Maintenance; Maintenance Schedule - ABB HPA 12kV Instruction For Installation, Service And Maintenance

2.3

Maintenance

2.3.1 Maintenance schedule (As per Drg. 1VYN400290-005 Pg. 11 & 12)
Sr. Description
No.
01 CHECKING OF OPERATING
MECHANISM.
1.1 Checking of fastener tightness fig. 7A
Item B. H. L. & M.
1.2 Checking of shock absorbers for
Leakage or stuck-up fig. 7A item F & G
1.3 Checking of top & bottom trip free
mechanism, cap & coupling
Fig. 7A, item J & K
1.4 Closing & Tripping spring assembly
& split pin (N) on them (fig. 7A)
1.5 Bearing item (P) fig. 7A
1.6 Checking of setting
*Coupling and knife catch gap
(Setting 1, fig. 7B)
*Bottom TFM and CAP gap
(Setting 2, fig. 7A) both gaps should
be between 1 - 2 mm
1.7 Spring cut off micro switches.
02 OVERHAUL & LUBRICATION OF
CHARGING DEVICE AND
OPERATING GEAR
03 GAS PRESSURE CHECK
NOTE
1) Complete overhaul of circuit breaker with replacement of poles to be done after 10,000 operations.
2) Ask ABB for details of overhaul procedures.
Before Interval
Start up of 6 months of 5 years 1000 operation
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(10)
Interval Every
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