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Instruction Book
Effective: March 2007
Page v
I.B. 6513C80G
For more information visit:
www.EatonElectrical.com
PAGE
5-4
Interlocks ..........................................................................................................................................................................29
5-4.1
Breaker-Cell Coding Plates ..............................................................................................................................29
5-4.2
Levering-in Interlock .........................................................................................................................................29
5-4.3
Anti-Close Interlock ...........................................................................................................................................30
5-4.4
Floor Tripping and Closing Spring Release Interlocks .................................................................................30
5-4.5
Rail Latch ...........................................................................................................................................................30
5-5
Miscellaneous Items .......................................................................................................................................................32
5-5.1
Ground Contact .................................................................................................................................................32
5-5.2
MOC and TOC Switch Operations ...................................................................................................................32
5-5.3
Operations Counter ...........................................................................................................................................32
5-6
Levering Device ............................................................................................................................... 32
SECTION 6
INSPECTION AND MAINTENANCE
6-1
Introduction ......................................................................................................................................................................34
6-2
Frequency of Inspection .................................................................................................................................................34
6-3
Inspection and Maintenance Procedures .....................................................................................................................35
6-4
Vacuum Interrupter Integrity Test ..................................................................................................................................36
6-5
Contact Erosion and Wipe ..............................................................................................................................................36
6-6
Insulation ..........................................................................................................................................................................37
6-7
Insulation Integrity Check ...............................................................................................................................................37
6-8
Primary Circuit Resistance Check .................................................................................................................................38
6-9
Mechanism Check ...........................................................................................................................................................38
6-9.1
CloSure
TM
Test ..................................................................................................................................................39
6-10 Lubrication .......................................................................................................................................................................43
6-11 Troubleshooting ...............................................................................................................................................................44
SECTION 7
RENEWAL PARTS
7-1
General .............................................................................................................................................................................47
7-1.1
Ordering Instructions ........................................................................................................................................47
TABLES
Table
Title
Page
1.1
Type DHP-VR
™
Vaccum Circuit Breaker Availability and Interchangeability .....................................1
3.1
DHP-VR Weights ............................................................................................................................7
5.1
Typical Opening and Closing Times ........................................................................................................... 27
6.1
Vacuum Interrupter Integrity Test Voltage ................................................................................................. 36
6.4
CloSure
TM
Tool Mounting/Testing Locations by Circuit Breaker Type ............................................. 43
FIGURES
Table
Title
Page
1-1
Outline and Dimensions (inches) Type DHP-VR Breakers (5 kV, 250 MVA Rating) ............................... 2
1-2
Outline and Dimensions (inches) Type DHP-VR Breakers (5 kV, 350 MVA Rating) ............................... 3
1-3
Outline and Dimensions (inches) Type DHP-VR Breakers (7.5 kV and 15 kV Ratings) ......................... 4
3-1
Typical DHP-VR Tools and Accessories ...................................................................................................... 6
3-2
Front External View of DHP-VR Breaker (5 kV, 250 MVA Rating) ........................................................... 8
3-3
Rear External View of DHP-VR Breaker (5 kV, 250 MVA Rating) ............................................................. 9
3-4
Front External View of DHP-VR Breaker (7.5 and 15 kV, 500 and 750 MVA Ratings) .........................10
3-5
Rear External View of DHP-VR Breaker (7.5 and 15 kV, 500 and 750 MVA Ratings) ...........................11