Eaton VCP-W Series User Manual

3
Instruction Booklet IB131006EN
Effective March 2019
Instructions for installation,
operation, and maintenance of type
VCP-W vacuum circuit breakers
EATON www.eaton.com
Contents
Description Page
1. Introduction ....................................................................... 6
1.1 Preliminary comments and safety pre-cautions ......................................... 6
1.1.1 Warranty and liability information .................................................6
1.1.2 Safety precautions ............................................................ 6
1.2 General information ..............................................................6
1.3 Type VCP-W vacuum circuit breaker element ratings (Tables 1, 2, 3, 4, 5, and 6) ...............7
1.4 Outlines and dimensions ......................................................... 11
2. Safe practices .................................................................... 13
2.1 Recommendations .............................................................. 13
3. Receiving, handling, and storage ..................................................... 13
3.1 General ....................................................................... 13
3.2 Receiving ..................................................................... 13
3.3 Handling ...................................................................... 13
3.4 Storage ....................................................................... 13
3.5 Tools and accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.6 Type VCP-W vacuum circuit breaker element weights (Tables 18, 19, and 20). ................ 21
4. Initial inspection and installation ...................................................... 28
4.1 Introduction ................................................................... 28
4.2 Manual operation check .......................................................... 28
4.3 Vacuum interrupter integrity ....................................................... 28
4.4 Insulation ..................................................................... 28
4.5 Contact erosion and wipe ........................................................ 28
4.6 Primary circuit resistance ......................................................... 28
4.7 Nameplate .................................................................... 28
4.8 Electrical operation check ........................................................ 28
4.8.1 Circuit breaker insertion and removal ............................................ 28
4.8.2 Circuit breaker performance check .............................................. 33
4.9 Circuit breaker/structure interfacing ................................................. 34
4.9.1 Interface interlocks/interfacing check ............................................ 34
5. Description and operation ........................................................... 36
5.1 Introduction ................................................................... 36
5.2 Interrupter assembly ............................................................ 36
5.2.1 Vacuum interrupter ..........................................................37
5.2.2 Contact erosion indication ..................................................... 37
5.2.3 Loading spring indicator .......................................................37
5.2.4 Contact wipe and stroke ...................................................... 37
5.2.5 Phase barriers .............................................................. 37
5.3 Stored energy mechanism ........................................................ 38
5.3.1 Operation of stored energy mechanism .......................................... 38
5.3.2 Charging .................................................................. 41
5.3.3 Closing operation ............................................................ 41
5.3.4 Tripping operation ............................................................ 41
5.3.5 Trip free operation ........................................................... 41
5.4 Control schemes ............................................................... 41
5.4.1 Timing .................................................................... 45
5.4.2 Secondary disconnects ....................................................... 45
5.4.3 Shunt trip device ............................................................45
5.4.4 Under-voltage trip device ...................................................... 45
5.5 Interlocks and interfacing ......................................................... 47
5.6 Levering mechanism ............................................................ 47
5.7 Operations counter ............................................................. 47
5.8 Ground contact ................................................................ 47
5.9 MOC and TOC switch operations .................................................. 47

Eaton VCP-W Series Specifications

General

Brand	Eaton
Model	VCP-W Series
Category	Circuit breakers
Language	English