Victron energy MultiPlus 12/3000/120 Anleitung Seite 13

4.3 Connection of the AC cabling
The MultiPlus is a safety class I product (supplied w ith a ground terminal for
safety purposes). Its AC input and/or output terminals and/or
grounding point on the outside of the product m ust be provided w ith
an uninterruptible grounding point for safety purposes.
The MultiPlus is provided w ith a ground relay (relay H, see appendix B) that
autom atically 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 w ill 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 w ire of the AC input. Otherw ise the casing
must be grounded.
─
In a mobile installation (for example, w ith a shore current plug),
interrupting the shore connection w ill 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.
The terminal blocks can be found on the printed circuit board, see Appendix A. The shore or mains cable must be connected to the Multi
w ith the aid of a three-wire cable.
4.3.1 Models w ith 16A transfer capacity (eg MultiPlus 12/3000/120
•
AC-in
The AC input cable can be connected to the terminal block "AC–in".
From left to right: "PE" (earth), "L" (phase) and "N" (neutral).
The AC input m ust be protected by a fuse or magnetic circuit breaker rated at 16A or less, and cable cross-section must
be sized accordingly. If the input AC supply is rated at a low er value, the fuse or magnetic circuit breaker should be dow n 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 Pow erAssist feature the Multi can add up to 3kVA (that is 3000 / 230 = 13A) to the output during periods of peak pow er
requirement. Together w ith a maximum input current of 16A this means that the output can supply up to 16 + 13 = 29A.
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. The maximum rating of the fuse or circuit breaker
is 32A.
•
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 or AC-in-2, e.g. an electric boiler or an air conditioner. The load on AC-
out-2 is disconnected immediately w hen the Multi sw itches to battery operation. After AC power becomes available on AC-in-1 or
AC-in-2, the load on AC-out-2 w ill be reconnected w ith a delay of approximately 2 minutes. This to allow a genset to stabilise.
AC-out-2 can support loads of up to 16A. An earth leakage circuit breaker and fuse rated at max. 16A must be connected in series
w ith AC-out-2.
Note: Loads connected to AC-out-2 w ill be taken into account in the Pow erControl / Pow erAssist current limit setting. Loads
directly connected to the AC supply w ill not be included in the Pow erControl / Pow erAssist current limit setting.
4.3.2 Models w ith 50A transfer capacity (eg MultiPlus 12/3000/120
•
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 m ust be protected by a fuse or magnetic circuit breaker rated at 50A or less, and cable cross-section must
be sized accordingly. If the input AC supply is rated at a low er value, the fuse or magnetic circuit breaker should be dow n 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 Pow erAssist feature the Multi can add up to 3kVA (that is 3000 / 230 = 13A) to the output during periods of peak pow er
requirement. Together w ith a maximum input current of 50A this means that the output can supply up to 50 + 13 = 63A.
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. The maximum rating of the fuse or circuit breaker
is 63A.
•
AC-out-2
See section 4.3.1.
-16
230V)
-50
230V)
9