live-linemaintenance-161014210715

PRESENTATION
ON
LIVE-LINE MAINTENANCE
Submitted by:-
NAME - GAURAV KUMAR
PROGRAMME - B.TECH EEE

INDEX
INTRODUCTION
HISTORY
BASIC TERMS USED
a) Barehand Technique
b) Conductive Clothing
c) Grounded
d) Hazard
e) Hotstick Technique
f) Job Supervisor
g) Min Approach Distance
h) Nonconductive Rope
i) Safety
j) Worker
POSITIONING OF WORKERS
WORKERS SWUNG
DIFFERENT WAYS OF LINE MAINTENANCE
GENERAL PRECAUTIONS
REFERENCES

INTRODUCTION
The term live-line maintenance includes maintenance activities using the
hot stick or the bare hand technique.
Fig 1.1:- Hotstick technique Fig 1.2 :- Barehand technique
Live-line maintenance is a procedural activity and does not include
such activities as switching, climbing inspection, conductor stringing.

Maintenance activities performed on energized conductors or
equipment with a phase-to-phase voltage exceeding 600 volts by the
hotstick technique or 69 kV by the barehand technique.
In electrical engineering, live-line working is the maintenance of
electrical equipment, often operating at high voltage, while the
equipment is energized.
Fig 1.3 :- Hotstick method Fig 1.4 :- Barehand method

HISTORY
In 1916, a tool that was known as an “electrical hook” was introduced in
Atlanta. This was essentially a spring-type clamp for tapping energized circuits.
In 1959, live-line tools with fiberglass poles were introduced. The fiberglass
consists of layers of resin coated glass fibers wound around and laid
lengthwise over a plastic foam core. It is highly resistant to moisture
absorption and damage and can maintain 345-kV, 500-kV, and 765-kV
transmission lines.
Fig 1.5 :- Electrical hook