Table of Contents
Advertisement
50
U n i G e a r Z S 1 I N S T A L L A T I O N , O P E R A T I O N A N D M A I N T E N A N C E
•
The auxiliary limit switch (Fig. 72) for earthing
switch OFF must be operated on earthing
switches with manual mecha nisms during
the opening movement of the slide (Fig. 72),
and before half of the hexagonal shaft has
become visible, or 1 mm before the tab of the
slide makes contact with the armature of the
de-energized locking magnet
8.5.2 Repairs on withdrawable parts
When functional tests are carried out on
withdrawable parts, compliance with the
conditions listed below should also be checked.
The following operating instructions must also
be followed, together with this instruction
manual in the individual cases concerned.
•
Vacuum circuit-breaker: type VD4
Thread
M10
8.6 Risk-based maintenance
ABB supports UniGear users with optimized and
cost effective strategies to ensure that the correct
actions are implemented at the right time. Asset
managers are fully supported in moving from
conventional approaches (''corrective maintenance''
and ''preventive maintenance'') to advanced
strategies (''risk-based maintenance'' and
''condition-based maintenance'').
—
Figure 72 Manual earthing switch mechanism with auxiliary switches (side cover has been removed)
Rated tightening torque ungreased
50 Nm
14.2
In this way, the service activity is no longer driven
by predefined timeframes, observations and past
experiences, but takes into account the actual
condition of the equipment, the required reliability
level and the expetation for life time extension.
This assessment is performed by trained
technicians as part of risk-based maintenance
programs or is carried out automatically by on-line
monitoring systems for condition-based
maintenance solutions.
Please refer to brochure 1VCP000427 - maintenance
by ABB for more details on risk-based
maintenance.
8.7 Spare parts, auxiliary materials and
lubricants Spare parts
A spare parts list is available on request for
procurement of spare parts. It basically includes
moving parts and parts subject to wear. When
parts are required, the serial number of the
relevant switchgear or switching device should
always be quoted.
Auxiliary materials, lubricants
Lubricant
•
Isoflex topas NB 52
Halogen-free cleansers (optional)
•
Ethanol F 25 M (for general cleaning)
Touch-up paint (optional)
•
Standard colour RAL7035
14.1
11.3
Auxiliary switch – earthing switch OFF
11.4
Auxiliary switch – earthing switch ON
14.1
Drive shaft (earthing switch)
14.2
Slide
14.3
Cam plate, adjustable
14.3
11.3
11.4
Hide quick links:
Advertisement
Table of Contents
