The High Voltage Underground Cable Technician Inspector Training Randy Larson Apprenticeship Lineworker Instructor Chippewa Valley Technical College

Why an Inspection Program? Lack of a Hazard Recognition Program CO-Feb00.ppt 12/30/2018 9:05:05 AM Why an Inspection Program? Lack of a Hazard Recognition Program Increased maintenance costs System down time Poor public relations Expensive insurance claims and lawsuits Lack of Hazard Recognition Program: Increase maintenance costs System down time Poor public relations Expensive insurance claims and lawsuits FXF presentation

How can I as an employee help control costs and save lives? CO-Feb00.ppt 12/30/2018 9:05:05 AM How can I as an employee help control costs and save lives? Recognize, Report or Repair Hazards How can we as employees help control costs and save lives? By recognizing and reporting hazards that may exist on your system you can help control costs and save lives. FXF presentation

A Uncoated, Compact Stranded Aluminum Conductor B Strand Screen-Extruded Semiconducting EPR C - Insulation- EPR, ethylene-propylene rubber (EPR) based. Okoguard insulation, with the distinctive red color and a totally integrated EPR system, D – Semi-con The PVC jacket supplied with this cable is mechanically rugged and has excellent resistance to oil, acids and most chemicals. Concentric conductor Jacket

Safety Rules for Underground Systems

Safety Manual

Safety Manual

Safety Manual

Safety Manual

Basic Underground Installations and Equipment

Basic Feed Through Padmount Transformer

Inside of a Padmount

What is a Basement?

What is a Basement?

Single Phase Junction Box

Three phase Junction Box

Fiberglass Junction Box

Fiberglass Junction Box

Fiberglass Junction Box

Fiberglass Junction Box

Tagging

Cable Identification NESC 341 B3a, Identification 1. Cables shall be permanently identified by tags or otherwise at each manhole or other access opening of a conduit system. 2. All identification shall be of a corrosion resistant material for the environment. 3. All identification shall be of quality and located so as to be readable with auxiliary lighting.

Tagging

Single Phase Transformer – Feed Through

Three Phase Transformer – Feed Through

Three Phase Transformer – Feed Through, Primary Side

Three Phase Transformer – Feed Through,Transformer Information

Three Phase Transformer

Three Phase Transformer – Lock for Primary Side

Three Phase Transformer- Secondary Side

Three Phase Transformer- Secondary Side Bushing Identification

Three Phase Transformer - Nameplate

Three Phase Riser Pole

Three Phase Riser Pole – Close up

Primary Terminator – “Cold Shrink” Installation

Primary Terminator – “Heat Shrink” Installation

Live-Front Padmount Transformer

Live-Front Padmount Transformer

Live-Front Padmount Transformer Nameplate

Three Phase Trans-closure or “doghouse”

Padmounted Switchgear

Padmounted Switchgear

Switchgear Nameplate Information

Padmounted Switchgear Locked cover protecting switch and a handle

Operating Switch Handle Hasp for locking cover closed

Operating Switch Handle To close

Padmounted Switchgear Compartment Two Compartment One

Padmounted Switchgear – One Side of Cabinet

Fiberglass panel shields Compartment 2

Padmounted Switchgear – Other Side Compartment 4 Compartment 2 Compartment 3

Padmount Switchgear

Switch gear blades – Open

Switchgear Blades – Closed Switch blades

Padmount Switchgear

Internal Equipment and Hardware

200 Amp Loadbreak Elbow with Testpoint

200 Amp Loadbreak Elbow With Testpoint

Elbow Swelling

200 Amp Loadbreak Elbow Without Testpoint

Cut-away View of an Elbow

Cut-away View of an Elbow

MOV Elbow Arrestor

Porcelain Silicon Carbide Lightening Arrestor

Porcelain Silicon Carbide Lightening Arrestor

Fault Indicator – Three Phase

Fault Indicators This clip opens, cable is placed in between current transformer (white box) and gray assembly.

Fault Indicators Red flag shows after a high current is detected on UD cable. To reset – re-energize cable at normal operating voltage and current

Module Elbow Arrestor

Module Elbow Arrestor

Portable Two-Way This red covers are called “Dust Caps” Not to be on the module while the module is energized!

Dummy Cap The Drain wire – “dissipates” the static build up on the cap. The “cable” (drain wire) is to be attached to ground. A dummy cap protects dirt and foreign objects from getting in or on the module.

Dummy Cap The probe is just a conductor with no fiberglass arc snuffer on the end.

OSHA Requirements Minimum Approach Distance MAD

OSHA Requirements Minimum Approach Distance MAD Put on and take off rubber insulating gloves in a position where the worker cannot reach into MAD. OSHA Requirements Minimum Approach Distance MAD

Approach Distance For work near live parts of more than 600 volts but less than 72.5 kV, work from a position where the worker cannot reach into MAD, except: - wearing rubber insulating gloves, - protected by insulating equipment, - using live-line tools, and - performing live-line barehand work. §§1910.269(l)(5)(ii) & 1926.960(d)(2)

Electric Arc Protection Assess workplace for hazards from flames or electric arcs If there is exposure, estimate incident energy Prohibit clothing when incident energy could ignite clothing Require FR under certain conditions Select clothing with an arc rating greater than the estimated incident energy §1910.269(l)(8) & §1926.960(g)

Electric Arc Protection Requires FR clothing for incident energy exceeding 2.0 cal/cm2 Protection for head and face Starts at 9 cal/cm2 for single-phase arcs in air Starts at 5 cal/cm2 for other exposures Protection for hands (rubber gloves with protectors or, for exposures ≤ 14 cal/cm2, heavy-duty (12-oz) leather work gloves) Protection for feet (heavy work shoes or boots) §1910.269(l)(8) & §1926.960(g)