Bedienungsanleitung Vetus COMBI3012 (Seite 57 von 80) (Englisch)

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Battery charger / inverter COMBI-GAMMA

090138.02 57

B2-09=1

The effective AC input current limit depends on the load history. When the load is •

lower than the AC IN Current Limit (B2-05), the effective AC input current limit is

also lower but slightly above the load.

When the load increase, the effective current limit also increases with a delay. The •

thought behind this is that when a generator is running at a low load, it can’t switch

to full load immediately and it needs some time to increase the power.

An example:*

We have a 2KVA generator.•

We adjust the AC IN Current Limit (B2-05) setting to 8A and we enable Load Support

(C1-05=1). We have no load connected and the batteries are fully charged. Therefore,

no current from the generator is drawn.

At this moment, we connect a load of 7A to the Combi-Gamma with this setting (B2-09) •

disabled, the Combi-Gamma would not react because the load is below the AC IN Cur-

rent Limit (B2-05) setting. The result is that the full load is connected to the generator

which will drop in voltage because it can’t deliver that current instantly which could re-

sult in switching to the INVERTER.

If however we had this setting (Dynamic Current Limit) enabled, the effective AC input •

current limit would be far lower than 8A because the load was zero. So connecting a

load of 7A will result in Combi-Gamma starting to Load Support and no voltage drop is

being examined on the AC OUT. The generator starts to supply the load and the effective

AC input current limit will increase to 8A slowly. At the moment, the Combi-Gamma will

stop Load Support and the full load is on the generator.

This is a powerful option in combination with Load Support but also without Load Sup-•

port, it can prevent unnecessary switching to the INVERTER because the charge cur-

rent will reduce when the AC input current becomes higher than the effective AC input

current limit.

B2-10: MODE4: Bat Lo?V ATS ON

B2-11: MODE4: Bat Lo?S ATS ON

B2-12: MODE4: Bat Hi?V ATSOFF

B2-13: MODE4: Bat Hi?S ATSOFF

B2-14: MODE3: Bat Lo?V ATS ON

B2-15: MODE3: Bat Lo?S ATS ON

B2-16: MODE3: Bat Hi?V ATSOFF

B2-17: MODE3: Bat Lo?S ATSOFF

B2-10~B2-13 are used to set the condition of ATS to be ON/OFF in MODE4•

B2-14~B2-17 are used to set the condition of ATS to be ON/OFF in MODE3•

When Combi-Gamma is in either MODE4 or MODE3, the INVERTER mode takes prior-•

ity to supply voltage to the AC OUT for load consumption. When AC IN power is ready,

the INVERTER is active and the battery is about to be exhausted, ATS will be switched

on to ensure the AC OUT will continuously supply the load. At the moment, AC OUT will

be supplied by the AC IN power. At the same time, the battery can be charged by other

renewable energy such as a solar charger, wind charger or a DC generator charger

(MODE3) which is normally the solar house application in no need of an AC CHARGER.

The battery can be charged by AC IN (AC CHARGER) or other renewable energy such

as a solar charger, wind charger or DC generator charger (MODE4) which is normally

the application requesting both AC charging and DC charging.

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