MultiPlus 230V 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. 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 an inverter/charger and batteries, this problem can be solved: the inverter/charger can replace the grid during a power failure . When sustainable energy sources produce more power than needed, the inverter/charger will use the surplus to charge the batteries; in the event of a shortfall, the inverter/charger will supply additional power from the battery. Programmable All settings can be changed with a PC and free-of-charge software, downloadable from our website www.victronenergy.com 2.3. Battery charger 2.3.1. Lead-acid batteries Adaptive 4-stage charge algorithm:
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. 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. Battery voltage sense: the correct charge voltage Voltage loss due to cable resistance can be compensated by using the voltage sense facility to measure voltage directly on the DC bus or on the battery terminals. Battery voltage and temperature compensation The temperature sensor serves to reduce charging voltage when battery temperature rises. This is particularly important for maintenance-free batteries, which could otherwise dry out by overcharging.
The temperature sensor is not supplied with 48V models. It can be ordered separately. Order number: ASS000001000 2.3.2. Victron Lithium Battery Smart If Victron Lithium Smart batteries are used, use the VE.Bus BMS V2 or the Lynx Smart BMS . 2.3.3. Other lithium batteries If other lithium batteries are used, follow this link for a list of compatible battery types and how to install and configure them: https://www.victronenergy.com/live/battery_compatibility:start . Page 4 Description