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Victron MultiPlus II 48 3000 35-32 Manual

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5. CONFIGURATION
This section is intended mainly for stand-alone applications
For grid connected Energy Storage Systems (ESS) please see https://www.victronenergy.com/live/ess:start
• Settings may only be changed by a qualified electrical engineer.
• Read the instructions thoroughly before implementing changes.
• During setting of the charger, the AC input must be removed.
5.1 Standard settings: ready for use
On delivery, the MultiPlus-II is set to standard factory values. In general, these settings are suitable for single-unit operation.
Warning: Possibly, the standard battery charging voltage is not suitable for your batteries! Refer to the manufacturer's
documentation, or to your battery supplier!
Standard MultiPlus-II factory settings
Inverter frequency 50 Hz
Input frequency range 45 – 65 Hz
Input voltage range 180 – 265 VAC
Inverter voltage 230 VAC
Stand-alone / parallel / 3-phase stand-alone
AES (Automatic Economy Switch) off
Ground relay on
Charger on/ off on
Battery charge curve four-stage adaptive with BatterySafe mode
Charging current 100% of the maximum charging current
Battery type Victron Gel Deep Discharge (also suitable for Victron AGM Deep Discharge)
Automatic equalisation charging off
Absorption voltage 28.8 V / 57.6 V
Absorption time up to 8 hours (depending on bulk time)
Float voltage 27.6 V / 55.2 V
Storage voltage 26.4 V / 52.8 V (not adjustable)
Repeated absorption time 1 hour
Absorption repeat interval 7 days
Bulk protection on
AC input current limit 32 A for 3kVA and 50 A for 8kVA and 10kVA (= adjustable current limit for
PowerControl and PowerAssist functions)
UPS feature on
Dynamic current limiter off
WeakAC off
BoostFactor 2
Programmable relay alarm function
PowerAssist on
5.2 Explanation of settings
Settings that are not self-explanatory are described briefly below. For further information, please refer to the help files in the software
configuration programs (see Section 5.3).
Inverter frequency
Output frequency if no AC is present at the input.
Adjustability: 50 Hz; 60 Hz
Input frequency range
Input frequency range accepted by the MultiPlus-II. The MultiPlus-II synchronises within this range with the AC input frequency. The
output frequency is then equal to the input frequency.
Adjustability: 45 – 65 Hz; 45 – 55 Hz; 55 – 65 Hz
Input voltage range
Voltage range accepted by the MultiPlus-II. The MultiPlus-II synchronises within this range with the AC input. The output voltage is then
equal to the input voltage.
Adjustability: Lower limit: 180 – 230 V
Upper limit: 230 – 270 V
Note: the standard lower limit setting of 180 V is intended for connection to a weak mains supply, or to a generator with unstable AC
output. This setting may result in a system shut down when connected to a ‘brushless, self excited, externally voltage regulated,
synchronous AC generator’ (synchronous AVR generator). Most generators rated at 10 kVA or more are synchronous AVR generators.
The shut down is initiated when the generator is stopped and revs down while the AVR simultaneously ‘tries’ to keep the output voltage
of the generator at 230 V.
The solution is to increase the lower limit setting to 210 VAC (the output of AVR generators is generally very stable), or to disconnect
the MultiPlus-II from the generator when a generator stop signal is given (with help of an AC contactor installed in series with the
generator).
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