Siemens SIMOVERT MV Series Commissioning Instructions page 47

♦ Significant energy levels are saved in the drive converter DC link (capacitors).
♦ Hazardous voltages may be present in the drive converter for a somewhat
longer time after the equipment has been shut down.
♦ The discharge time of the DC link capacitors down to non-hazardous voltage
levels is less than 1 s as a result of the crowbar thyristor always
DC link bus is
long as the motor is rotating, e.g. for fault trips).
♦ The voltage DC link can also be charged through other components. Before
touching or coming into contact with live, components, it is
♦ Understand how the drive converter is connected into the power-on and power-
off circuits.
♦ Please observe all of the information in this section and on the product itself.
If this information is not observed, death, severe bodily injury and significant
material damage could result.
The electronic modules contact devices which can be destroyed by electrostatic
discharge. These components can be easily destroyed if they are incorrectly
handled. You should stand on an insulated (ESD compatible) surface, and ensure
that it is not grounded before you carry-out any work on the equipment.
Only qualified personnel may be involved in the configuring, engineering,
installation, start-up and operation of SIMOVERT MV drive converters and the
open-loop and closed-loop control.
It is assumed that personnel have been trained in the handling of the digital
SIMADYN D control system.
The
and start-up of the drive converter.
Siemens AG 6SE8004-0BH76
SIMOVERT MV Commissioning Instructions
before touching it! Voltage can still be present as
to check and ensure that they are in a
diagrams supplied with the equipment are
:
that the
.
for the function
47