SMA SUNNY TRIPOWER CORE1 - Page 80

9 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Operating manualSTP50-40-BE-en-1580
8. Release and remove the DC connectors. To do so,
insert a flat-blade screwdriver or an angled
screwdriver (blade width: 3.5mm) into one of the
side slots and pull the DC connectors out. When
doing so, do not lever the DC connectors out, but
insert the tool into one of the side slots only to
release the locking mechanism, and do not pull on
the cable.
1
2
9. Ensure that the DC connectors on the product and those that are equipped with DC
conductors are in perfect condition and that none of the DC conductors or DC plug contacts
are exposed.
10. Ensure that no voltage is present at the DC inputs on
the inverter using a suitable measuring device.
A
B
C
<30V
11. Unscrew (TX25) all ten screws of the enclosure lid of
the AC-ConnectionUnit and remove the enclosure
lid carefully towards the front.
10x
12. Set the screws and the enclosure lid aside and store safely.
13. Ensure there is no voltage on the AC terminal block
between L1 and N, L2 and N, and L3 and N using
a suitable measuring device. To do so, insert the test
probe (maximum diameter: 2.5mm) into the
measuring points of the respective terminal blocks.
L1
L2
L3
N
0.00
0.00
14. Ensure there is no voltage on the AC terminal block
between L1 and PE, L2 and PE, and L3 and PE using
a suitable measuring device. To do so, insert the test
probe (maximum diameter: 2.5mm) into the
measuring points of the respective terminal blocks.
L1
L2
L3
N
0.00
0.00