Apprentice Event – OH Transformer Arrestor Changeout
Drop Dead Time: 15:00
Event Summary:
This event is simulated energized and consists of changing out a 10 kV lightning arrestor assembly on a conventional overhead transformer mounted on a 40’ A1.1 (A1) pole. A fused-cutout will be the primary overcurrent protection for the transformer.
Event Rules:
- Each apprentice will have 5 minutes to set up & ask the event judge questions.
- Time will start on the judge’s signal.
- Rubber gloves shall be worn ground to ground.
- An extendo stick will be available to de-energize the transformer, remove the fuse barrel, and bring the fuse barrel to the ground prior to climbing the pole. Dropping the fuse barrel will result in a 2-point deduction.
- A handline and grunt bag will be provided for this event and shall be used to lift/lower the lightning arrestor(s). Any material stored on the climbers belt will result in a 2-point deduction.
- A new 10 kV lightning arrestor assembly will be provided and shall be installed on the transformer. The lightning arrestors copper grounding strap shall be placed under the top mounting bolt of the lightning arrestor bracket.
- Time stops when the lightning arrestor has been replaced and the apprentice calls “TIME”.
- The fuse barrel shall be closed prior to the apprentice leaving the event site.
- Judging will continue until the event site is restored to its original condition and the apprentice has left the event site. Points can be deducted after time stops.
- All general rules apply.
