S&C Vista SD User Manual

February 13, 2017
© S&C Electric Company 2014-2017, all rights reserved
Instruction Sheet 695-510
S&C Vista
®
SD Underground Distribution Switchgear
Outdoor Distribution (17.5 kV and 29 kV)
With Visi-Gap
®
Load
Interrupter Switches and
Visi-Gap
®
Fault Interrupters
Operation
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ..............................2
Read this Instruction Sheet .......................2
Retain this Instruction Sheet ......................2
Proper Application ..............................3
Warranty .....................................3
Warranty Qualifications ..........................3
Safety Information
Understanding Safety-Alert Messages ..............4
Following Safety Instructions .....................4
Replacement Instructions and Labels ...............4
Location of Safety Labels and Tags
Single-Way Vault-Mounted Style ................5
Multi-Way Vault-Mounted Style .................6
Pad-Mounted Style. . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safety Precautions .............................8
Components ..................................9
Operation
Manually Opening or Closing Visi-Gap Load-Interrupter
Switches and Visi-Gap Fault Interrupters
Vault-Mounted Style ......................... 11
Pad-Mounted Style. . . . . . . . . . . . . . . . . . . . . . . . . . 12
Closing the Doors and the Hinged Roof ............14
Resetting Visi-Gap Fault Interrupters (All Styles) .....15
Locking in Open or Closed Position ...............17
Checking for Voltage Using the Optional Potential
Indication Feature ..........................18
Low-Voltage Phasing Using the Optional Voltage-
Indication Feature ..........................19
Maintenance
Components .................................21
Inspecting Cable Terminations ...................21
Pad-Mounted Enclosure Finish ...................22
Replacing the Enclosure Latch Shear Pin ..........23
Closing and Securing the Enclosure If Replacement
Shear Pin is Unavailable .....................24
Appendix A
Routine Switchgear Testing. . . . . . . . . . . . . . . . . . . . . . 25
Dc Cable Testing and Fault Locating. . . . . . . . . . . . . . . 25
Very Low Frequency (VLF) Cable Testing ...........26
Fault-Interrupter Testing ........................27
Appendix B
Vista SD Underground Distribution
Switchgear Ratings .........................28
Ratings for S&C Visi-Gap Load-
Interrupter Switches .........................28
Ratings for S&C Visi-Gap Fault Interrupters .........28
Appendix C
Switchgear Styles .............................29
Appendix D
Optional Features .............................30
Appendix E
Accessories .................................33
Appendix F
Replacement Parts ............................33
USB Cable Kit ................................33
Appendix G
Touch-Up Kit Components ......................34
Appendix H
Auxiliary Contacts Receptacle Connector ...........34

S&C Vista SD Specifications

General

Brand	S&C
Model	Vista SD
Category	Switch
Language	English

Summary

Introduction

Qualified Persons

Defines requirements for personnel qualified to install, operate, and maintain switchgear.

Instruction Sheet Guidance

Emphasizes the importance of reading and keeping the instruction sheet for reference.

Proper Application and Warranty

Details correct application of equipment and warranty terms and conditions.

Safety Information

Understanding Safety Alert Messages

Explains signal words like DANGER, WARNING, CAUTION, and NOTICE used in the manual.

Safety Label Locations

Illustrates the placement of critical safety labels on the switchgear units.

Safety Precautions

General Electrical Safety Procedures

Lists 12 essential safety precautions for operating high-voltage switchgear.

Components

Switchgear Component Descriptions

Describes the features and types of load-interrupter switches and fault interrupters.

Visual Component Identification

Provides diagrams identifying key components of vault-mounted and pad-mounted switchgear.

Operation

Manual Operation of Switches and Interrupters

Details the procedure for manually opening and closing switches and fault interrupters.

Pad-Mounted Enclosure Access

Step-by-step guide for opening doors and the hinged roof of pad-mounted units.

Closing Doors and Hinged Roof

Procedure for correctly closing and securing the enclosure doors and hinged roof.

Resetting Fault Interrupters

Procedure for resetting Visi-Gap fault interrupters after a fault.

Locking Switches in Position

Instructions for padlocking load-interrupter switches or fault interrupters.

Checking Voltage with Potential Indicator

How to test for voltage presence using the optional potential indication feature.

Low-Voltage Phasing Procedure

Steps for performing low-voltage phasing using the voltage indication feature.

Maintenance

Inspecting Cable Terminations

Procedure for visual inspection and temperature measurement of cable terminations.

Pad-Mounted Enclosure Finish Care

Guidelines for touch-up and cleaning of the enclosure finish.

Replacing Enclosure Latch Shear Pin

Detailed steps for replacing a broken shear pin in the enclosure latch mechanism.

Securing Enclosure Without Shear Pin

Procedure to secure the enclosure if a replacement shear pin is unavailable.

Appendix A

Routine Switchgear Testing

Information on performing routine insulation and withstand tests on switchgear.

DC Cable Testing and Fault Locating

Guidance on DC testing methods for cables and locating faults.

VLF Cable Testing

Details on performing Very Low Frequency (VLF) testing on cable systems.

Fault-Interrupter Testing

Guidelines for dielectric testing of fault interrupters.

Appendix B

Switchgear and Component Ratings

Presents electrical ratings for Vista SD switchgear, load-interrupter switches, and fault interrupters.

Appendix C

Switchgear Styles and Models

Table detailing available switchgear styles and their corresponding catalog number suffixes and models.

Appendix D

Optional Features and Configuration

Lists optional features that can be added to switchgear assemblies and their catalog number suffixes.

Appendix E

Accessories and Kits

Catalog numbers for accessories such as shotgun clamp sticks and remote control pendants.

Appendix F

Replacement Parts Information

Lists catalog numbers for replacement parts like bushing adapters and tools.

Appendix G

Touch-Up Kit Components

Catalog numbers for touch-up paint colors and primers for enclosure finish.

Appendix H

Auxiliary Contacts Connector Pinout

Diagram and function list for the auxiliary contacts receptacle connector pins.