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Introduction

Strength

Electrical Power

Electrical Communication

Temperature Rating

Special Cable Problems

Cable Service

Reversing a Line

Attenuation VS Freq
Graph

Electrical Fault
Location

Derivation of Fault
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Cased Hole

TEMPERATURE RATING

The temperature ratings given in the cable catalog are the temperatures at which the cable will perform satisfactorily under normal operating conditions.

1. Temperature gradually increases with depth.

2. The principal load carried by the cable will be the cable weight.

Temperature ratings, are absolute maximums for the insulations used in the cable. Routine operation or operation for extended periods of time at the absolute maximum temperature ratings are not recommended.

Cables can fail at temperatures less than rated due to:

1. Excessive tension

2. Low inner armor coverage.

3. Corrosive materials in the bore-hole in contact with conductor insulation.

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