Routine Inspections - ABB GSec/T1 Instructions For Installation, Operation And Maintenance

9. Routine inspections

– The routine inspections must be performed by our
personnel or suitably qualified customer's personnel with
in-depth knowledge of the apparatus.
– Before proceeding with any operation, always make sure
that the apparatus is in the open position with the springs
discharged.
9.1. General information
During normal service, the switch-disconnectors are
maintenance-free. Any interventions required basically depend
on the severity of the service conditions, i.e. on various
different factors such as the frequency of the operations, the
interrupted current values, the relative power factor and the
installation site. For precautionary reasons, an inspection
schedule is given in the table in the following section,
along with the frequency with which the apparatus must be
9.1.1. Inspection schedule
Part liable to inspection
1 Perform a few mechanical closing and
opening operations on the apparatus.
2 Visual examination of the insulating
parts.
3 Auxiliary contacts and relays.
4 Auxiliary circuit conductors.
5 Interlocks.
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checked. It is advisable to comply with the indications in the
table for the first interventions.
Optimal time limits for carrying out successive operations can
be established on the basis of the results obtained during the
routine inspections.
It is advisable to record all the operations performed in detail
on a maintenance card and service book, along with the date,
description of the fault and reference data allowing the device
to be identified, etc.
Refer to article 10 of standard IEC EN 60694 if further details
are required.
Do not hestitate to call us if problems arise. It is always a
good idea to inspect the apparatus (screw and bolt tightness
- abnormal heating, etc.) a few months after it has been put
into service.
The following table gives the indicative frequencies with which
inspections should be made.
Intervals Operation required
3 years. Make sure that the operating and transmission levers function correctly.
The apparatus must operate regularly without stopping in intermediate
positions and the applied torque must not exceed 100 Nm.
3 years, or depending on The insulating parts must be free from any built-up dust, dirt, cracks,
the degree of pollution in traces of surface discharges or damage. Remove the dust and dirt with
the environment. a vacuum cleaner and clean, dry cloths.
5 years. Make sure that operation and the signals are correct.
5 years. Check whether any of the wiring fasteners are slack or broken and make
sure that the connections are well tightened.
5 years. Make sure that the devices function correctly.