Bedienungsanleitung Victron MultiPlus 48 3000 35-50 (Seite 4 von 164) (Deutsch, Englisch, Holländisch, Französisch, Spanisch, Schwedisch)

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2. DESCRIPTION

2.1 In general

The basis of the MultiPlus is an extremely powerful sine inverter, battery charger and automatic switch in a compact casing.

The MultiPlus features the following additional, often unique characteristics:

Automatic and uninterruptible switching

In the event of a supply failure or when the generating set is switched off, the MultiPlus will switch over to inverter operation and take

over the supply of the connected devices. This is done so quickly that operation of computers and other electronic devices is not

disturbed (Uninterruptible Power Supply or UPS functionality). This makes the MultiPlus highly suitable as an emergency power system

in industrial and telecommunication applications. The maximum alternating current that can be switched is 16 A or 50 A, depending on

model.

Auxiliary AC output

Besides the usual uninterruptable output, an auxiliary output is available that disconnects its load in the event of battery operation.

Example: an electric boiler that is allowed to operate only if the genset is running or shore power is available.

Three phase capability

Three units can be configured for three-phase output. But that’s not all: up to 6 sets of three units can be parallel connected to provide

45 kW / 54 kVA inverter power and more than 1000A charging capacity.

PowerControl – maximum use of limited shore current

The MultiPlus can supply a huge charging current. This implies heavy loading of the shore connection or generator set. Therefore a

maximum current can be set. The MultiPlus then takes other power users into account, and only uses 'surplus' current for charging

purposes.

PowerAssist – Extended use of your generator and shore current: the MultiPlus “co-supply” feature

This feature takes the principle of PowerControl to a further dimension allowing the MultiPlus to supplement the capacity of the

alternative source. Where peak power is so often required only for a limited period, the MultiPlus will make sure that insufficient shore or

generator power is immediately compensated for by power from the battery. When the load reduces, the spare power is used to

recharge the battery.

This unique feature offers a definitive solution for the ‘shore current problem’: high power electric tools, dish washers,

washing machines, electric cooking etc. can all run on 16 A shore current, or even less. In addition, a smaller generator can be

installed.

Programmable relays

The models with 16 A transfer capacity (see section 4) are equipped with one programmable relay that by default is set as an alarm

relay. The relay can be programmed for all kinds of other applications however, for example as a starter relay for a generator.

The models with 50 A transfer capacity are equipped with three programmable relays.

Programmable analog/digital input/output ports

The models with 16 A transfer capacity (see section 4) are equipped with one, and the models with 50 A transfer capacity are equipped

with 2 analog/digital input/output ports.

These ports can be used for several purposes. One application is communication with the BMS of a lithium-ion battery.

Frequency shift

When solar inverters are connected to the output of a Multi or Quattro, the excess solar energy is used to recharge the batteries. Once

the absorption voltage is reached, the Multi or Quattro will shut down the solar inverter by shifting the output frequency 1 Hz (from 50 Hz

to 51 Hz for example). Once battery voltage has dropped slightly, the frequency returns to normal and the solar inverters will restart.

Built-in Battery Monitor (optional)

The ideal solution when Multi’s or Quattro’s are 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:

- Start at a preset % discharge level, and/or

- start (with a preset delay) at a preset battery voltage, and/or

- start (with a preset delay) at a preset load level.

- Stop at a preset battery voltage, or

- stop (with a preset delay) after the bulk charge phase has been completed, and/or

- stop (with a preset delay) at a preset load level.

Solar energy

The MultiPlus is extremely suitable for solar energy applications. It can be used in autonomous systems as well as grid connected

systems.

Autonomous operation when the grid fails

Houses or buildings with solar panels or a combined micro-scale heating and power plant or other sustainable energy sources have a

potential autonomous energy supply which can be used for powering essential equipment (central heating pumps, refrigerators, deep

freeze units, Internet connections, etc.) during a power failure. A problem is however that grid connected sustainable energy sources

drop out as soon as the grid fails. With a MultiPlus and batteries, this problem can be solved in a simple manner: the MultiPlus can

replace the grid during a power failure. When the sustainable energy sources produce more power than needed, the MultiPlus will

use the surplus to charge the batteries; in the event of a shortfall, the MultiPlus will supply additional power from the battery.

For more information see our white papar Self Consumption or Grid independence with the Victron Energy Storage Hub.

The appropriate software can be downloaded from our website.

Victron MultiPlus 48 3000 35-50 Seite 4

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