TRAINING COURSE:
Pole Top Transformer Replacement
Course Category: Transmission and Distribution
Course description: The purpose of this course is to teach the basic procedures used to safely remove and install pole top transformers. Although specific types of transformers are used as examples, emphasis is placed on general procedures that apply to the majority of pole top transformers. At the conclusion of this course, participants should understand the basic procedures for replacing pole top transformers safely and efficiently. Their understanding should include how to use a boom or blocks and a truck-mounted winch to install or remove a transformer and the basic techniques used to connect and disconnect pole top transformers. They should also be familiar with some methods commonly used to replace a transformer without interrupting customer service, and they should know how to use the appropriate safety equipment for transformer replacement procedures.
Course syllabus:
- Removal
- Select, inspect, and properly use appropriate safety equipment
- Safely de-energize and disconnect a single-phase pole top distribution transformer when service is to be interrupted
- Dismount and remove a single-phase pole top distribution transformer using blocks and a truck-mounted winch
- Using blocks and a truck-mounted winch, install a single-phase pole top distribution transformer with direct pole mounts
- Safely connect a single-phase pole top distribution transformer with the secondary bus de-energized
- Safely energize a newly installed pole top transformer
- Properly test a newly installed pole top transformer
- Phasing and Tying: Removal
- Temporarily tie in a secondary distribution bus with a nearby pole top transformer to maintain customer service during transformer replacement
- Safely de-energize and disconnect a completely self-protected pole top distribution transformer when customer service is not to be interrupted
- Phasing and Tying: Installation
- Using a boom crane for lift, safely rig, dismount, and mount a single-phase pole top transformer
- Safely connect and phase in a pole top distribution transformer to an energized three-wire single-phase secondary bus
- Three-Phase Banks: Removal
- Safely de-energize and disconnect one transformer in a three-phase back without interrupting customer service
- Remove a cluster mounted pole top transformer
- Three-Phase Banks: Installation
- Install a single-phase pole top distribution transformer in a cluster-mounted application
- Safely connect, energize, and test a transformer in a three-phase back while the secondary bus is energized
*This course is discounted for NATE members.
