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PAPER #76
DEVELOPMENT OF NEW TOOLSFor live line working
Temporary Conductor Support for rigid insulator.
Temporary Conductor Support for suspensions.
Double insulated jumper hanger.
seguridad eléctrica
Co Authors: Ing. Julio Callejo.
Independent LLV Consultor & Trainner
J.M.Gutierrez 1441
Paraná, Entre Rios, Argentina
Author: Ing. Mariano Terzi
CEO, TYRCO S.A.
Diego Palma 3340 of 309, (1621)
Benavidez, Buenos Aires, Argentina
[email protected] / www.tyrco.com.ar
DEVELOPMENT OF NEW TOOLS
Paper #76
DEVELOPMENT OF NEW TOOLS
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
PURPOSE
USER
MANUFACTURER
Improve and simplify the work
Increasing the safety
Reducing costs & time.
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
USER - ENERSAThe company ENERSA, is a leading utility company in the Argentinean electrical market• 350.000 customers • 56.300 km2 • 1200 Km of High Voltage Lines (132 kV.)• 14.000 km of medium Voltage Lines (33 kV./13,2 kV.)• 9.000 km of low Voltage Lines (380 V./220 V.)• 20 High Voltage substations, 945 MVA • 84 Medium Voltage substations, 254 MVA • 12.000 Low Voltage substations, 927 MVA
Argentinean company, with over 25 years experience in the electrical marketThe company is dedicated to the manufacturing and selling a wide range of products for low, medium and high voltage, Product line:
• Hot sticks.• Temporary grounding equipment.• Voltage detectors, Instruments.• Live line working tools.• Custom design tools.
MANUFACTURER – TYRCO SA.
seguridad eléctrica
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
We intend to show the development of new live line working tools, that we were forced to develop, when moving on live line working (LLW) from 13.2 kV. to 33 kV. systems.Some problems and security issues where found when moving to a higher voltage level, such as:
• The equipment available in the company was for distribution systems of 13.2 kV instead of 33 kV., exceptfor the insulated trucks,
• Increase of the safety level. Some crews were using tools originally designed for 13.2 kV., on 33 kVsystems,
• Customs tools, some crew developed his own custom tools.
• The economic factor, the company didn´t have enough budget for the acquisition of new tools.
• Aerial insulated bucket trucks, available in the company, didn´t have the auxiliary arm.
1. Temporary Conductor Support for Pin type insulators.
2. Temporary Conductor Support for suspensions.
3. Double insulated jumper hanger
Three tools were developed with the assistance and engineering of TYRCO
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
1. Temporary Conductor Support for Pin type insulators.
Problems The conductors cannot be hold to make the change of the insulators, because the insulated trucks did not have any auxiliary arm “plumin” that would allow them to the support the conductors while working.
Auxiliaryarm
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
1. Temporary Conductor Support for Pin type insulators.
Designs considerations
1. The insulation level, 33 kV.
2. Type of cross arms, solid/hollow,
concrete or Wood.
3. Dimension of the numerous cross-arms
that should be adapted to, different sizes
and cross section sizes.
4. Mechanical forces involved.
Final ToolCustom tool
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
1. Temporary Conductor Support for Pin type insulators.
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Specifications
For cross-arms up to200 x 150 mm.
Maximum working load550 kg.
Maximum operating voltage36 kV.
Trapezoidal thread with pivoting head to fit any angle of cross-arm
(trapezoidal or straight)
FRP foam filled tube, according to IEC-60855.
Diameter: 64 mm.
Cable clampMax. Cable diameter: 25 mm.
Material: Aluminum Alloy and BronzeWith safety lock to avoid losing the
conductor
1. Temporary Conductor Support for Pin type insulators.
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Problems The conductors cannot be hold to make the change of the insulators, because the insulated trucks did not have any auxiliary arm “plumin” that would allow them to the support the conductors while working.
Auxiliaryarm
2. Temporary Conductor Support for suspensions
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
2. Temporary Conductor Support for suspensions
Designs considerations
1. The insulation level, 33 kV.
2. Type of cross arms.
3. Dimension of the numerous cross-
arms that should be adapted to,
different sizes and cross section
sizes.
4. Mechanical forces involved.
Custom tool Final Tool
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
2. Temporary Conductor Support for suspensions
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Especifications
Maximum operating voltage36 kV.
FRP foam filled tube, according to IEC-60855,
Diameter: 64 mm.Length: 1,50 m.
2. Temporary Conductor Support for suspensions
Maximum working load 550 kgm. / 700 kg. in each sideFor cross-arms up to
240 x 200 mm.
Pole clamp Diameter: 64 mm.
Material: Aluminum alloy, Allows rotation and
movement to fit any angle
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Problems & considerationsThis tool was developed based on the standard insulator hanger When using the hanger, the linesman asks for the possibility to add another clamp at the end to hold the conductors or jumper cables giving the tool a wide range of application, adding safety and simplifying the tasks.
3. Double Insulated Jumper Hanger
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Designs considerations
1. The insulation level, 33 kV.
2. Possibility to hold jumper cable.
3. Mechanical forces involved.
Original Tool Final Tool
3. Double Insulated Jumper Hanger
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
3. Double Insulated Jumper Hanger
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
Especifications
Maximum operating voltage36 kV.
FRP foam filled tube, according to IEC-60855, tested at 100 kV. / 300
mm.Diameter: 39 mm.Maximum bending moment: 150 kgm
Cable clampMax. Cable diameter: 30 mm.
Material: Aluminum
3. Double Insulated Jumper Hanger
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica
The purpose of this paper was to demonstrate how working together the users and the manufacturer, it
is possible to:
✓ Improve and simplify the work,
✓ Increasing safety
✓ Reducing time.
Usually we see in the crews some homemade tools that are useful at work but as a recommendation for
users who develop their own tools, we suggest always to consult with a manufacturer, who is the most
suitable to design and build this type of tools.
ACKNOWLEDGMENT
We wish to thank to the working group of LLW of ENERSA, Javier Berasategui, Hugo Alasino,
Ambrosio Urrutia and Luis Garmendia, and the engineers from TYRCO S.A., that without their support
the development of these tools would not have been possible.
Conclusion
THANK YOU
Visit our web site
www.tyrco.com.ar
Paper #76
DEVELOPMENT OF NEW TOOLS
seguridad eléctrica