Eaton W-SLC-7.2 User Manual

Instructions for the Installation,
Operation and Maintenance
of W-SLC-7.2
Technical Data TD534-0501002U
Effective January 2013
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Contents
Description
Page
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Order instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard conformance . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specification and technical data . . . . . . . . . . . . . . . . . . . . . .
Product structure and working principles . . . . . . . . . . . . . . .
Main device structure . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse interlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cradle interlocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic wiring diagram . . . . . . . . . . . . . . . . . . . . . . . .
Mounting, commissioning and operating . . . . . . . . . . . . . . .
Receiving, handling and storage . . . . . . . . . . . . . . . . . . . .
Commissioning and operating . . . . . . . . . . . . . . . . . . . . .
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection of vacuum interrupter . . . . . . . . . . . . . . . . . . .
Inspection of contact’s wear-out . . . . . . . . . . . . . . . . . . .
Inspection of mechanisms . . . . . . . . . . . . . . . . . . . . . . . .
Usage of fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement of fuses . . . . . . . . . . . . . . . . . . . . . . . . . . .
Supplied documents and accessories . . . . . . . . . . . . . . . . .
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Eaton W-SLC-7.2 Specifications

General

Type	Surge protective device
Voltage Rating	480V
Application	General Purpose
Standard	UL 1449 4th Edition
Housing Material	Metal

Summary

Overview and Specifications

Introduction

Description of the W-SLC contactor fuse combination withdrawable truck.

Order instruction

Guidance on how to order the W-SLC unit with various options.

Standard conformance

List of IEC standards the W-SLC complies with.

Ambient conditions

Specifies the environmental conditions for operation and storage.

Specifications and technical data

Detailed technical specifications and data for the W-SLC unit.

Product Structure and Operation

Basic device structure

Describes the physical arrangement of the truck assembly and its components.

Operation principle

Explains how the W-SLC vacuum interrupters and mechanisms function.

Cradle interlocking

Details the interlocking mechanisms related to the cradle position and door.

Fuse interlocking

Explains the interlocking mechanism for fuse blown or missing indication.

Dimensions and Diagrams

Dimensions

Provides graphical representation of the W-SLC unit's physical dimensions.

Schematic wiring diagram

Presents the electrical wiring diagrams for the W-SLC unit.

Mounting, Commissioning, and Operation

Receiving, handling and storage

Procedures for safely receiving, handling, and storing the W-SLC unit.

Commissioning and operating

Steps for initial checks, fuse inspection, and pre-operation before energization.

Maintenance and Troubleshooting

Maintenance

General guidelines and frequency for maintenance activities.

Inspection of vacuum interrupter

Visual check of the vacuum interrupter's external surface for cleanliness.

Inspection of contact's wear-out

Checking for wear on vacuum contactors and recommendations for replacement.

Inspection of mechanisms

Checking for loose parts, wear, and lubrication status of mechanisms.

Usage of fuses

Instructions on checking fuse appearance, installation, and interlocking functions.

Replacement of fuses

Procedure for replacing fuses, including safety precautions and tools.

Troubleshooting

Lists common phenomena, their causes, and potential solutions.

Ancillary Information

Supplied documents and accessories

Lists the documents and accessories supplied with the W-SLC unit.

Ordering information

Provides details on how to order the W-SLC unit and related items.

Safety precautions

Important safety instructions for handling, maintenance, and operation.