Important Safety Precautions - Siemens SINAMICS G150 Operating Manual

Electrical Installation
4.3

Important Safety Precautions

WARNING
The cabinet units are operated with high voltages.
All connection procedures must be carried out with the cabinet de-energized.
All work on the units must be carried out by trained personnel only.
Death, serious injury, or substantial material damage can result if these warnings
are not taken into account.
Work on an open device must be carried out with extreme caution because
external supply voltages may be present. The power and control terminals may be
live even when the motor is not running.
Dangerously high voltage levels are still present in the cabinet up to five minutes
after it has been disconnected due to the DC link capacitors. For this reason, the
cabinet should not be opened until after a reasonable period of time has elapsed.
Reforming the DC link capacitors:
The storage period should not exceed two years. If the device is stored for more
than two years, the DC link capacitors of the devices must be reformed during
commissioning.
The reforming procedure is described in "Maintenance and Servicing".
The operator is responsible for ensuring that the motor, converter, and other
devices are installed and connected in accordance with the recognized technical
rules in the country of installation and applicable regional guidelines. Special
attention should be paid to cable dimensioning, fuses, grounding, shutdown,
disconnection, and overcurrent protection.
If an item of protective gear trips in a branch circuit, a leakage current may have
been disconnected. To reduce the risk of fire or an electric shock, the current-
carrying parts and other components in the cabinet unit should be inspected and
damaged parts replaced. When an item of protective gear trips, the cause of the
trip must be identified and rectified.
NOTE
The standard version of the cabinet units are equipped with shock-hazard
protection in accordance with BGV A 2 (formerly VBG 4) to DIN 57 106, Part 100 /
VDE 0106, Part 100.
The version with option M60 features additional protective covers that offer a
higher level of shock-hazard protection for current-carrying parts when the cabinet
doors are open.
These protective covers may have to be removed during installation and
connection procedures. Once work has been completed, the protective covers
must be properly refitted.
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SINAMICS G150
Operating Manual