Operating and Maintenance Instructions
Inspection intervals
1HSB435409-100 en1 9
Condition of circuit-breaker during work:
a1) Circuit-breaker in service.
b1) Closing springs unloaded, circuit-breaker open, disconnected and earthed. If
thermovision measurement is included, it shall be done at normal load before
the circuit-breaker is disconnected.
c1) Closing springs unloaded, circuit-breaker open, disconnected and earthed.
Poles/Breaking units dismounted and transported to workshop.
d1) Closing springs unloaded, circuit-breaker open, disconnected and earthed.
Complete circuit-breaker including operating mechanism transported to
workshop.
Competence requirements:
a2) Substation personnel with no special training.
b2) Personnel authorised by ABB to carry out assembly, commissioning and
maintenance work.
c2) Personnel authorised by ABB to carry out assembly, commissioning and
maintenance work. Support from ABB may be necessary in certain cases.
3.2 Maintenance category A
To be inspected Inspection interval Measures / Instructions / Tools
1.
Ocular inspection 1-2 years Check external cleanliness, heater
element function, gas pressure, valves
and drainage holes.
No special tools needed.
See Chapter 2.1.3 and Chapter 2.1.4
and 1HSB515409-100 for BLG 1002A
or 1HSB535409-100 for BLK 222.
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