Victron energy MultiPlus Series, Service Manual

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3
EN
ES
A
ppendi
x
Use a torque wrench with insulated box spanner in order to avoid shorting the
battery.
Maximum torque: 11 Nm
Avoid shorting the battery cables.
•
Undo the four screws at the front of the enclosure and remove the front panel.
•
Connect the battery cables: see Appendix A.
•
The connector goes on first, then the flat washer, lock washer and nut. Tighten the nuts well for minimal contact resistance.
2.3 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.
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.
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
with the aid of a three-wire 90ºC (194ºF) copper cable. Minimum torque 5.1Nm.
AC-in AC-Out-1 AC-OUT-2
Rated current 50A 75A 25A
Recommend fuse or circuit breaker 50A 75A 32A
Minimum wire gauge AWG 6 AWG 6 AWG 10
•
AC-in (see appendix A)
The AC input cable can be connected to the terminal block “AC–in”.
From left to right: “PE” (earth), “N” (neutral) and “L” (phase).
The AC input must 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 lower value, the fuse or magnetic circuit breaker should be down sized
accordingly.
•
AC-out-1 (see appendix A)
The AC output cable can be connected directly to the terminal block "AC-out".
From left to right: “PE” (earth), “N” (neutral) and “L” (phase). The Output Neutral is not bonded to ground.