Siemens SINAMICS S120 Getting Started page 20

Fundamental safety instructions
1.1 General safety instructions
Risk of electric shock and fire from supply networks with an excessively low impedance
Excessively high short-circuit currents can lead to the protective devices not being able to
interrupt these short-circuit currents and being destroyed, and thus causing electric shock
or a fire.
• Ensure that the prospective short-circuit current at the line terminal of the inverter does
Electric shock if there is no ground connection
For missing or incorrectly implemented protective conductor connection for devices with
protection class I, high voltages can be present at open, exposed parts, which when
touched, can result in death or severe injury.
• Ground the device in compliance with the applicable regulations.
Electric shock due to connection to an unsuitable power supply
When equipment is connected to an unsuitable power supply, exposed components may
carry a hazardous voltage that might result in serious injury or death.
• Only use power supplies that provide SELV (Safety Extra Low Voltage) or PELV-
Electric shock due to equipment damage
Improper handling may cause damage to equipment. For damaged devices, hazardous
voltages can be present at the enclosure or at exposed components; if touched, this can
result in death or severe injury.
• Ensure compliance with the limit values specified in the technical data during transport,
• Do not use any damaged devices.
Electric shock due to unconnected cable shield
Hazardous touch voltages can occur through capacitive cross-coupling due to unconnected
cable shields.
• As a minimum, connect cable shields and the conductors of power cables that are not
18
WARNING
not exceed the breaking capacity (SCCR or Icc) of the protective device used.
WARNING
WARNING
(Protective Extra Low Voltage) output voltages for all connections and terminals of the
electronics modules.
WARNING
storage and operation.
WARNING
used (e.g. brake cores) at one end at the grounded housing potential.
Getting Started, 12/2018, 6SL3097-5AG30-0BP0