Victron energy MultiPlus 12/800/35 User manual

Manual
EN
Handleiding
NL
Manue
l
FR
Anleitung
DE
Manual
ES
Appendix
MultiPlus 800VA
12 | 800 | 35 220-240V
24 | 800 | 16 220-240V
48 | 800 | 9 220-240V

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1. SAFETY INSTRUCTIONS
General
Please familiarize yourself with the safety features and instructions by first reading the
documentation supplied with this product before using the equipment. This product has been
designed and tested in accordance with international standards. The equipment must be used
exclusively for the purpose for which it was designed.
WARNING: ELECTRIC SHOCK HAZARD.
The product is used in conjunction with a permanent energy source (battery). Input and/or
output terminals may still be dangerously energized, even when the equipment is switched off.
Always switch off the AC supply and the battery before carrying out maintenance or servicing
the product.
The product has no internal user-serviceable components. Do not remove the front plate or
operate the product if any panels have been removed. All servicing must be undertaken by
qualified personnel.
Never use the product where there is a risk of gas or dust explosions. Consult the battery
manufacturer's information to ascertain that the product is intended for use in conjunction with
the battery. Always comply with the battery manufacturer's safety instructions.
WARNING: Do not lift heavy loads without assistance.
Installation
Read the installation instructions in the installation manual before installing the equipment.
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. Alternatively the grounding point located externally on the product may be
used. Whenever it is likely that the grounding protection has been damaged, the product must
be turned off and secured against unintended operation; please contact qualified service staff.
Ensure that the DC and AC input cables are fused or fitted with circuit breakers.
Ensure that the equipment is used under the correct ambient conditions. Never operate the
product in a wet or dusty environment. Ensure there is adequate free space for ventilation
around the product and check that the ventilation vents are not blocked.
Ensure that the required system voltage does not exceed the product's capacity.

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EN NL FR DE ES Appendix
Transport and Storage
Ensure that the mains power and battery leads have been disconnected before storing or
transporting the product.
No liability can be accepted for any transport damage if the equipment is shipped in non-
original packaging.
Store the product in a dry environment; the storage temperature must be between -40°C
and 70°C.
Consult the battery manufacturer's manual in respect of transport, storage, charging,
recharging and disposal of the battery.

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2. DESCRIPTION
2.1 General
Multi-functional
The MultiPlus gets its name from the multiple functions it can perform. It is a powerful true
sine wave inverter, a sophisticated battery charger that features adaptive charge technology
and a high-speed AC transfer switch in a single enclosure. Beside these primary functions,
however, the MultiPlus has several advanced features that provide a range of new
applications as outlined below.
Uninterrupted AC power
In the event of a grid failure, or shore or generator power being disconnected, the inverter
within the MultiPlus is automatically activated and takes over supply to the connected loads.
This happens so fast (less than 20 milliseconds) that computers and other electronic
equipment will continue to operate without disruption.
Parallel and 3-phase operation capability
Up to 6 inverters can operate in parallel to achieve higher power output.
Operation in 3-phase configuration is also possible.
PowerControl – Dealing with limited generator or shore side power
With a Multi Control Panel a maximum generator or shore current can be set. The MultiPlus
will then take account of other AC loads and use whatever is extra for charging, thus
preventing the generator or shore supply from being overloaded.
PowerAssist – Boosting the capacity of shore or generator power
This feature takes the principle of PowerControl to a further dimension allowing the MultiPlus
Compact to supplement the capacity of the alternative source. Where peak power is so often
required only for a limited period, it is possible to reduce the size of generator needed or
conversely enable more to be achieved from the typically limited shore connection. When the
load reduces, the spare power is used to recharge the battery.
Remark 1: In case of parallel operation with a generator, power of the generator must not be
less than the capacity of the MultiPlus Compact (Example: a generator suitable for parallel
operation with a MultiPlus Compact 12/1600/70 must have a power of at least 1600VA).
Remark 2: The output voltage of a generator can be greatly disrupted. In that case, the "AC
waveform check" should be turned off.
Programmable relay
The MultiPlus is equipped with a 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.
2.2 Battery charger
Adaptive 4-stage charging characteristics: bulk – absorption – float – storage
The microprocessor-driven adaptive battery management system can be adjusted for various
types of batteries. The adaptive function automatically adapts the charging process to battery
use.

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EN NL FR DE ES Appendix
The right amount of charge: variable absorption time
In the event of slight battery discharge, absorption is kept short to prevent overcharging
and excessive gas formation. After deep discharging, the absorption time is automatically
extended in order to fully charge the battery.
Preventing damage due to excessive gassing: the BatterySafe mode
If, in order to quickly charge a battery, a high charge current in combination with a high
absorption voltage has been chosen, damage due to excessive gassing will be prevented
by automatically limiting the rate of voltage increase once the gassing voltage has been
reached.
Less maintenance and aging when the battery is not in use: the Storage mode
The Storage mode kicks in whenever the battery has not been subjected to discharge
during 24 hours. In the Storage mode float voltage is reduced to 2,2V/cell (13,2V for 12V
battery) to minimise gassing and corrosion of the positive plates. Once a week the voltage
is raised back to the absorption level to ‘equalize’ the battery. This feature prevents
stratification of the electrolyte and sulphation, a major cause of early battery failure.
Two DC outputs for charging two batteries
The main DC terminal can supply the full output current. The second output, intended for
charging a starter battery, is limited to 1A and has a slightly lower output voltage.
Increasing service life of the battery: temperature compensation
The temperature sensor (supplied with the product) serves to reduce charging voltage
when battery temperature rises. This is particularly important for maintenance-free
batteries, which could otherwise dry out by overcharging.
More on batteries and charging
Our book ‘Energy Unlimited’ offers further information on batteries and battery charging, and
is available free of charge on our website (see www.victronenergy.com Support &
Downloads’ General Technical Information). For more information on adaptive charging,
please also refer to the General Technical Information on our website.

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3. OPERATION
3.1 On / Off / Charger-only Switch
When switched to ‘on’, the product is fully functional. The inverter will come into operation and
the LED ‘inverter on’ will light up.
An AC voltage connected to the ‘AC in’ terminal will be switched through to the ‘AC out’
terminal, if within specifications. The inverter will switch off, the ‘Charger’ LED will light up and
the charger commences charging. If the voltage at the ‘AC-in’ terminal is not within
specifications, the inverter will switch on.
When the switch is switched to ‘charger only’, only the battery charger of the MultiPlus will
operate (if mains voltage is present). In this mode input also is switched through to the ‘AC
out’ terminal.
NOTE: When only the charger function is required, ensure that the switch is switched to
‘charger only’. This prevents the inverter from being switched on if the mains voltage is lost,
thus preventing the batteries from running flat.
3.2 Remote control
Remote control is possible with a 3 position switch or with a Multi Control panel.
The Multi Control panel has a simple rotary knob with which the maximum current of the AC
input can be set: see PowerControl in Section 2.
For the appropriate DIP switch settings, see sect. 5.5.1.

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EN NL FR DE ES Appendix
3.3 LED Indications
Inverter/Charger
On / Off / Charger-only switch = On
The inverter is switched on and supplies power to the load.
On / Off / Charger-only switch = On
The inverter is switched on and supplies power to the load.
Pre alarm: overload, or
battery voltage low, or
inverter temperature high.
On / Off / Charger-only switch = On
The inverter is switched off due to one of the following alarms:
overload, or
battery voltage low, or
inverter temperature high, or
DC ripple voltage too high.
On / Off / Charger-only switch = On
The AC input voltage is switched through and the charger operates in
float mode.
Charger only
On / Off / Charger-only switch = Charger only
The AC input voltage is switched through and the charger operates in
bulk or absorption mode.
On / Off / Charger-only switch = Charger only
The AC input is switched through and the charger operates in float or
storage mode.
Note: the MultiPlus will shut down if four abnormal events occur within 30 seconds.
The MultiPlus can be reset by switching to Off and then to On.
LED off
LED flashes
LED illuminated

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4. INSTALLATION
4.1 Location
The product must be installed in a dry and well-ventilated area, as close as possible to the
batteries. There should be a clear space of at least 10cm around the appliance for cooling.
For mounting see appendix F.
For safety purposes, this product should be installed in a heat-resistant
environment. Prevent the presence of e.g. chemicals, synthetic components,
curtains or other textiles, etc., in the immediate vicinity.
4.2 Connection of the Battery cables
In order to fully utilize the full capacity of the product, batteries with sufficient capacity and
battery cables with sufficient cross section should be used. See table:
48/800/9
24/800/16
12/800/35
Recommended cross
section (mm
2
)
1,5 5 m
10
16
25
Recommended battery
capacity (Ah)
20 – 100 40 – 200 100 – 400
Procedure
Proceed as follows to connect the battery cables:
Use an insulated box spanner in order to avoid shorting the battery.
Avoid shorting the battery cables.
Connect battery cables to the MultiPlus and battery, see appendix A.
Reverse polarity connection will cause damage to the product. (Safety fuse inside the
MultiPlus can be damaged)
This product should be installed by a qualified electrician.
a. Excessively high ambient temperature will result in the following:
- Reduced service life.
- Reduced charging current.
- Reduced peak capacity, or shutdown of the inverter.
b. Never mount the product directly above the batteries.

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EN NL FR DE ES Appendix
4.3 Connection of the AC cabling
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, 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, 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.
The mains input & output terminal connector can be found on the bottom of the MultiPlus,
see appendix A. The shore or mains cable must be connected to the connector with a
three-wire cable. Use a three-wire cable with a flexible core and a cross section of 2.5
mm².
Procedure (see appendix A)
Proceed as follows to connect the AC cables:
The AC output cable can be connected directly to the male-connector. (the connector pulls
out!)
The terminal points are indicated clearly. From left to right: ‘N’ (neutral), earth, and ‘L1’
(phase).
The AC input cable can be connected directly to the female-connector. (the connector pulls
out!)
The terminal points are indicated clearly. From left to right: ‘L1’ (phase), earth, and ‘N’
(neutral).
Push the ‘input’ connector into the AC-in connector.
Push the ‘output’ connector into the AC-out connector.
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.

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4.4 Optional Connections
A number of optional connections are possible:
Undo the four screws at the front of the enclosure and remove the front panel.
4.4.1 Second Battery
The MultiPlus has a connection (+) for charging a starter battery. For connection see
appendix A
4.4.2 Temperature Sensor
The temperature sensor supplied with the product may be used for temperature-compensated
charging. The sensor is insulated and must be mounted on the battery minus pole. Default
output voltages for Float and Absorption are at 25°C. In adjust mode temperature
compensation is disabled.
4.4.3 Remote Control
The product can be remotely controlled in two ways:
- With an external 3 position switch
- With a Multi Control Panel
Please see section 5.5.1. for appropriate DIP switch settings.
4.4.4. Programmable relay
The MultiPlus is equipped with a multi-functional relay that by default is programmed as an
alarm relay. The relay can be programmed for all kinds of other applications, for example to
start a generator (VEConfigure software needed).
4.4.5 Parallel Connection
The MultiPlus can be connected in parallel with several identical devices. To this end, a
connection is established between the devices by means of standard RJ45 UTP cables. The
system (one or more MultiPlus units plus optional control panel) will require subsequent
configuration (see Section 5).
In the event of connecting MultiPlus units in parallel, the following requirements must be met:
- A maximum of six units connected in parallel.
- Only identical devices may be connected in parallel.
- The DC connection cables to the devices must be of equal length and cross-section.
- If a positive and a negative DC distribution point is used, the cross-section of the connection between the
batteries and the DC distribution point must at least equal the sum of the required cross-sections of the
connections between the distribution point and the MultiPlus units.
- Place the MultiPlus units close to each other, but allow at least 10 cm for ventilation purposes under,
above and beside the units.
- UTP cables must be connected directly from one unit to the other (and to the remote panel).
Connection/splitter boxes are not permitted.
- A battery-temperature sensor need only be connected to one unit in the system. If the temperature of
several batteries is to be measured, you can also connect the sensors of other MultiPlus units in the system
(with a maximum of one sensor per MultiPlus). Temperature compensation during battery charging
responds to the sensor indicating the highest temperature.
- Voltage sensing must be connected to the master (see Section 5.5.1.4).
- If more than three units are connected in parallel in one system, a dongle is required (see Section 5).
- Only one remote control means (panel or switch) can be connected to the system.