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4.2
Electrical consumers in the replacement power operation
The technical requirements described in chapter 3.8 “Technical parameters of VARTA element backup”,
beginning on page 20, apply to the connection of electrical consumers to the replacement power network. In
addition to the general connection values, such as mains voltage, power and nominal current, the inrush current
is to be taken into account in the replacement power mode.
Please note: The starting or inrush current can reach multiple times the nominal current. This affects, for
example, transformers, switching power supplies or halogen lamps. In general, this value is not indicated on the
type plates and data sheets of the consumers. In general, this value is of subordinate importance for connecting
consumers to the integrated network, as the integrated network allows very high inrush currents.
For devices that are to be connected to the replacement power network of the VARTA element backup, the
inrush current is limited to 12 A. Here, the total of all connected consumers is to be taken into account.
•
Consumers with a short-term starting current < 12 A can be started.
•
If the starting current of the consumers is greater than 12 A and falling to permanently under 6 A, the
store will build up the replacement power network in that the internal regulator starts the store
dependent on the internal current and voltage limit.
•
Consumers in the replacement power path with a nominal power of < 1,300 W do not necessarily need
to start in replacement power mode, even if they can be operated in the integrated network mode.
4.2.1
Notes on connection:
•
Ensure that the loads are spread as equally as possible over the individual phases.
Example of possible loads
Please note that indicated values are a recommendation for individual devices. The data can deviate in
individual cases. The combination of various consumers must be tested individually at the end customer’s
premises as described in chapter 4.4 “Testing the replacement power function” on page 24. The loads are to be
spread as equally as possible over the individual phases.
Small household appliance:
up to 200 Watt.
Illuminant:
up to 500 Watt.
Cooling/freezing units:
up to 100 Watt.
Entertainment electronics:
up to 200 Watt.
Heating facilities:
up to 150 Watt.
Machine tools:
not recommended.
Motorised consumers:
not recommended.
4.2.2
Overload
If electrical consumers with too high a power or too high an inrush current are installed on the replacement
power network, the store cannot operate them. If the starting current of 12 A is not sufficient to switch on the
consumer, for example, in the event of too high a breakaway torque of a motor, the consumer cannot be
operated on the replacement power network.
•
If the mains voltage cannot be built up within 3 attempts, the store goes into a fault state. In this way,
the connected consumers are protected.
•
After a waiting time of 30 minutes in this fault state, the store switches itself off automatically.
•
In this waiting time, you have the chance to have the fault state shown to you. (See chapter 4.4: “Testing
the replacement power function” on page 24.)
Remedial measures:
•
Reduce the power of the connected consumers.
•
Redistribute the consumers across the 3 phases.
To recommission the VARTA element backup:
•
Switch the energy store off and on again.
•
Actuate the black start button.
