Cleaning And Lubrication Of The Operating Mechanism; Inspection Of Electrical And Mechanical Accessories; Inspection Of The Protection Release - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions
Low voltage air circuit-breakers
Hide thumbs
Also See for SACE Emax 2:
Table of Contents
Advertisement
Cleaning and lubrication of the
operating mechanism
Inspection of electrical and
mechanical accessories
Inspection of the protection
102 | © 2014 ABB | 1SDH000999R0002 - L8569
To clean and lubricate:
1.
Clean the points indicated in the illustration. Use a laminate thinner such as Henkel 273471 or Chemma
18 or equivalent if there is a heavy coating of dirt.
2.
Lubricate the opening and closing latches and the shafts in the indicated points using Mobilgrease 28
(EXXON MOBIL).
3.
Make sure that the opening and closing shafts are free to turn.
Figure 78 - Lubrication of the shafts and closing and opening latches
Check the accessories:
1.
Check that the accessories are securely fixed to the circuit-breaker.
2.
Check that the accessories are connected correctly to the circuit-breaker.
3.
Make sure that the coils (YU-YO-YC), if present, are in good condition (no excessive wear and tear,
overheating, rupture).
4.
Make sure that the mechanical operation counter functions correctly (if present) by operating the
circuit-breaker.
5.
Check the wear on the brushes of the gearmotor and if necessary replace them.
Check that the release is in good condition:
release
1.
Power the protection release with an Ekip TT battery unit.
2.
Check the correct operation of the protection release: tripping test with "Trip Test" and "Self-test".
3.
With an Ekip Dip release, verify the absence of alarms via the front LEDs.
4.
With an Ekip Touch release, verify the absence of alarms via the display and the front LEDs.
5.
Make sure that the cables are correctly connected to the release modules and to the release itself (if
applicable).
6.
On an Ekip Touch release check the percentage of wear on the contacts of the circuit-breaker.
7.
Finally, remove the Ekip TT battery unit.
Putting into service and maintenance | 4 - Maintenance operations
ABB | SACE Emax 2
Advertisement
Table of Contents
