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8 A AC

8 A AC

0 A AC

6 A AC

213 A DC

3,5 kW

1

2

5

9

3

7

6

4

8

15 A AC

7 A AC

16 A AC

63 A DC

5,1 kW

0 A AC

1

2

10

9

3

7

8

2

5

9

10

3

1

7

6

4

8

What is the

Power Assist

function?

Mastervolt Mass Combis are

equipped with an extremely

advanced system to prevent the

AC power fuse from becoming

overloaded. The output current

of the battery charger is reduced

as soon as there is a risk of this

happening. If this proves insufficient,

the system rapidly switches to

inverter operation so that the

battery temporarily powers a part

of the connected load. Since the

inverter will already have been

synchronised and the switching is

so fast, computers will continue

functioning, as will clocks and

timers on, for instance, microwave

ovens. Once the load decreases,

the system switches back to power

and the battery charger returns to

charging the batteries. Your Combi

can therefore also function as an

efficient emergency power system.

TECHNICAL BACKGROUND

The electrical system is connected to the grid. The circuit breaker is limited to 6 amps.

Several 230 V appliances are switched on, consuming 3.5 kW. A total of 16 amps is

required. The additional 230 V (10 A) is supplied via the service battery and the Mass

Combi. Automatic switching off prevents excessive discharge of the batteries. You

can program the setting via Power Sharing in the Mass Combi, or remotely using the

EasyView 5 panel.

In this case your power sources are a generator and the grid connection. Both sources

can charge the batteries and provide power to the connected consumers. The Mass

Combi Ultra regulates supply and demand and can optionally even start the generator

through MasterBus. In case of large power demand, the Mass Combi Ultra provides

additional AC power from the Lithium Ion battery, in parallel with either the generator

or the grid connection. This way you can operate larger loads without overloading the

generator or blowing the main fuse.

Example 1 - Mass Combi

Higher consumption than available from the grid.

Example 2 - Mass Combi Ultra

No grid - only generator and battery power.

Mass Combi (Ultra) inverter/

charger combination.

EasyView 5, control panel for

all devices in a MasterBus

network.

Generator.

Masterswitch transfer system.

Service battery, gel.

MasterShunt.

Starter battery, AGM.

Inverter output.

High Power output.

Lithium Ion battery.

230