S&C Vista User Manual

Remote Supervisory Vista
®
Underground
Distribution Switchgear
Outdoor Distribution (15.5 kV through 38 kV)
Pad-Mounted, Dry-Vault-Mounted, Wet-
Vault-Mounted, and Undercover™ Styles
September 25, 2023
© S&C Electric Company 1999-2023, all rights reserved
Instruction Sheet 682-510
Operation
This green leaf icon designates information specically for Vista Green Underground Distribution Switchgear
that uses an eco-friendly insulating gas. Unless otherwise designated, instructions provided apply to all manual
Vista switchgear products.
Table of Contents
Introduction � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 2
Qualified Persons � � � � � � � � � � � � � � � � � � � � � � � � � � � �2
Read this Instruction Sheet � � � � � � � � � � � � � � � � � � � �2
Retain this Instruction Sheet� � � � � � � � � � � � � � � � � � � �2
Proper Application � � � � � � � � � � � � � � � � � � � � � � � � � � �2
Warranty � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �3
Safety Information � � � � � � � � � � � � � � � � � � � � � � � � 4
Understanding Safety-Alert Messages � � � � � � � � � � � �4
Following Safety Instructions � � � � � � � � � � � � � � � � � � �4
Replacement Instructions andLabels � � � � � � � � � � � �4
Location of Safety Labels � � � � � � � � � � � � � � � � � � � � � �5
Safety Precautions � � � � � � � � � � � � � � � � � � � � � � � 6
Components � � � � � � � � � � � � � � � � � � � � � � � � � � � � 7
Overview of Components � � � � � � � � � � � � � � � � � � � � � �7
Operation � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
Manually Opening, Closing, or
Grounding a Way � � � � � � � � � � � � � � � � � � � � � � � � �12
Locking Out Grounded Position � � � � � � � � � � � � � � � �16
Locking In Closed, Open, or Grounded Position � � �17
Electrically Opening, Closing, or Grounding aWay �18
Motor Operator Decoupling � � � � � � � � � � � � � � � � � � �22
Checking for Voltage Using Optional VOLTAGE
Indicator � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �24
Low-Voltage Phasing Using Optional VOLTAGE
Indicator with Phasing � � � � � � � � � � � � � � � � � � � � �27
Maintenance � � � � � � � � � � � � � � � � � � � � � � � � � � � � 29
Components � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 29
Returning Equipment to Service � � � � � � � � � � � � � � � 30
Enclosure Finish � � � � � � � � � � � � � � � � � � � � � � � � � � � �31
Maintenance Recommendations in Extremely
Corrosive Environments � � � � � � � � � � � � � � � � � � � �31
Dielectric Testing� � � � � � � � � � � � � � � � � � � � � � � � 32
Routine Switchgear Testing � � � � � � � � � � � � � � � � � � 32
Cable Testing and Fault Locating � � � � � � � � � � � � � � 33
Fault-Interrupter Testing � � � � � � � � � � � � � � � � � � � � � 34
Resistance Measurement � � � � � � � � � � � � � � � � � � � � 35

S&C Vista Specifications

General

Brand	S&C
Model	Vista
Category	Industrial Equipment
Language	English

Summary

Safety Information

Understanding Safety-Alert Signals

Explains the meaning of DANGER, WARNING, CAUTION, and NOTICE safety signals.

Safety Precautions

Personnel Safety and Access Control

Equipment Safety and Security

Electrical Hazard Management

Details precautions for energized components, backfeed, voltage testing, and clearances.

Operation

Manual Switch Operation Procedures

Provides step-by-step instructions for manual operation of switchgear.

Manual Lockout Procedures

Electrical Switch Operation

Outlines the procedure for electrically operating the switchgear.

Motor Operator Decoupling Steps

Voltage Checking Procedure

Details how to check for voltage using the optional voltage indicator.

Low-Voltage Phasing Procedure

Dielectric Testing

Routine Switchgear Withstand Testing

Lists maximum insulation test voltages for switchgear.

Cable Testing and Fault Location

Describes procedures for testing cables and locating faults using DC methods.

Fault-Interrupter Testing Protocols

Resistance Measurement Techniques

Explains how to measure resistance for evaluating contact quality.