9 Installing accessories
Safety Instructions
Installation and Operation Manual M125HV EU V3 EN 2021-07-12
84
9.
Installing accessories
9.1
Safety Instructions
DANGER
Electric shock
Potentially fatal voltages are present in the
inverter during operation. When the inverter
is disconnected from all power sources, this
voltage remains in the inverter for up to 135
seconds.
You should therefore always carry out the fol-
lowing steps before working on the inverter:
1. Turn both DC isolating switches to the
OFF
position.
2. Disconnect the inverter from all AC and DC
voltage sources and make sure that none
of the connections can be restored acciden-
tally.
3. Wait at least 135 seconds for the internal
capacitors to discharge.
DANGER
Electric shock
Potentially fatal voltages are present at the DC
connections of the inverter. When light falls on
the solar modules, they immediately start to
generate electricity. This also happens when
light does not fall directly on the solar modules.
►
Never disconnect the inverter from the solar
modules when it is under load.
►
Turn both DC isolating switches to the
OFF
position.
►
Disconnect the connection to the grid so that
the inverter cannot feed energy into the grid.
►
Disconnect the inverter from all AC and DC
voltage sources. Make sure that none of the
connections can be restored accidentally.
►
Ensure that the DC cables cannot be
touched accidentally.
WARNING
Electric shock
If the doors of the inverter are open, the IP65
degree of protection is no longer guaranteed.
►
Only open the doors when absolutely
necessary.
►
Do not open the doors if water or dirt might
enter the inverter.
►
After work is completed, ensure that the
doors are properly shut and screwed in
again. Check that the doors are properly
sealed.
WARNING
Heavy weight
The inverter is very heavy.
►
The inverter must be lifted and carried by at
least three people or using appropriate lifting
gear example, a hoist or crane).
Before installing accessories, always start work
with”9.2 Making preparations for work - discon-
necting the inverter from the mains (AC) and
solar modules (DC)”, page 85!
After installing the accessories, always complete
the work with”9.5 Finishing the work - connecting
the inverter to the grid (AC) and solar modules
(DC)”, page 99.
During the initial installation of the inverter, install
all accessories
before
connecting the inverter to
the mains (AC) or the solar modules (DC).
