10.3.4 Repairs every 10 Years
Inverter
Task Comment
Replace 24V power supply units • Contact the Service.
Replace the fans of the AC disconnection unit • Contact the Service.
Replace exterior key switch, front element and label • Contact the Service.
Low-Voltage Meter
Task See
For order option "Country package Italy": replace the
battery of the meter E650 from Landis+Gyr and check
the function of the meter.
Documentation for the low-voltage meter
10.3.5 Repairs every 13 Years
Replacement intervals for order option "QatNight"
The replacement intervals are halved for order option "QatNight".
Task Comment
Replace interior fan in the inverter cabinet • Contact Service partner.
Replace inverter bridge fan • Contact Service partner.
10.4 General Maintenance Work
10.4.1 Performing the Visual Inspection
Danger to life due to electric shock or electric arc if live components are touched
If the MVPowerStation and its devices are not correctly disconnected, dangerous voltages may be present in the
components which, if touched, will result in death or serious injury.
• Disconnect the MVPowerStation (see Section7.6, page101).
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that the MVPowerStation and its devices are voltage-free.
Procedure:
1. Ensure that there are no foreign materials or objects in or on the MVPowerStation and its devices that are
flammable or that could otherwise endanger operational safety. If necessary, remove foreign materials and seal
any holes to prevent further intrusion.
2. Ensure that there are no objects under the medium-voltage compartment which endanger operational safety in
case of arc faults.
3. Ensure that there are no objects under the inverter compartment which prevent the air from circulating.
10 Maintenance
SMA Solar Technology AG
System ManualMVPS22JP-SH-en-11140
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