Victron energy BLUE POWER MultiPlus-II 12 3000 120-32 Manuel page 12

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.
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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
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 Quattro 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".
4.4.2. Programmable relay
The product is equipped with a programmable relay.
The relay can be programmed for all kinds of other applications however, for example as a starter relay for a generator.
4.4.3 Programmable analog/digital input/output ports
The product is equipped with 2 analog/digital input/output ports.
These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery.
4.4.4 Starter battery (connection terminal E, see appendix A)
The Multiplus-II has a connection for charging a starter battery. Output current is limited to 4 A.
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