SMA Solar Technology AG
18. Disconnect the communication assembly from the
inverter. To do so, release and remove the ribbon
cable from the communication assembly.
Discharging residual voltages in the inverter
Prior to removing individual assemblies, all assemblies must always be discharged.
1.
Danger to life due to high voltages in the inverter
The capacitors in the inverter take 5 minutes to discharge.
• Wait 5 minutes before opening the upper enclosure lid.
2. Unscrew all screws from the upper enclosure lid (hex socket, AF 4).
3. Pull the upper enclosure lid forward to remove it.
4. Remove the DC protective cover. To do so, release all 4 screws from the DC protective cover
(hex socket, AF3) and remove it.
5. Discharge the H-AST assembly at the contact points using a 2-pole voltage detector without
intrinsic voltage source:
Replacement Manual
5 Disconnecting the Inverter from Voltage Sources
DANGER
STPTL-30-H-AST-RM-xx-10
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