SMA 9000TL - Page 13

5 Disconnecting the Inverter from Voltage Sources
SMA Solar Technology AG
Replacement Manual CON-SMC9-11-RM-xx-10 13
7. Wait 10 minutes before opening the enclosure lid.
8. Loosen all screws of the enclosure lid and remove the enclosure lid.
9. Ensure that no voltage is present between L and N at the AC terminal using a suitable
measuring device.
10. Ensure that no voltage is present between L and PE at the AC terminal using a suitable
measuring device.
11. Actively discharge the DC link. For this purpose use,
for example, a 2-pole voltage detector that does not
have its own voltage source. Using the voltage
detector, conduct a measurement on the connection
screws of the terminal of the DC link connection
cable until a value of 0V is displayed.
12. Actively discharge the charging circuit of the
contactor on the left. For this purpose use, for
example, a 2-pole voltage detector that does not
have its own voltage source. Using the voltage
detector, conduct a measurement on the connection
screw of the terminal with the black connection
cable (1) and on the metal tongue of the contactor
on the left (2) until a value of 0V is displayed.
1
2
13. Actively discharge the charging circuit of the
contactor on the right. For this purpose use, for
example, a 2-pole voltage detector that does not
have its own voltage source. Using the voltage
detector, conduct a measurement on the connection
screw of the terminal block with the red connection
cable (1) and on the metal tongue of the contactor
on the right (2) until a value of 0V is displayed.
1
2
14.
NOTICE
Damage to the inverter due to electrostatic discharge
The internal components of the inverter can be irreparably damaged by electrostatic
discharge.
• Ground yourself before touching any component.
ENGLISH