s
Product documentation 1D
3.8.
en
Rev. E, 10/13
page 32/42
4.4.5.2
Preventive inspection II.
Is carried out regularly after
5000
operational hours from the beginning.
The inspection consists of:
a)
Inspection of cleanliness of cooling surfaces of machine.
b)
Measurement of stator winding insulation resistance.
c)
Measurement of voltage, current, temperature, bearings and oscillations.
d)
Inspection of bearings operation.
e)
Inspection of connection to the net and tightening of terminal bolts.
f)
Inspection of tightness of terminal box cover.
g)
Inspection of function of additional equipment.
Any found imperfections must be repaired prior to putting the machine into operation.
4.4.5.3
Preventive inspection III.
Is carried out regularly after
15000
operational hours from the beginning.
The inspection consists of:
a)
Thorough cleaning.
b)
Thorough inspection.
c)
Reparation of any imperfections.
d)
Bearings re-lubrication.
e)
Measurement of stator winding insulation resistance.
f)
Measurement of rotor winding circuit insulation resistance.( rectifier have to be short-circuited – all
connectors of rectifier have to be connected, measuring voltage is 500V)
g)
Tests.
Any found imperfections must be repaired prior to putting the machine into operation.
All inspections must be recorded in the generator operational logbook.
4.4.6
Putting out of operation
Loading must be disconnected before generator is put out of operation. Next steps should follow
operational instructions prescribed for the whole set.
4.4.7
Operational log
The operational log serves for recording all events that relate to operation, maintenance and revisions of the
generator. Keep the records starting from the storage period before putting the generator into operation.
Record the current number of the operational hours to the "Operational hours" box starting from the first
commissioning.
Record also all events that are related to winding insulating resistance, drying, and record parameter values
(e.g. voltage, current, bearing temperature, vibration, etc.) during both the commissioning and normal
operation.
The operational log is also used to record the results of all inspections and revisions. All machine
modifications, part replacement, faults of generator, accessories, switching and breaking elements including
their replacement are recorded to the operational log. Moreover, emergency events are also recorded (e.g.
overload, short circuit, etc.) even if no generator failure occurred.
The record in the operational log may refer to another document in which the activity is evidently recorded.
