Siemens H-compact PLUS, Operating Instructions Manual

Page: 37 / 83

Start-up
7.2 Monitoring the temperature of the stator winding
WOGeneric TEAAC / 2008
Siemens AG Operating Instructions 1.03 1RQ671...-Z
35
Limit values of the anti-condensation heating insulation resistance
The insulation resistance of the anti-condensation heating with respect to the machine
housing should not be lower than 1 MΩ when measured at 500 V DC. [ID 33.02]
7.2 Monitoring the temperature of the stator winding
Measures
The connection cables include a current-dependent overload protection circuit.
You can also monitor the temperature of the machine or the winding with the temperature
sensors in the stator winding, which gives overload protection independent of the current.
7.3 Measures to be performed prior to commissioning
Overview
Once the system has been correctly installed, you should check the following prior to
commissioning:
● The machine has been properly installed and aligned.
● The machine is connected so that it rotates in the direction specified.
● The operating conditions correspond to the data specified on the rating plate.
● Any supplementary motor monitoring devices and equipment have been correctly
connected and are fully functional.
● If bearing thermometers have been fitted, the bearing temperatures are checked during
the initial run of the machine and the warning and shutdown values are set on the
monitoring device.
● The output elements are correctly set, e.g.,:
– Couplings are aligned and balanced.
– The belt on the belt drive is tensioned.
– At the gear element, there is gear tooth flank and crest clearance.
– There is radial clearance.
● The minimum insulation resistance values and the minimum air gap values are observed.
● The grounding and equipotential bonding connections have been made correctly.
● Any bearing insulation has been fitted in accordance with the diagram.
● All fixing bolts, connecting elements, and electrical connections have been tightened to
the specified torque.
● The rotor can spin without coming into contact with the stator.
● All touch protection measures for moving and live parts have been taken.