ABB SF6 LTB 245E1 BLG 1002A, Product Manual

Page: 85 / 231

Inspection intervals Operating and Maintenance Instructions
14
1HSB435409-100 en1
8a.
Operational availability
• Pull rod system
• Safety release of
operation
• Anti-pumping relay
15 years or 5,000 mechanical
Close-Open operations.
15 years or 5,000 mechanical
Close-Open operations.
’
15 years or 5,000 mechanical
Close-Open operations.
Check the tightening torque on bolts in
the pull-rod system.
Torque wrench.
Torque: See applicable Assembly
instructions for the circuit-breaker.
Measurement of minimum operating
voltage.
Closing coil: < 85% IEC ( < 72 % ANSI)
of nominal voltage.
Opening coil: < 70% IEC (< 56 % ANSI)
of nominal voltage.
Variable D.C. voltage source required.
Checking anti-pumping function:
The circuit-breaker in open position, the
operating mechanism charged, CLOSE
and OPEN impulse given
simultaneously (the close button shall
be pressed).
The circuit-breaker will make a CLOSE-
OPEN operation and may not close
when the operating mechanism is
charged.
The pumping device must stay as long
as the close impulse remain. Lowest
operating voltage of the relay is
measured (85% of nominal).
8b.
Motor current 15 years or 5,000 mechanical
Close-Open operations. Check the carbon on the motor/motors.
If they are below 10 mm, change
carbon.
The motor current is to be measured at
the end of the charging operation. Max
allowed motor current is 110% of value
measured at routine test.
The charging time is allowed to change
up to 30% from value measured at
routine test.
The motor shall be able to charge the
springs at min. 85% of nominal voltage
(IEC).
See 1HSB515409-100 for BLG 1002A
or 1HSB535409-100 for BLK 222.
To be inspected Inspection interval Measures / Instructions /
Tools