Warning Sphere
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Warning Sphere without Metal Annexes for Warning

Warning sphere is used for warning aircraft pilots in daytime and nighttime, which is compliant with International Civil Aviation Organization (ICAO) recommendations annex 14 chapter 6. It can be used in overhead cable, guyed wire, especially in extra high voltage power transmission line, cross river power transmission line, cross road, bridge power transmission line and so on. It is made of high-grade polyethylene with the color of red, orange, white. Different colors' warning sphere should be displayed alternately. If there are many lines, warning sphere should be displayed on the highest line. It can resistant to corrosion, rust, water, dust, high temperature, can be used for long time.

Warning sphere specification

  • Sphere body material: high-grade polyethylene.
  • Color: aviation red, aviation orange, aviation white.
  • Sphere diameter: 200 mm, 300 mm, 340 mm, 400 mm, 600 mm.
  • Thickness: 8 mm.
  • Weight: 2-4 kg.
  • Visible distance: 1250 m from the air and 350 m from the ground.
  • Voltage range: < 150 KV.
  • Conductor diameter: 6-26.5 mm.
  • Reflective strip: optional.
  • Preformed armor rods: optional.
  • Warranty: 2 years.
  • Packaged in carbon box or wooden box.

Standard

A warning sphere in aviation orange color on the white background.
WS-1: Orange warning sphere.
A warning sphere in aviation red color on the white background.
WS-2: Red warning sphere.
A warning sphere in aviation white color on the white background.
WS-3: White warning sphere.
The picture shows an orange warning sphere on the conductor.
WS-4: An orange warning sphere is bundled on power line.
The picture shows upper slot of red warning sphere clearly.
WS-5: Upper slot of red warning sphere.
The picture shows lower slot of red warning sphere clearly.
WS-6: Lower slot of red warning sphere.
A rotating red warning ball, we can see it from all angles.
WS-7: Warning sphere in all angles.
A rotating red warning ball installed on power line conductor, we can see it from all angles.
WS-8: Warning sphere on power line conductor in all angles.

Features of warning sphere

  • Resistant to corrosion, rust, water, dust, high temperature.
  • Not have metal annex, good integrity, high strength.
  • Light, not have influence for power line.
  • Self thickness, smooth appearance, fresh color.
  • Properties do not change under various complex environment, such as rain, snow, ice, oil and so on.
  • Warning sphere can suit power line conductor which diameter is between 6 mm and 26.5 mm.
  • Optional preformed armor rods for fixing warning sphere on power line.
  • Reflective tape can make pilots see power line clearly.
  • Easy to install.
  • Long service life.

Application of warning sphere
Our polyethylene warning spheres are used in overhead cable, guyed wire, supporting tower, especially in super high voltage power transmission line, cross river power transmission line, cross road, bridge power transmission line and so on.

Installation: Five steps for warning sphere installation.

The picture shows a warning sphere with two slots and specific appearance of two slots.
1. The warning sphere has two slots. Upper slot facing sky is used for fixing the preformed armor rods. Lower slot facing ground is used for attaching the conductor. (300 mm diameter warning sphere as example)
The armor rods are wrapping on conductor.
2. Apply part of armor rods to conductor, make sure wrapping armor rods with the same direction as conductor twisted.
The warning sphere is placed on the conductor and the armor rods are placed on upper slot.
3. Place the warning sphere on the conductor, then apply armor rods on the upper slot.
The picture shows the process of wrapping the rest armor rods on conductor.
4. Wrap the rest of armor rods to conductor.
The picture shows a finished in installing warning sphere.
5. Warning sphere is installed on conductor.

Warning sphere installation note

  • The spacing between two consecutive warning spheres or between a warning sphere and a supporting tower should be appropriate to the diameter of the warning sphere. The maximum spacing is 30 m with sphere's diameter is 600 mm.
  • If multiple wires or cables are involved, warning sphere should be located in the highest wire.
  • When installed, different colors' warning spheres should be displayed alternately. The color selected should contrast with the background to ensure marker balls will be seen clearly.
  • Warning spheres should alternate aviation orange, white, yellow, with aviation orange markers positioned at each end.
  • If less than four markers are on the line, all markers should be aviation orange.

Inquiry for Our Product

Havad Industrial Limited
E-mail: sales@warningspheres.com

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