Connection Of The Ac Cabling; Optional Connections; Second Battery - Victron energy Phoenix MultiPlus 24/3000/70 User Manual

4.5 Connection of the AC cabling

This is a Safety Class I product (supplied with a protective grounding
terminal). Uninterruptible protective grounding must be provided at the
AC input and/or output terminals and/or chassis grounding point
located externally on the product. See the following instructions:
The MultiPlus: the output neutral wire will automatically be bonded to
the chassis (with the output ground relay, see appendix) when no
external AC source is available (backfeed / safety relay open and product
runnig in inverter mode, see appendix). When an external AC source is
provided, the ground relay opens before closure of the backfeed / safety
relay. Once closed, the backfeed / safety relay ensures that the neutral to
ground bond is provided by the external AC source. This is to ensure
proper functioning of a GFCI to be installed in the AC output of the
Multi/MultiPlus.
- In a fixed (for example terrestrial) installation an uninterrupted chassis
ground may be provided by the AC input ground wire.
- In case of a mobile installation (connection to input AC with a shore power
cord), the ground connection is lost when the shore power cord is
unplugged. In this case the chassis of the product or the on - board section
of the input ground wire must be connected to the frame (of the vehicle) or
the ground plate or hull (of a boat).
- Marine applications: due to the potential for galvanic corrosion it is in
general not acceptable to connect the shore side ground to the ground
plate or hull of the boat. The proper and safe solution is to install an
isolation transformer.
The terminal block can be found on the printed circuit board, see Appendix 0. The
shore or mains cable must be connected to the Multi with the aid of a three-wire cable.
Use a three-wire cable with a flexible core and a cross section of 2.5 or 4 mm²
Procedure
Proceed as follows to connect the AC cables:
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 AC input cable can be connected to the terminal block "AC–in".
•
From left to right: "PE" (earth), "N" (neutral) and "L" (phase).

4.6 Optional Connections

A number of optional connections are possible:

4.6.1 Second Battery

The MultiPlus has a connection for charging a starter battery. For connection see
Appendix 0.
15