SMA SB 1300TL - Manual (Page 46)

10 Disconnecting the Inverter from Voltage Sources
Prior to performing any work on the inverter, always disconnect it from all voltage sources as
described in this section. Always adhere to the prescribed sequence.
Procedure:
1. Disconnect the circuit breaker and secure it against reconnection.
2. If an external DC load-break switch is installed, disconnect it from all voltage sources.
3. If an ESS is installed, carefully remove the ESS.
4. If the fault indicator relay is used, switch off the load supply voltage, if necessary.
5. Wait until the LEDs and the display have gone out.
6. Use a current clamp to ensure that no current is present in the DC cables.
7. Release and remove all DC connectors. 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 straight out. Do not
pull on the cable.
8. Ensure that no voltage is present at the DC
inputs on the inverter.
9. Pull the AC connection socket out of the AC pin
connector on the inverter. Turn the bush insert of
the AC connection socket to the left until the AC
connection socket releases.
10.
Danger to life due to high voltages
The capacitors in the inverter take ten minutes to discharge.
• Wait ten minutes before opening the inverter.
10 Disconnecting the Inverter from Voltage Sources SMA Solar Technology AG
Operating Manual SB13-21TL-BE-en-11 46