The MultiPlus-II combines the functions of the MultiPlus and the MultiGrid. It has all the features of the MultiPlus, plus an external current transformer option to implement PowerControl and PowerAssist and to optimize self-consumption with external current sensing (max. 32A). It also has all the features of the MultiGrid with built-in anti-islanding and an increasingly long list of country approvals.
The MultiPlus-II will prevent overload of a limited AC source, such as a generator or shore power connection. First, battery charging will automatically be reduced when otherwise an overload would occur. The second level will boost the output of a generator or shore side supply with power taken from the battery. The MultiPlus-II is the key component in a Victron ESS system, providing the flexibility to combine with MPPT Solar Chargers or Grid-tie PV Inverters. For examples and more detailed information see the ESS (Energy Storage System) manual. In the event of a grid failure, or when shore or generator power is disconnected, the inverter within the Multi is automatically activated and takes over the 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. Monitor and control your Multi and system or systems’ locally (LAN) or remotely via the internet from anywhere in the world, using the free VRM app and free VRM portal website. Access can be from a phone, tablet, laptop or PC for multiple operating systems. There is no end to the level of control, via the required Color Control GX or Venus GX, from adjusting your Multi to auto starting a back generator and more…
Note: for a short period of time this product was called MultiGrid-II.
A MultiPlus, plus ESS (Energy Storage System) functionality- The MultiPlus-II is a multifunctional inverter/charger with all the features of the MultiPlus, plus an external current sensor option which extends the PowerControl and PowerAssist function to 50A resp. 100A. The MultiPlus-II is ideally suited for professional marine, yachting, vehicle and land based off-grid applications. It also has built-in anti-islanding functionality, and an increasingly long list of country approvals for ESS application. Several system configurations are possible. For more detailed information see the ESS Design and configuration manual.
PowerControl and PowerAssist – Boosting the capacity of the grid or a generator- A maximum grid or generator current can be set. The MultiPlus-II will then take account of other AC loads and use whatever is extra for battery charging, thus preventing the generator or grid from being overloaded (PowerControl function). PowerAssist takes the principle of PowerControl to a further dimension. Where peak power is so often required only for a limited period, the MultiPlus-II will compensate insufficient generator, shore or grid power with power from the battery. When the load reduces, the spare power is used to recharge the battery.
Solar energy: AC power available even during a grid failure- The MultiPlus-II can be used in off grid as well as grid connected PV and other alternative energy systems. It is compatible with both solar charger controllers and grid-tie inverters.
Two AC Outputs- The main output has no break functionality. The MultiPlus-II takes over the supply to the connected loads in the event of a grid failure or when shore/generator power is disconnected. This happens so fast (less than 20 milliseconds) that computers and other electronic equipment will continue to operate without disruption. The second output is live only when AC is available on the input of the MultiPlus-II. Loads that should not discharge the battery, like a water heater for example, can be connected to this output.
Virtually unlimited power thanks to parallel and three phase operation- Up to 6 Multis can operate in parallel to achieve higher power output. Six 48/5000/70 units, for example, will provide 25 kW / 30 kVA output power with 420 Amps charging capacity. In addition to parallel connection, three units of the same model can be configured for three phase output. But that’s not all: up to 6 sets of three units can be parallel connected for a 75 kW / 90 kVA inverter and more than 1200 Amps charging capacity.
On-site system configuring, monitoring and control- Settings can be changed in a matter of minutes with VEConfigure software (computer or laptop and MK3-USB interface needed). Several monitoring and control options are available: Color Control GX, Venus GX, Octo GX, CANvu GX, laptop, computer, Bluetooth (with the optional VE.Bus Smart dongle), Battery Monitor, Digital Multi Control Panel.
Remote configuring and monitoring- Install a Color Control GX, Cerbo GX or other GX product to connect to the internet. Operational data can be stored and displayed on our VRM (Victron Remote Management) website, free of charge. When connected to the internet, systems can be accessed remotely, and settings can be changed.
PowerControl & PowerAssist Yes
Transfer switch 32 A
Maximum AC input current 32 A
DC Input voltage range 9.5 – 17 V
Output Output voltage: 230 VAC ± 2% Frequency: 50 Hz ± 0,1% (1)
Cont. output power at 25°C 3000 VA
Cont. output power at 25°C 2400 W
Cont. output power at 40°C 2200 W
Cont. output power at 65°C 1700 W
Maximum apparent feed-in power 300VA
Peak power 5500 W
Maximum efficiency 93 %
Zero load power 13 W
Zero load power in AES mode 9 W
Zero load power in Search mode 3 W
AC Input Input voltage range: 187-265 VAC Input frequency: 45 – 65 Hz
Charge voltage ‘absorption’ 14,4 V
Charge voltage ‘float’ 13,8 V
Storage mode 13,2 V
Maximum battery charge current (4) 120 A
Battery temperature and voltage sensor Yes
Auxiliary output Yes (32 A)
External AC current sensor (optional) 50 A
Programmable relay (5) Yes
Protection (2) a – g
VE.Bus communication port
For parallel and three phase operation,
remote monitoring and system integration
General purpose com. port Yes, 2x
Remote on-off Yes
Operating temperature range -40 to +65°C (fan assisted cooling)
Humidity (non-condensing) max 95%
Material & Colour steel, blue RAL 5012
Protection category IP22
Battery-connection M8 bolts
230 V AC-connection Screw terminals 13 mm² (6 AWG)
Weight 19 kg
Dimensions (hxwxd) 546 x 275 x 147 mm
Safety EN-IEC 60335-1, EN-IEC 60335-2-29, EN-IEC 62109-1, EN-IEC 62109-2 Emission, Immunity
Uninterruptible power supply IEC 62040-1, AS 620401.1
Anti-islanding VDE-AR-N 4105, TOR-D4, AS/NZS 4777.2, NRS 097-2-1, UTE C15-712-1, C10/11, RD 1699-RD 413, G59/3-2, G83/2
1)Can be adjusted to60Hz3) Non-linear load, crest factor 3:1
4) At 25°Cambient
5) Programmable relay which can be set for general
b)overload alarm, DC under voltage or genset start/stop
c)battery voltage too high function. AC rating: 230V / 4A, DC rating: 4A up to
d)battery voltage too low 35VDC and 1A up to60VDC
e)temperature too high
f)230 VAC on inverter output
g)input voltage ripple too high