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Connecting backup power - Full Backup
General The examples given in this document (in particular cabling variants and Circuit Dia-
grams) are suggestions only. These examples have been carefully developed and
tested. They can therefore be used as a basis for real-life installation. Anyone following
or using these examples does so at their own risk.
IMPORTANT!
The applicable national laws, standards and regulations as well as the specifications of
the respective grid operator must be taken into account and applied.
It is strongly recommended to coordinate the concrete examples implemented and in
particular the specific installation with the grid operator to obtain their explicit approval.
This obligation applies to system constructors in particular (e.g. installers).
The examples suggested here show a backup power supply with or without an external
protection relay (external grid and system protection unit). Whether an external protec-
tion relay must be used or not is the decision of the respective grid operator.
IMPORTANT!
No uninterruptible power supply (UPS) must be operated in the backup power circuit.
The Installation and Operating Instructions must be read carefully prior to use. If anything
is unclear, contact your vendor immediately.
WARNING!
Any incorrect installation, commissioning, operation or usage can cause serious
personal injury and/or property damage.
Only trained and qualified personnel are authorised to install and commission the sys-
tem, and only within the scope of the technical regulations.
Cabling variants
including backup
power circuits
with 3-pin separa-
tion e.g. Austria
or Australia Circuit Diagram
The Circuit Diagram can be found in the appendix to this document on page XX .
Cabling of backup power circuit and non-backup power circuits
If not all the loads in the home need to be supplied in a backup power situation, the cir-
cuits need to be divided into backup power circuits and non-backup power circuits. The
total load of the backup power circuits must not exceed the nominal output of the
inverter.
The backup power circuits and non-backup power circuits must be fused separately
according to the required safety measures (residual-current circuit breaker, automatic cir-
cuit breaker, etc.).
In backup power mode, only the backup power circuits are disconnected from the grid by
contactors K1 and K2, 3-pin. The rest of the home network is not supplied with power in
this case.
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