Electrical connection
● The grounding and equipotential bonding connections have been made correctly.
● The machine is connected so that it rotates in the direction specified.
● Appropriately configured control and speed monitoring functions ensure that the motor
cannot exceed the permissible speeds specified in the technical data. See also the system-
specific documentation.
● The minimum insulation resistance values are within tolerance.
● Minimum air clearances have been maintained.
● Any supplementary motor monitoring devices and equipment have been correctly
connected and are fully functional. Refer to the "Technical data and drawings" section for
more information.
● The values for "Alarm" and "Shut down" at the monitoring equipment are set to the values
listed in the "Explanatory text for the machine dimension drawing" section.
● All brakes and backstops are operating correctly.
Switching overvoltages
When high-voltage machines with starting current I
A
≤ 600 A are switched off while starting or
after they have been blocked, then in individual cases inadmissibly high switching overvoltages
for the stator winding insulation can occur through multiple restrikes.
The peak voltages which arise as a result can damage the winding insulation.
● If you are using vacuum circuit breakers and vacuum contactors, use an appropriate surge
suppressor, such as the Siemens 3EF (zinc oxide varistor with spark gap).
● An additional RC arrester (resistor and capacitor connected in series) makes sense at
unfavorable operating points/under unfavorable line supply conditions.
See also
Switching high-voltage motors (Page 26)
Converter operation
● If the design of the motor requires connection to a particular converter type, the rating plate
will contain corresponding additional information.
● The converter is correctly parameterized. The parameterization data is specified on the
rating plate of the machine. Information about the parameters is available in the operating
instructions for the converter.
● Any supplementary motor monitoring devices and equipment have been correctly
connected and are functioning correctly.
● In continuous operation, the motor cannot exceed the specified upper speed limit n
max
or
undershoot the lower speed limit n
min
.
The permissible acceleration time to the limit speed n
min
depends on the parameter
assignment.
● The bearing insulation should be implemented as shown on the plates.
Commissioning
7.1 Prior to commissioning
SIMOTICS HV M 1RN76308PR900CG0-Z
72 Operating Instructions 07/2018
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