45
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
7 Installation
7.
Installation
► Read the chapter “1. Planning the installa-
tion”, page 1 and this chapter through
completely before starting work on the instal-
lation.
7.1 Safety information
DANGER
Electric shock
During operation there is a potentially lethal volt-
age present inside the inverter. Even after the
inverter has been disconnected from all power
sources, this voltage is present in the inverter for
up to a further 80 seconds.
Therefore always perform the following work
steps before working on the inverter
1.
Turn the DC disconnector to the
OFF
posi-
tion.
2.
Disconnect the inverter from all AC and DC
sources and make sure that none of the con-
nections can be inadvertently re-established.
3.
Wait at least 80 seconds to allow the internal
capacitors to discharge.
DANGER
Electric shock
There is a potentially lethal voltage present
on the DC terminals of the inverter. The solar
modules start to produce current as soon as light
falls on them. This occurs even if the light is not
shining directly on the solar modules.
► Never disconnect the inverter from the solar
modules when it is under load.
► Turn the DC disconnector to the
OFF
posi-
tion.
► Disconnect the connection to the grid so that
the inverter cannot supply any energy to it.
► Disconnect the inverter from all AC and DC
sources. Make sure that none of the connec-
tions can be inadvertently re-established.
► Protect the DC cables from being inadvert-
ently touched.
WARNING
Heavy weight
The inverter is very heavy.
► The inverter must be lifted and carried by at
least 2 people or with suitable lifting gear.
NOTE
Water ingress.
► All sealing caps that were removed during the
installation should be kept for future use (e.g.
transport or storage).
► Never open the inverter housing! Otherwise
the guarantee will be void.
7.2 Sequence of installation steps
The connections for RS485, the dry contacts and
the external power off (EPO) are all located on
the communications card. These installation tasks
can therefore be combined.
Recommended sequence of installation steps:
1. Installing the inverter
2. Grounding the inverter housing
3. Connecting the communications card
1)
4. Connecting the dry contacts and the external power off
(optional)
5. Connecting the grid (AC)
6. Connecting the solar modules (DC)