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Multi RS Solar
3. General Description
The Multi RS Solar is a combined inverter/charger and MPPT solar charger.
It is designed to operate with a 48V battery bank and produces a pure AC sine wave at 230V.
3.1. 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-only operation. Example: an electric boiler that is allowed to operate only if the AC input is available. There are
several applications for AC-out-2.
3.2. PowerControl - maximum use of limited AC power
The product can supply a huge charging current. This implies heavy loading of the AC input. Therefore a maximum current can
be set. The product then takes other power users into account, and only uses 'surplus' current for charging purposes.
3.3. PowerAssist - extended use of AC input current
This feature takes the principle of PowerControl to a further dimension allowing the product to supplement the capacity of the
alternative source. Where peak power is often required only for a limited period, the product will make sure that insufficient AC
input power is immediately compensated for by power from the battery. When the load reduces, the spare power is used to
recharge the battery.
The Multi RS can provide throughput of up to 50 A to the loads. The AC input relays are limited to 50 A (Multi RS - 2 tracker), and
the inverter can contribute up to 25 A continuous at best conditions (when it gets hotter this figure will be reduced).
This power comes from either the battery and/or the DC PV (the DC PV power also has to go through the inverter before it
reaches the AC loads).
3.4. Programmable
All programmable settings and grid-interactive setpoints for this product can be changed with either a mobile phone or computer
(Windows requires VE.Direct to USB dongle), using the free VictronConnect software available on the App Store of your device,
or www.victronenergy.com.
3.5. Programmable relay
The product is equipped with a programmable relay. The relay can be programmed for different applications, for example as a
starter relay.
3.6. Programmable analog/digital input/output ports
The product is equipped with 2 analog/digital input/output ports.
These ports can be used for several purposes. One application is communication with the allow-to-charge and allow-to-discharge
BMS controls of a lithium-ion battery.
See appendix.
3.7. Built-in Battery Monitor
The ideal solution when the product is part of a hybrid system (AC input, inverter/chargers, storage battery, and alternative
energy). The built-in battery monitor can be set to open and close the relay:
• start at a preset % discharge level
• start (with a preset delay) at a preset battery voltage
• start (with a preset delay) at a preset load level
• stop at a preset battery voltage
• stop (with a preset delay) after the bulk charge phase has been completed
• stop (with a preset delay) at a preset load level
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General Description
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