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PowlVac® ASD 27kV & 38kV Vacuum Circuit Breaker
IB-65100
Contents
Ch 4 Installation..............................................................................................................23
A. R
ECEIVING
........................................................................................................................................................ 23
B. H
ANDLING
........................................................................................................................................................ 23
C. S
TORAGE
.......................................................................................................................................................... 23
D. P
LACING
THE
C
IRCUIT
B
REAKER
I
NTO
S
ERVICE
............................................................................................................ 24
1) High-Voltage Insulation Integrity .......................................................................................................................................24
2) Vacuum
Integrity
....................................................................................................................................................................25
3) Control Voltage Insulation Integrity ..................................................................................................................................26
4) Mechanical Operation Check ..............................................................................................................................................26
5) Electrical Operation Check ...................................................................................................................................................27
E. I
NSERTING
THE
C
IRCUIT
B
REAKER
I
NTO
THE
S
WITCHGEAR
E
QUIPMENT
.............................................................................. 27
1) Inserting the Circuit Breaker to the Connected Position ...............................................................................................27
2) Inserting the Circuit Breaker to the Test/Disconnect Position .....................................................................................29
F. R
EMOVING
THE
C
IRCUIT
B
REAKER
FROM
THE
S
WITCHGEAR
E
QUIPMENT
............................................................................ 29
1) Removing the Circuit Breaker from the Connected to the Test/Disconnected Position ........................................29
2) Removing the Circuit Breaker from the Test/Disconnect Position out of the Circuit Breaker Compartment ...30
3) Removing the Circuit Breaker with Test Plug Interlock Engaged ................................................................................30
Ch 5 Maintenance ...........................................................................................................31
A. G
ENERAL
D
ESCRIPTION
........................................................................................................................................ 31
1) Introduction
.............................................................................................................................................................................31
2) Inspection and Cleaning ......................................................................................................................................................32
B. M
ECHANISM
A
REA
............................................................................................................................................. 33
1) Mechanical
Operation
..........................................................................................................................................................33
2) Lubrication
...............................................................................................................................................................................33
3) Closing Spring Removal ........................................................................................................................................................37
4) Slow Closing of Mechanism .................................................................................................................................................38
5) Mechanism
Adjustments
......................................................................................................................................................38
6) Electrical
Operation
...............................................................................................................................................................44
C. V
ACUUM
I
NTERRUPTER
AND
C
ONTACT
A
REA
............................................................................................................. 44
1) Vacuum Interrupter and Contact Erosion ........................................................................................................................44
2) Vacuum
Integrity
....................................................................................................................................................................45
3) Mechanical Adjustment of Vacuum Interrupters .................................................................................................................45
D. O
PTIONAL
M
AINTENANCE
P
ROCEDURES
................................................................................................................... 45
1) High Potential Tests ...............................................................................................................................................................45
2) Timing
......................................................................................................................................................................................46
3) Primary Resistance Check ....................................................................................................................................................46
