SMA MEDIUM VOLTAGE POWER STATION 500SC-JP - Maintenance; Safety during Maintenance

10 Maintenance
10.1 Safety during Maintenance
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• After switching off the inverter, wait at least 15minutes before opening it to allow the capacitors to discharge
completely (see Section7.4, page100).
Damage to the devices due to sand, dust or moisture penetration
Sand, dust or moisture penetration can damage the devices of the MVPowerStation or impair their functionality.
• Do not open any devices during a sandstorm, precipitation or when humidity exceeds 95%.
• Only perform maintenance work when the environment is dry and free of dust.
• If the installation, maintenance or commissioning process is interrupted, mount all enclosure parts and close all
doors.
Damage to electronic components due to electrostatic discharge
Electrostatic discharge can damage or destroy electronic components.
• Observe the ESD safety regulations when working on the product.
• Wear suitable personal protective equipment for all work on the product.
• Discharge electrostatic charge by touching grounded enclosure parts or other grounded elements. Only then is
it safe to touch electronic components.
10.2 Maintenance Schedule and Consumables
10.2.1 Notes on Maintenance Work
Observance of maintenance intervals ensures trouble-free operation of the MVPowerStation.
Adverse ambient conditions and installation in the desert
The location of the system and ambient conditions influence the maintenance intervals. If the MVPowerStation is
installed in adverse ambient conditions, SMASolarTechnologyAG recommends a monthly inspection in order to
determine the need for maintenance. The maintenance intervals are to be shortened depending on the determined
maintenance requirements. In particular, cleaning work and corrosion protection may be necessary more
frequently.
If the MVPowerStation is installed in a desert region, the maintenance intervals must be reduced. SMA
recommends to check the function of the devices in the MVPowerStation after each sandstorm.
10 Maintenance
SMA Solar Technology AG
System Manual 133MVPS22JP-SH-en-11