Example of the use of Barry dielectric ropes known to date.
When it comes to electrical maintenance and working with energized lines, putting safety and reliability first is crucial.
Barry's DEW Line series presents cutting-edge dielectric ropes and nets, designed to ensure maximum safety and effectiveness in high-voltage settings.
Example of the use of Barry dielectric ropes known to date.
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Use for Production, Transmission and Distribution
- Construction, maintenance, and repairs
- Stringing and Pulling
- Personnel Evacuation, Rescue and Rope Access
- Helicopter lift, transport, and Human External Cargo (HEC) operations
Perform a variety of Tasks:
Compatible with standard equipment
MH replacing polymer insulator with glass insulator on a 138kV line and avoided 60 days of outage by using liveline method. The DEW rope replaced conventional method of using FRP strain poles to support the conductor during the switch out. Crew found that using rope over 561 uses of rope, rope had no sign of wear and tear.
Stringing and pulling in high-voltage areas
Insulated bare-hand work
Personnel Evacuation, Rescue and Rope Access
Rope Access
Helicopter transport and HEC operations
Safety barriers or guard structures
Enhanced utility line work safety
BENCHMARK FOR PRE-USE ELECTRICAL TESTING USING PORTABLE TESTERS
The Barry D.E.W. insulating ropes are unique and can be cleaned and maintained and handled as hot sticks.
We have found that they may also be tested as hot sticks using some portable hot stick testers such as those offered by A.B. Chance and by Hastings.
Example of Benchmarking :
Rope: NF3400, ½ diameter D.E.W. insulating rescue rope (new rope stored in warm dry environment)
Test equipment: A.B. Chance Wet/Dry Hot Stick Tester (C 403-3178) on the Dry setting.
Conditioning: Dry rope (note: never spray or immerse rope prior to field use).
Test the entire rope section on all faces and document the values obtained.
As an example, only :
a value of 0 to 5 (µA) is a perfect score for new rope which is stored in warm/dry environment.
Ropes in service should be tested prior to use and the values obtained should be in the range
of 0 to 5 (µA).
If a higher value is obtained (5 (µA)+) then the rope should be considered suspicious and further investigation is required. This rope should not be used as it may have been exposed to a contaminant or water. It may need to be reconditioned in a heated dry room before being put in service again.
Contact Barry for advice.
Further Reading : Comparative Electrical Testing of Portable Hot Stick Testers