Installation; Safety During Installation - SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual

SMA Solar Technology AG

5 Installation

5.1

Safety during Installation

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).
Danger to life from electric shock due to ground fault
If a ground fault has occurred, parts of the PV power plant that are supposedly grounded may in fact be live.
Touching incorrectly grounded parts of the PV power plant results in death or serious injuries from electric shock.
• Before working on the PV power plant, ensure that no ground fault is present.
• Wear suitable personal protective equipment for all work on the device.
Danger to life from electric shock due to live DC cables
DC cables connected to PV modules that are exposed to sunlight carry live voltage. Touching live cables results in
death or serious injury due to electric shock.
• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.
• Wear suitable personal protective equipment for all work on the device.
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the exact torque specified in this document.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
System Manual MVPS22JP-SH-en-11
5 Installation
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