SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual page 50

5 Installation
Danger to life from electric shock when entering the PV field
Ground-fault monitoring does not provide protection from personal injury. PV modules which are grounded with
ground-fault monitoring discharge voltage to ground. Entering the PV field can result in lethal electric shocks.
• Ensure that the insulation resistance of the PV field exceeds the minimum value. The minimum value of the
insulation resistance is: 1 kΩ.
• Before entering the PV field, switch the PV modules to insulated operation.
• Configure the PV power plant as a closed electrical operating area.
Danger of falling from service platforms
Icy, moist or sand-covered service platforms may be slippery. Service personnel can be injured by slipping or falling
from service platforms.
• Wear suitable personal protective equipment for all work on the product.
• Before stepping onto the service platform, ensure that there is no layer of snow, ice, sand or moisture on the
platform.
• Do not keep any objects near or on the service platforms.
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.
Damage to optical fibers due to too tight bend radii
Excessive bending or kinking will damage the optical fibers.
• Observe the minimum permissible bend radii of the optical fibers.
50 MVPS22JP-SH-en-11
SMA Solar Technology AG
System Manual