5. Configuration
This section is intended mainly for stand-alone applications.
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.
Possibly, the standard battery charging voltage is not suitable for your batteries! Refer to the manufacturer's
documentation, or to your battery supplier!
MultiPlus-II 48V 3kVA 120V factory settings
Inverter frequency 60 Hz
Input frequency range 45 – 65 Hz
Input voltage range 90 - 140 VAC
Inverter voltage 120 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 57.6 V
Absorption time up to 8 hours (depending on bulk time)
Float voltage 55.2 V
Storage voltage 52.8 (not adjustable)
Repeated absorption time 1 hour
Absorption repeat interval 7 days
Bulk protection on
AC input current limit 50A (= 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
MultiPlus-II 48V 3kVA 120V
Page 15 Configuration
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