supply power to sensitive loads.

    • It ensures that the external power source is stable and not just a brief return of power that could cause further disruptions if it were to fail again immediately.

    System Protection and Efficiency: This feature of the MultiPlus-II protects the system from unnecessary power drains and potential damage from unstable power sources. It also helps maintain the efficiency of your power management by ensuring that only essential loads draw on the battery reserve during an outage.

Log in to reply.