Safety Information - Siemens SINAMICS S120 System Manual

8.4.2

Safety information

Danger to life if the fundamental safety instructions and remaining risks are not carefully
observed
If the fundamental safety instructions and remaining risks in Chapter 1 are not observed,
accidents involving severe injuries or death may occur.
• Adhere to the fundamental safety instructions.
• When assessing the risk, take into account residual risks.
Danger to life due to electric shock and fire hazard caused by overcurrent protective
equipment tripping too late
Overcurrent protective equipment that trips too late or not all can cause electric shock or
fire.
• To protect personnel and for fire protection purposes, at the infeed point, the short-
Danger to life through electric shock due to a high DC link voltage
As long as the Line Module is connected to the line supply, the DC link is charged with a
high voltage. Contact with components can result in death or serious injury.
• Isolate the Line Module from the line supply during installation and maintenance work,
Danger to life through electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to 5 minutes after
the power supply has been switched off.
Contact with live parts can result in death or serious injury.
• Only open the device after 5 minutes have elapsed.
• Measure the voltage before starting work on the DCP and DCN DC link terminals.
Grid infeed
System Manual, 04/2015, A5E03347436A
8.4 Air-cooled Active Line Modules for the grid infeed, chassis format
WARNING
DANGER
circuit rating and loop impedance must match the specifications in the documentation so
that the installed overcurrent protection devices trip within the specified time.
DANGER
e.g. via the line contactor or main switch.
DANGER
Device overview
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