SMA TCS 500SC-JP - Manual (Page 46)

10 Maintenance SMA Solar Technology AG
46 TCS-JP-IA-en-10 Installation Manual
10.4 Electrical and Mechanical Maintenance
10.4.1 Checking the Bolted Connections of the Power Cabling
Procedure:
• Check that all bolted connections are tight.
If any bolted connections are loose, tighten them with a torque wrench. Always adhere to the torque specifications.
• Check the insulation and connections for discoloration and signs of wear.
If the insulation or connections are discolored or show signs of wear, contact the SMA Service Line.
'$1*(5
Danger to life from electric shock due to incorrectly disconnected Transformer Compact Station
If the Transformer Compact Station 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 Transformer Compact Station from voltage sources (see Section 9, page 40).
• Ensure that the Transformer Compact Station and its devices are voltage-free.
:$51,1*
Risk of fire due to failure to observe torque specifications on live bolted connections
Failure to follow the specified torques reduces the ampacity of live bolted connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that live bolted connections are always tightened with the specified torque.
• When working on the device, use suitable tools only.
• Avoid repeated tightening of live bolted connections as this may result in inadmissibly high torques.
/05*$&
Damage to bolted connections if the permitted torques are exceeded
Tightening bolted connections that have already reached their permitted torque can damage these connections.
• Only tighten loose bolted connections to the prescribed torque. Contact the SMA Service Line if specifications are
missing.