Replacing Components; Safety Information - Siemens SINAMICS S120 Equipment Manual
Chassis liquid cooled power units
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Also See for SINAMICS S120:
- Function manual (1094 pages) ,
- Diagnostic manual (947 pages) ,
- Manual (848 pages)
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Maintenance and servicing
9.4 Replacing components
9.4
Replacing components
9.4.1
Safety information
When transporting the devices and replacing components, note the following:
• Some of the devices and components are heavy (e.g. > 30 kg) and top-heavy.
• Due to their weight, the devices must be handled with care by trained personnel.
• Serious injury or even death and substantial material damage can occur if the devices
The devices are operated with high voltages.
All connection work must be carried out when the cabinet is de-energized!
All work on the device 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 device up to 5 min 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.
Five safety rules
When carrying out any kind of work on electrical devices, the "five safety rules" according to
EN 50110 must always be observed:
1. Isolate the equipment from the power supply
2. Protect against reconnection.
3. Make sure that the equipment is de-energized.
4. Ground and short-circuit.
5. Cover or enclose adjacent components that are still live.
CAUTION
The busbars and coolant connections which stick out of the module must never be used as
handles or support surfaces when the units are transported.
252
WARNING
are not lifted or transported properly.
WARNING
DANGER
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
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