Description; Features - Victron energy MultiPlus-II Manual

MultiPlus-II inverter/charger off-grid Australia

2. Description

The MultiPlus-II GX is an extremely powerful sine inverter, battery charger and transfer switch together with a GX card with a
2x16-character display in a compact casing.
This unit is for use in off-grid applications such as, marine, automotive, as well as stationary land-based applications.
This manual applies to:
• MultiPlus-II 48/3000/35-32 230V GX
• MultiPlus-II 48/5000/70-50 230V GX

2.1. Features

GX LCD display
A backlit 2 x 16 character display screen shows system parameters.
Automatic and uninterruptible switching
If the AC generator is switched off or fails, the MultiPlus-II will switch over to inverter operation and take over the supply of
the connected devices. This is done so quickly that the operation of computers and other electronic devices is not disturbed
(Uninterruptible Power Supply or UPS functionality). This makes the MultiPlus-II highly suitable as an emergency power system in
off-grid, industrial and telecommunication applications.
Two AC outputs
Besides the usual uninterruptible output (AC-out-1), an auxiliary output (AC-out-2) is available that disconnects its load in the
event of battery operation. Example: an electric boiler that is allowed to operate only if the generator is running. There are several
applications for AC-out-2.
Please enter "AC-out-2" in the search box on our website and find the latest information about other applications.
Three phase capability
Three units can be configured for three-phase output. Up to 6 sets of three units can be parallel connected.
PowerControl – maximum use of limited AC power
The MultiPlus-II can supply a huge charging current. This implies heavy loading of the generator. Therefore a maximum current
can be set. The MultiPlus-II then takes other power users into account and only uses "surplus' current for charging purposes.
PowerAssist – Extended use of generator or shore current: the MultiPlus-II "co-supply" feature
This feature takes the principle of PowerControl to a further dimension, allowing the MultiPlus-II to supplement the capacity of the
alternative AC source. Where peak power is often required only for a limited period, the MultiPlus-II will make sure that insufficient
generator power is immediately compensated for by power from the battery. When the load reduces, the spare power is used to
recharge the battery.
VE.Can port
This port allows a connection of compatible 500 kbps CAN-bus BMS batteries or VE.Can products.
Ethernet and Wifi
Ethernet and WiFi connections allow for local and remote system monitoring, as well as connection to Victron's free VRM portal
for long-term system performance information.
Programmable relay
The MultiPlus-II is equipped with a programmable relay. The relay can be programmed for different applications, for example, as a
starter relay for a generator.
External current transformer (optional)
External current transformer option to implement PowerControl and PowerAssist with external current sensing.
Frequency shift
When AC solar inverters are connected to the output of a MultiPlus-II, excess solar energy is used to recharge the batteries.
Once the absorption voltage is reached, the MultiPlus-II will slightly increase the AC frequency to reduce the output of the solar
inverter.
Built-in Battery Monitor
The ideal solution when the MultiPlus-II is part of a hybrid system (diesel generator, inverter/chargers, storage battery, and
alternative energy). The built-in battery monitor can be set to start and stop the generator:
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