TABLE OF CONTENTS
SECTION 1: INTRODUCTION....................................................................................................................................................................................1
1-1
PRELIMINARY COMMENTS AND SAFETY PRE- CAUTIONS..................................................................................................................................1
1-2
GENERAL INFORMATION...................................................................................................................................................................................1
1-3
TYPE VCP-WL VACUUM CIRCUIT BREAKER ELEMENT RATINGS.........................................................................................................................2
1-4
OUTLINES AND DIMENSIONS.............................................................................................................................................................................3
SECTION 2: SAFE PRACTICES................................................................................................................................................................................... 5
2-1
RECOMMENDATIONS.........................................................................................................................................................................................5
SECTION 3: RECEIVING, HANDLING AND STORAGE..................................................................................................................................................6
3-1
GENERAL............................................................................................................................................................................................................6
3-2
RECEIVING..........................................................................................................................................................................................................6
3-3
HANDLING..........................................................................................................................................................................................................6
3-4
STORAGE............................................................................................................................................................................................................6
3-5
TOOLS AND ACCESSORIES..................................................................................................................................................................................7
3-6
TYPE VCP-WL VACUUM CIRCUIT BREAKER ELEMENT WEIGHTS........................................................................................................................7
SECTION 4: INITIAL INSPECTION AND INSTALLATION............................................................................................................................................ 14
4-1
INTRODUCTION................................................................................................................................................................................................14
4-2
VACUUM INTERRUPTER INTEGRITY.................................................................................................................................................................14
4-3
INSULATION.....................................................................................................................................................................................................14
4-4
PRIMARY CIRCUIT RESISTANCE........................................................................................................................................................................14
4-5
NAMEPLATE.....................................................................................................................................................................................................14
4-6
ELECTRICAL OPERATION AND MECHANICAL OPEN CHECK..............................................................................................................................14
4-7
CIRCUIT BREAKER/STRUCTURE INTERFACING.................................................................................................................................................21
SECTION 5: DESCRIPTION AND OPERATION........................................................................................................................................................23
5-1
INTRODUCTION................................................................................................................................................................................................23
5-2
INTERRUPTER ASSEMBLY.................................................................................................................................................................................23
5-3
ELECTROMAGNETIC MECHANISM...................................................................................................................................................................26
5-4
CONTROL SCHEMES.........................................................................................................................................................................................29
5-5
INTERLOCKS AND INTERFACING......................................................................................................................................................................29
5-6
LEVERING MECHANISM...................................................................................................................................................................................29
5-7
OPERATIONS COUNTER....................................................................................................................................................................................30
5-8
GROUND CONTACT..........................................................................................................................................................................................30
5-9
MOC AND TOC SWITCH OPERATIONS..............................................................................................................................................................30
SECTION 6: INSPECTION, MAINTENANCE AND TROUBLESHOOTING .................................................................................................................31
6-1
INTRODUCTION................................................................................................................................................................................................31
6-2
FREQUENCY OF INSPECTION AND MAINTENANCE..........................................................................................................................................31
6-3
INSPECTION AND MAINTENANCE PROCEDURES.............................................................................................................................................33
6-4
VACUUM INTERRUPTER INTEGRITY TEST.........................................................................................................................................................34
6-5
CONTACT EROSION AND WIPE.........................................................................................................................................................................35
6-6
INSULATION....................................................................................................................................................................................................35
6-7
INSULATION INTEGRITY CHECK........................................................................................................................................................................35
6-8
PRIMARY CIRCUIT RESISTANCE CHECK.............................................................................................................................................................36
6-9
MECHANISM CHECK.........................................................................................................................................................................................36
6-10
LUBRICATION...................................................................................................................................................................................................36
6-11
TROUBLESHOOTING CHART (C
ONTINUED
N
EXT
P
AGE
).........................................................................................................................................37
6-11 TROUBLESHOOTING CHART (C
ONTINUED
)..........................................................................................................................................................38
6-12
END OF LIFE PROCEDURES...............................................................................................................................................................................39
6-13
FAILURE REPORTING........................................................................................................................................................................................39
6-14
REPLACEMENT PARTS......................................................................................................................................................................................39
