Poletop Equipment and Replacement 1

Summary

This 56-minute DVD explains safe procedures for the replacement of cutouts, switches, sectionalizers, and reclosers. Routine maintenance of poletop switches is also described and demonstrated. Also covers how to re-fuse a cutout. Shows how to check the contacts and general operation of an overhead switch, and replace the switch if necessary. Covers how to identify problems in sectionalizers and reclosers, and how to replace them if necessary.

Training Sessions

Introduction – 11 minutes Describes how fused cutouts, reclosers, and sectionalizers are used to provide coordinated protection for a distribution system. Describes two examples of coordinated system protection.

Cutouts – 10 minutes Describes how to replace a fuse in a fused cutout. Shows how to safely replace a fused cutout.

Reclosers – 9 minutes Describes ways that reclosers can be classified. Describes the operating cycles and operation of two types of recloser control mechanisms.

Recloser Replacement – 9 minutes Describes the tasks involved in safely replacing a recloser. Demonstrates one method of safely de-energizing, rigging, and replacing a three-phase electronic recloser.
Gang-Operated Switch Maintenance – 10 minutes Describes the basic operation of one type of gang-operated switch. Identifies problems typically associated with gang-operated switches. Demonstrates how to safely inspect and troubleshoot a gang-operated switch.
Gang-Operated Switch Replacement – 7 minutes Demonstrates a procedure for safely replacing a gang-operated switch.

Support Materials Available

Student workbook, instructor guide.