I.B. 32-255-1GPage ivEffective 12/02TABLE OF CONTENTSPAGESECTION 1 INTRODUCTION1-1 Preliminary Comments and Safety Precautions..................................................................................................11-1.1 Warranty and Liability Information ..........................................................................................................11-1.2 Safety Precautions .................................................................................................................................11-2 General Information.............................................................................................................................................11-3 Type VCP-W Vacuum Circuit Breaker Element Ratings (Tables 1.1, 1.2, 1.3 and 1.4)......................................31-4 Outlines and Dimensions ....................................................................................................................................5SECTION 2 SAFE PRACTICES2-1 Recommendations ..............................................................................................................................................7SECTION 3 RECEIVING, HANDLING AND STORAGE3-1 General ...............................................................................................................................................................83-2 Receiving.............................................................................................................................................................83-3 Handling ..............................................................................................................................................................83-4 Storage ...............................................................................................................................................................83-5 Tools and Accessories ........................................................................................................................................93-6 Type VCP-W Vacuum Circuit Breaker Element Weights (Tables 3.1 and 3.2) ...................................................9SECTION 4 INITIAL INSPECTION AND INSTALLATION4-1 Introduction........................................................................................................................................................164-2 Manual Operation Check...................................................................................................................................164-3 Vacuum Interrupter Integrity..............................................................................................................................164-4 Insulation ...........................................................................................................................................................164-5 Contact Erosion and Wipe.................................................................................................................................164-6 Primary Circuit Resistance ................................................................................................................................164-7 Nameplate .........................................................................................................................................................164-8 Electrical Operation Check................................................................................................................................174-8.1 Circuit Breaker Insertion and Removal.................................................................................................174-8.2 Operation Check Performance .............................................................................................................194-9 Circuit Breaker/Structure Interfacing .................................................................................................................204-9.1 Interface Interlocks/Interfacing Check ..................................................................................................20SECTION 5 DESCRIPTION AND OPERATION5-1 Introduction........................................................................................................................................................225-2 Interrupter Assembly .........................................................................................................................................225-2.1 Vacuum Interrupter...............................................................................................................................225-2.2 Contact Erosion Indication ...................................................................................................................235-2.3 “T” Cutout Loading Spring Indicator .....................................................................................................235-2.4 Contact Wipe and Stroke .....................................................................................................................235-2.5 Phase Barriers......................................................................................................................................23