
IB131006EN
Page v
Effective 07/2017
SECTION 5: DESCRIPTION AND OPERATION
5-1 Introduction
................................................................................................................................................ 25
5-2 Interrupter Assembly .................................................................................................................................. 25
5-2.1 Vacuum
Interrupter .................................................................................................................. 25
5-2.2 Contact
Erosion Indication ....................................................................................................... 26
5-2.3 “T”
Cutout
Loading Spring Indicator ......................................................................................... 26
5-2.4 Contact
Wipe and Stroke ......................................................................................................... 26
5-2.5 Phase Barrier ........................................................................................................................... 26
5-3 Stored
Energy Mechanism ........................................................................................................................ 28
5-3.1
Operation of Stored Energy Mechanism ..................................................................................... 28
5-3.2 Charging
....................................................................................................................................... 31
5-3.3 Closing
Operation
....................................................................................................................31
5-3.4 Tripping
Operation
...................................................................................................................31
5-3.5 Trip
Free Operation ...................................................................................................................... 31
5-4 Control
Schemes
.................................................................................................................................31
5-4.1 Timing
.....................................................................................................................................35
5-4.2 Secondary
Disconnects
...........................................................................................................35
5-4.3 Undervoltage
Trip
Device
........................................................................................................35
5-5 Interlocks
and
Interfacing
.....................................................................................................................36
5-6 Levering
Mechanism
............................................................................................................................36
5-7 Operations
Counter
..............................................................................................................................36
5-8 Ground
Contact....................................................................................................................................36
5-9
MOC and TOC Switch Operations .......................................................................................................36
SECTION 6: INSPECTION, MAINTENANCE AND TROUBLESHOOTING
6-1 Introduction ..........................................................................................................................................37
6-2 Frequency of Inspection and Maintenance ...........................................................................................37
6-2.1
Qualified
Personnel
...............................................................................................................37
6-2.2 General
Torque Guidelines ....................................................................................................38
6-3
Inspection and Maintenance Procedures .............................................................................................38
6-4
Vacuum Interrupter Integrity Test .........................................................................................................40
6-5
Contact Erosion and Wipe ...................................................................................................................41
6-6 Insulation
.............................................................................................................................................41
6-7 Insulation
Integrity
Check
.....................................................................................................................42
6-8
Primary Circuit Resistance Check ........................................................................................................43
6-9 Mechanism
Check
...............................................................................................................................43
6-9.1 CloSure
TM
Test .......................................................................................................................43
6-10 Lubrication
...........................................................................................................................................47
6-11 Troubleshooting
Chart
.........................................................................................................................50
6-12
End of Life Procedure…………………………………………………………………………………………...50
6-13 Failure
Reporting…………………………………………………………………………………………………50
SECTION 7: RENEWAL PARTS
7-1 General ..............................................................................................................................................51
7-1.1 Ordering
Instructions
.............................................................................................................51
Содержание VCP-W
Страница 28: ...IB131006EN Page 22 Effective 07 2017 position Courtesy of NationalSwitchgear com...
Страница 39: ...IB131006EN Page 33 Effective 07 2017 Figure 5 3 Closing Cam and Trip Linkage Courtesy of NationalSwitchgear com...
Страница 40: ...IB131006EN Page 34 Effective 07 2017 Figure 5 4 charging schematic Courtesy of NationalSwitchgear com...
Страница 44: ...IB131006EN Page 38 Effective 07 2017 Figure 5 5A CONTINUED Courtesy of NationalSwitchgear com...
Страница 65: ...IB131006EN Page 59 Effective 07 2017 Courtesy of NationalSwitchgear com...
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