Operating and Maintenance Instructions
Inspection intervals
1HSB435409-100 en1
13
6.
Main current circuit
•
Resistance check.
15 years or 5,000 mech CLOSE/
OPEN operations.
Circuit-breakers only operating
<100 CLOSE/OPEN
operations/year after 6-8 years or
2500 mech CLOSE/OPEN
operations.
Check resistance of circuit-breaker.
Resistance bridge, test current min.
200 A DC.
Resistance value as specified in
applicable Assembly instructions for the
circuit-breaker in question.
Higher values allowed for frequent
operation with small currents (
≤400Α)
.
Calculation of permissible resistance:
7a.
Contact system
•
Opening position
15 years or 5,000 mech. CLOSE/
OPEN operations.
’
Inspection of reference holes in outer
lever and mechanism housing.
See applicable Assembly instructions
for the circuit-breaker in question.
7b.
Operating
characteristics
•
Opening time
•
Closing time
•
Close-Open time
•
Phase discrepancy
•
Auxiliary switches
•
Contact travel
•
Contact damping.
15 years or 5,000 mech. CLOSE/
OPEN operations.
Measurement with electronic timer.
Nominal operating voltage.
For times, see the applicable Assembly
instructions for the circuit-breaker.
Max phase discrepancy between
phases:
at closing 4 ms; at opening 3 ms.
max discrepancy between breaks in the
same phase:
at closing 3 ms; At opening 2 ms.
See Manual 1HSB515409-100 for BLG
1002A or 1HSB535409-100 for BLK
222.
To be inspected
Inspection interval
Measures / Instructions /
Tools
R
Rn
2
-------
In
I
-----
1.65
=
R =
Permissible increase in
resistance
R
n
= Max. resistance as specified
in operating values
I
n
=
Rated current as specified on
rating plate
I
=
Current for which max.
resistance is calculated.
Summary of Contents for SF6 LTB 245E1 BLG 1002A
Page 1: ...Product Manual 1HSB435416 2 en Rev 1 LTB 245E1 BLG 1002A 3 pole operation ...
Page 92: ...ABB Switchgear SF6 Circuit Breaker Circuit breakers HPL and LTB 1HSB445409 1 en0 Lubricants ...
Page 198: ......
Page 199: ......
Page 209: ......
Page 210: ......