S&C ELECTRIC COMPANY
Specialists in Electric Power Switching and Protection
Instructions for Installation
S&C Circuit-Switchers—Mark VI
Outdoor Transmission
69 kV through 138 kV
Option “U,” User-Furnished Mounting Structure
Instruction Sheet 712-502
November 14, 2005
©
2005
Supersedes Instruction Sheet 712-502 dated 10-18-04
Section
Page
Section
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INTRODUCTION
Operating Considerations . . . . . . . . . . . . . . . . . . . . . . . . 2
Qualifi ed Persons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Read this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . . 2
Retain this Instruction Sheet . . . . . . . . . . . . . . . . . . . . . 2
Proper Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY INFORMATION
Understanding Safety-Alert Messages . . . . . . . . . . . . . 4
Following Safety Instructions . . . . . . . . . . . . . . . . . . . . 4
Replacement Instructions and Labels . . . . . . . . . . . . . . 4
Location of Safety Labels . . . . . . . . . . . . . . . . . . . . . . . 5
SAFETY PRECAUTIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
INSPECTION AND PACKING
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
INSTALLATION
Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Installing the Disconnect Pole-Units . . . . . . . . . . . . . . 9
Installing the Interrupters . . . . . . . . . . . . . . . . . . . . . . 10
Checking Operation of Disconnect . . . . . . . . . . . . . . . 15
Installing the Drive Train, Gearbox, and Interphase
Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installing the Mark VI CS-1A Switch Operator and
Vertical Shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installing the Interrupter Charging Motors . . . . . . . . 23
Installing the User-Furnished Conduit . . . . . . . . . . . . 25
Wiring the Interrupters and Charging Motors . . . . . . 26
WIRING AND ADJUSTING THE SWITCH OPERATOR
Before Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Connecting Control Power and User-Furnished
Control Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using the Manual Operating Handle . . . . . . . . . . . . . . 31
Using the Decoupling Selector Handle . . . . . . . . . . . . 32
Adjusting the Switch Operator . . . . . . . . . . . . . . . . . . 34
INSTALLING TERMINAL PADS AND CONDUCTOR
Installing the Terminal Pad . . . . . . . . . . . . . . . . . . . . . 47
CIRCUIT-SWITCHER START-UP AND CHECKOUT
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
INDICATORS
Understanding the Interrupter Indicators . . . . . . . . . 53
Understanding the Gas-Pressure Gauge . . . . . . . . . . . 54
Understanding the Optional Remote Gas-Density
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
TABLE OF CONTENTS
