1. Introduction
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Note:
Useful additional information or "Tips and Tricks" on specific subjects.
Read this before installing, operating or maintaining the inverter.
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Safety information important for human safety. Violation of warnings may result in
injury to persons or death.
Information important for the protection of property. Violation of this type of infor-
mation may cause damage and loss of property.
Before installation:
Check for damage to inverter and packaging. If you are in doubt, please contact
your supplier before installing the inverter. Check the voltages of the solar modules
and make sure they are within the limits of the Danfoss inverter specifications before
connecting them to the inverter (see section "Connection of Strings").
Installation:
Only trained and authorised personnel familiar with local electrical codes may install
the inverter. For optimum safety, please follow the steps described in this manual.
Keep in mind that the inverter has two voltage carrying sides, the PV input and the
AC grid.
Disconnecting the inverter:
Always disconnect the AC line first! Afterwards disconnect the PV lines. Note that
the inverter can still be charged with very high voltages at hazardous levels even
when it is disconnected from grid/mains and solar modules. Wait at least 15 min.
before proceeding, after having disconnected from grid and PV panels.
Operating the inverter:
Before connecting the AC grid to the inverter, make sure that the installation cover
is mounted again. The inverter must not be open during operation.
Maintenance and modification:
Only authorised personnel are allowed to repair or modify the inverter. To ensure
optimum safety for user and environment, only the original spare parts available
from your supplier should be used.
Functional safety parameters:
Unauthorised changes of functional safety parameters may cause injury or accidents
to people or inverter. Additionally it will lead to the cancelling of all inverter operating
approval certificates. The Danfoss inverters in the ULX range are all designed ac-
cording to the German VDE0126-1-1 (February 2006) standard.
If non-original spare parts are used, the compliance with CE guidelines in respect of
electrical safety, EMC and machine safety is not guaranteed.
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