ABB SF6 LTB 245E1 BLG 1002A Product Manual page 86

Operating and Maintenance Instructions
To be inspected
8c.
Dashpot
8d.
Catch-gears
8e.
Coils
8f.
Mechanical interlocking
Only applicable for BLG
1002A
1HSB435409-100 en1
Inspection interval
15 years or 5,000 mechanical
Close-Open operations.
15 years or 5,000 mechanical
Close-Open operations.
15 years or 5,000 mech CLOSE/
OPEN operations.
15 years or 5,000 mech. CLOSE/
OPEN operations.
Inspection intervals
Measures / Instructions /
Checking of oil-level or recording of
damping during operation alternatively.
Recording of damping during operation
is made by means of a circuit breaker
analyzer with transducers connected to:
• main shaft of the circuit breaker
mechanism when checking the
opening dash-pot
• main shaft (cam shaft) of the
operating mechanism when
checking the closing dash-pot.
These measurements are to be carried
out only by specially trained personal.
See Manual 1HSB515409-100 for BLG
1002A or 1HSB535409-100 for BLK
222.
Visual control of the adjustment.
Play of gaps in the catch-gears acc. to
Manual 1HSB515409-100 for BLG
1002A or 1HSB535409-100 for BLK
222.
Greasing of shafts and catch surfaces
with Grease "L" acc. to 1HSB445409-1.
Change the signal from coil 1 to coil 2.
The resistances of coils and coil
currents are allowed to differ +/- 10%
from value measured at routine test.
In OPEN position the distance between
the interlocking arm and the
interlocking disc shall be min. 2 mm.
In CLOSE position there must be full
contact between the arm and disc (No
gap is permitted).
See Manual 1HSB515409-100.
Tools
15