SC Series User Manual

4-2. Operation mode introduction

The SC series is not just a combination of an inverter and a battery charger. There are many additional

features which can be used to increase the total available AC power, even when external AC power is

limited.

4-2-1. Basic operation description

When there is no external “AC input” power available, the inverter of the unit provides AC power output

load from the batteries. See Fig. 12.

Fig. 12

：

Inverter mode

When external AC power comes available, the transfer relay switches on. See Fig.13. Both outputs as

well as the battery charger are supplied by the external AC power. The batteries are recharged now.

Fig. 13

：

Charger mode

4-2-2. Power sharing function

Here the Power Sharing level is set to a 30 Amps while the AC output loads consume a total of 20Amps.

This means that only 30 – 20 = 10 Amps is left over for charging. With 12V batteries 120 VAC this will

result in a maximum charge current of approx. 100A DC. See Fig. 14.