Important Safety Precautions - Siemens SINAMICS S150 Operating Instructions Manual

4.3

Important safety precautions

The cabinet units are operated with high voltages.
All connection procedures must be carried out when the cabinet is de-energized.
All work on the device must be carried out by trained personnel only.
Non-observance of this warning can result in death, severe personal injury or substantial
property damage.
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 device 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 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, its DC link capacitors 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 recognized engineering practice in the country
of installation and in compliance with applicable regional regulations. 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 fault current may have been
disconnected. To reduce the risk of fire or an electric shock, current-conducting 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
Standard cabinet units are equipped with touch protection to BGV A 3 in accordance with
DIN 57 106, Part 100/VDE 0106, Part 100 (Germany).
The version with option M60 features additional protective covers that offer a higher level of
touch protection for current-conducting 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.
Note
On systems with a grounded phase conductor and a line voltage >600 V AC, line-side
components should be installed to limit overvoltages to overvoltage category II in
accordance with IEC 60664-1.
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
WARNING
Electrical installation
4.3 Important safety precautions
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