S&C 2020 - User Manual

January 23, 2017
© S&C Electric Company 1993-2017, all rights reserved
Instruction Sheet 716-504
S&C Series 2000 Circuit-Switchers
Outdoor Transmission
Model 2020 — With Vertical Interrupters
and Side-Break Power-Operated Disconnect
69 kV through 138 kV
Installation And Operation
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ..............................2
Read this Instruction Sheet
.......................2
Retain this Instruction Sheet
......................2
Proper Application
..............................2
Usual Operating Conditions
......................2
Special Warranty Provisions
......................3
Warranty Qualifications
..........................3
Safety Information
Understanding Safety-Alert Messages ..............4
Following Safety Instructions
.....................4
Replacement Instructions and Labels
...............4
Location of Safety and Instruction Labels and Tags 5
Safety Precautions .......................... . 7
Shipping and Handling
Inspection ....................................8
Packing
......................................8
Storage
......................................9
Installation
Before Starting ...............................11
Installing the Mounting Pedestals and
High-Speed Base
...........................11
Installing the Operator
.........................14
Installing the Disconnect Pole-Units
...............16
Installing the Interrupters
.......................18
Installation—Continued
Connecting the Operator and Pole-Units to the
High-Speed Power Train
.....................21
Connecting Conductors
........................27
Remove the Interrupter Containers
................27
Setting up the Operator and Checkout
.............28
Adjusting Auxiliary-Switch Contacts
...............33
Operation
Understanding Trip-Free Operation ................34
Electrical Operation
...........................34
Manual Operation
.............................35
Decoupling
..................................36
Understanding the Gas-Pressure Indicator and
Safety Relief Device
.........................37
Understanding the Optional Remote
Gas-Density Monitor
........................37
Inspection Recommendations
...................37

S&C 2020 Specifications

General

Brand	S&C
Model	2020
Category	Switch
Language	English

Summary

Safety Information

Understanding Safety-Alert Messages

Following Safety Instructions

Location of Safety and Instruction Labels and Tags

Shipping and Handling

Component Mixing Warning

Interrupter Pressurization Hazard

Warns that interrupters are pressurized and should not be disassembled.

Installation

Preparation and Base Installation

Operator Installation

Provides steps for physically installing the operator unit.

Pole-Unit Installation

Interrupter Installation

Provides steps for installing the interrupter units into their positions.

Drive Linkage and Control Connections

Guides connecting operator and pole-units via the power train linkage.

Operational Checks and Adjustments

Conductor and Container Removal

Details connecting conductors and removing interrupter containers.

Operator Setup and Final Checkout

Outlines procedures for operator setup, wiring, and final checks.

Final Assembly and Operation Initiation

Covers replacing covers, inserting fuses, and initiating operation.

Adjusting Auxiliary-Switch Contacts

Operation

Understanding Trip-Free Operation

Explains the instantaneous trip-free capability of the stored-energy mechanism.

Electrical Operation

Describes how to operate the circuit-switcher electrically (open/close).

Manual Operation

Manual Opening Procedure

Decoupling and Related Operations

Decoupling Procedure

Recoupling Procedure