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Victron MultiPlus 12 3000 120-50 Manual

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EN NL FR DE ES SE Appendix
4.3 Connection of the AC cabling
The MultiPlus 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 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.
Torque: 2 Nm max. 2.3 Nm
The terminal blocks can be found on the printed circuit board, see Appendix A.
4.3.1 Models with 16 A transfer capacity (eg MultiPlus 12/3000/120-16 230 V)
• AC-in
The AC input cable must be connected to the terminal block “AC–in”.
From left to right: “PE” (earth), “L” (phase) and “N” (neutral).
The AC input must be protected by a fuse or magnetic circuit breaker rated at 16 A 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-1".
From left to right: “L” (phase) “N” (neutral) and “PE” (earth).
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 16 A this means that the output can supply up to 16 + 13 = 29 A.
An earth leakage circuit breaker class A 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. The maximum rating of the fuse or circuit
breaker is 32 A.
• 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, e.g. an electric boiler or an air conditioner. The load on AC-out-2 is
disconnected immediately when the Multi switches to battery operation. After AC power becomes available on AC-in-1 or AC-in-2,
the load on AC-out-2 will be reconnected with a delay of approximately 2 minutes. This to allow a genset to stabilise.
AC-out-2 can support loads of up to 16 A. An earth leakage circuit breaker and fuse rated at max. 16A must be connected in series
with AC-out-2.
Note: Loads connected to AC-out-2 will be taken into account in the PowerControl / PowerAssist current limit setting. Loads
directly connected to the AC supply will not be included in the PowerControl / PowerAssist current limit setting.
4.3.2 Models with 50 A transfer capacity (eg MultiPlus 12/3000/120-50 230 V)
• AC-in
The AC input cable can be connected to the terminal block “AC–in”.
From left to right: “L” (phase) “N” (neutral) and “PE” (earth).
The AC input must be protected by a fuse or magnetic circuit breaker rated at 50 A 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: “L” (phase) “N” (neutral) and “PE” (earth).
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 50 A this means that the output can supply up to 50 + 13 = 63 A.
An earth leakage circuit breaker class A 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. The maximum rating of the fuse or circuit
breaker is 63 A.
• AC-out-2
See section 4.3.1.
… 11 …


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