SMA Solar Technology AG
10 Disconnecting the Inverter from Voltage Sources
Installation Manual
STP5-9TL-IA-en-10
67
9. Ensure that no voltage is present between
L1
and
N
,
L2
and
N,
as well as between
L3
and
N
on the
AC connecting terminal plate one after another
using a suitable measuring device. Insert a test
probe in each round opening of the terminal.
10. Ensure that no voltage is present between
L1
and
PE
,
L2
and
PE
, as well as between
L3
and
PE
on
the AC terminal one after another by using a
suitable measuring device. Insert a test probe in
each round opening of the terminal.
11. Ensure that no voltage is present between all
terminals of the multi-function relay and
PE
.
12.
Damage to the inverter due to electrostatic discharge
The internal components of the inverter can be irreparably damaged by electrostatic discharge.
• Earth yourself before touching any components.