Mass Combi Pro 12/3000-150, 24/3500-100
– User and Installation Manual
9
Figure 3-4: AC power from Generator input
Figure 3-5: AC power from Mains input
3.4.3
Output 1 and 2
See figure 3-6. The Mass Combi ultra has two AC-outputs.
AC-power is always available on output 1 and this is the
ideal output for loads that need continuous AC-power.
Output 2 is only available when external AC power comes
available on the Mains- and/or Gen input. Output 2 policy is
configurable by the dipswitches locally on the Mass Combi
Ultra or a MasterBus monitoring device. (See chapter
4.3.2).
Figure 3-6: Out-1 and Out-2
3.4.4
Power sharing mode
See figure 3-7. If the available power at the AC-input is
limited, and the load connected to the AC output increases,
the external AC circuit breaker may trip if nothing is done.
To avoid this, the Mass Combi Ultra can automatically
reduce the battery charger output, and thus the AC power
consumption. This Power sharing feature constantly
senses the incoming AC current which is used to supply
both the battery charger and the appliances connected to
the AC outputs.
The Power Sharing level should be set to match the value
of the external circuit breaker, which protects the incoming
AC power. For example, when the external AC power is
limited by a 6 A fuse, the Power Sharing level must be set
to 6 A. When the total connected AC load reaches the
level of the Power Sharing setting (6 A), there will be no
power left over to charge the battery. This means that the
charge current of the Mass Combi will be reduced to 0 A.
The Power Sharing level can be adjusted by means of the
DIP-switches locally on the Mass Combi Ultra. However,
we recommend the use optional remote control, like the
MasterView Easy.
