Victron energy MultiPlus-II GX Manual page 19

Input frequency range
Input frequency range accepted. The product 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. The product 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 180V 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 regula-
ted, synchronous AC generator' (synchronous AVR generator). Most generators rated at 10kVA 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 230V.
The solution is to increase the lower limit setting to 210VAC (the output of AVR generators is generally very stable), or to discon-
nect the product from the generator when a generator stop signal is given (with help of an AC contactor installed in series with the
generator).
Inverter voltage
Output voltage in battery operation.
Adjustability: 210 – 245 V
Stand-alone / parallel operation / 2-3 phase setting
Using multiple devices, it is possible to:
• increase total inverter power (several devices in parallel)
• create a split-phase system with a separate autotransformer: see VE autotransformer datasheet and manual
• create a 3-phase system.
The standard product settings are for a single device in stand alone operation.
AES (Automatic Economy Switch)
If this setting is turned 'on', the power consumption in no-load operation and with low loads is decreased by approx. 20%, by
slightly 'narrowing' the sinusoidal voltage. Applicable in stand-alone configuration only.
Search Mode
Instead of the AES mode, the search mode can also be chosen. If search mode is 'on', the power consumption in no-load opera-
tion is decreased by approx. 70%. In this mode the product, when operating in inverter mode, is switched off in case of no load or
very low load, and switches on every two seconds for a short period. If the output current exceeds a set level, the inverter will
continue to operate. If not, the inverter will shut down again.
The Search Mode 'shut down' and 'remain on' load levels can be set with VEConfigure.
The default settings are:
Action Threshold
Shut down 40 Watt (linear load)
Turn on 100 Watt (linear load)
Ground relay (see appendix B)
With this relay, the neutral conductor of the AC output is grounded to the chassis when the back feed safety relays are open. This
ensures the correct operation of earth leakage circuit breakers in the output. If required an external ground relay can be connec-
ted (for a split-phase system with a separate autotransformer). See appendix A.
Battery charge algorithm
The standard setting is 'Four-stage adaptive with BatterySafe mode'.
MultiPlus-II GX
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