Connection Of The Ac Cabling; Optional Connections; Remote Control - Victron energy MultiPlus-II 230V Manual

4.3. Connection of the AC cabling

The MultiPlus-II is a safety class I product (supplied with a ground terminal for safety purposes). Its AC input
and/or output terminals and/or grounding point on the outside of the product must be provided with
an uninterruptible grounding point for safety purposes.
The MultiPlus-II is provided with a ground relay (relay H, see appendix B) that automatically connects the
Neutral output to the chassis if no external AC supply is available. If an external AC supply is provided,
the ground relay H will open before the input safety relay closes. This ensures the correct operation of an
earth leakage circuit breaker that is connected to the output.
• In a fixed installation, an uninterruptable grounding can be secured by means of the grounding wire of the
AC input. Otherwise the casing must be grounded.
• In a mobile installation (for example, with a shore current plug), interrupting the shore connection will
simultaneously disconnect the grounding connection. In that case, the casing must be connected to the
chassis (of the vehicle) or to the hull or grounding plate (of the boat).
In case of a boat, direct connection to the shore ground is not recommended because of potential galvanic
corrosion. The solution to this is using an isolation transformer.
Recommended torque: 1.6 Nm
This unit or system is provided with fixed trip limits and shall not be aggregated above 30 kw on a single point
of common connection.
A blade tool of 2.5mm (e.g. a screwdriver) is required to operate the spring loaded AC terminal blocks.
The terminal blocks can be found on the printed circuit board, see Appendix A.
Do not invert neutral and phase when connecting the AC.
The inverter does incorporate a mains frequency isolating transformer. This precludes the possibility of DC current at any AC port.
Therefore type A RCD's can be used.
• AC-In
The AC input cable can be connected to the terminal block 'AC–in'.
From left to right: "N" (neutral), "PE" (earth) and "L" (phase)
The AC input must be protected by a fuse or magnetic circuit breaker rated at 32 A (for 3 kVA model), 50 A (for 5 kVA
model) and 100 A (for 8 kVA and 10 kVA model) or less, and cable cross-section must be sized accordingly. If the input
AC supply is rated at a lower value, the fuse or magnetic circuit breaker should be down sized accordingly.
• AC-out-1
The AC output cable can be connected directly to the terminal block 'AC-out'.
From left to right: "N" (neutral), "PE" (earth) and "L" (phase)
With its PowerAssist feature the Multi can add up to 3 kVA (that is 3000 / 230 = 13 A) to the output during periods of peak
power requirement. Together with a maximum input current of 32 A this means that the output can supply up to 32 + 13 = 45 A.
An earth leakage circuit breaker and a fuse or circuit breaker rated to support the expected load must be included in series with
the output, and cable cross-section must be sized accordingly.
• AC-out-2
A second output is available that disconnects its load in the event of battery operation. On these terminals, equipment is
connected that may only operate if AC voltage is available on AC-in-1, e.g. an electric boiler or an air conditioner. The load on
AC-out-2 is disconnected immediately when the MultiPlus-II switches to battery operation. After AC power becomes available
on AC-in-1, the load on AC-out-2 will be reconnected with a delay of approximately 2 minutes. This to allow a genset to
stabilise.

4.4. Optional Connections

A number of optional connections are possible:

4.4.1. Remote Control

The product can be remotely controlled in two ways.
• With an external switch (connection terminal M, see appendix A). Operates only if the switch on the MultiPlus-II is set to "on".
• With a Multi Control panel (connected to one of the two RJ45 sockets L, see appendix A). Operates only if the switch on the
MultiPlus-II is set to "on".
Page 14
MultiPlus-II 230V
Installation