Safety notes
1.1 General safety instructions
SINAMICS DCP
Operating Instructions, 09/2019, A5E34382853K
13
Electric shock due to residual charges in power components
Because of the 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.
• Wait for 5 minutes before you check that the unit really is in a no-voltage condition and
start work.
Property damage due to loose power connections
Insufficient tightening torques or vibration can result in loose power connections. This can
result in damage due to fire, device defects, or malfunctions.
• Tighten all power connections to the prescribed torque.
• Check all power connections at regular intervals, particularly after equipment has been
transported.
Spread of fire from built-in devices
In the event of fire outbreak, the enclosures of built-in devices cannot prevent the escape of
fire and smoke. This can result in serious personal injury or property damage.
• Install built-in units in a suitable metal cabinet in such a way that personnel are
protected against fire and smoke, or take other appropriate measures to protect
personnel.
• Ensure that smoke can only escape via controlled and monitored paths.
Failure of pacemakers or implant malfunctions due to electromagnetic fields
Electromagnetic fields (EMF) are generated by the operation of electrical power equipment,
such as transformers, inverters, or motors. People with pacemakers or implants in the
immediate vicinity of this equipment are at particular risk.
• If you have a heart pacemaker or implant, maintain a minimum distance of 2 m from
electrical power equipment.
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