IEEE 1656

IEEE 1656-2010 TESTING PARAMETERS

Reliaguard® manufactures guards to prevent power outages caused by animal and bird contacts on energized equipment. Formed from Reliatanium™, Reliaguard’s proprietary dielectric material, guards are specially designed to protect both common and unique equipment configurations. Reliatanium is formulated to meet specific test criteria of the IEEE Standard 1656™-2010.

The IEEE Guide 1656™-2010 is:

  • The Approved Guide for Testing the Electrical, Mechanical and Durability Performance of Wildlife Protective Devices on Overhead Power Distribution Systems Rated up to 38kV.
  • Recognized by the electrical industry as the most comprehensive guideline to date for testing wildlife protective devices on overhead power distribution systems.

Reliatanium Testing includes:

  • Flammability Testing
  • Ultraviolet Aging
  • Tracking and Erosion
  • Resistance
  • Wet Power Frequency Flashover
  • Wet Withstand
When a flashover or contact occurs, cover-up that doesn’t support combustion is important for limiting damage to critical equipment and infrastructure. Reliaguard’s Reliatanium material used in its parts production has achieved a V-0 flammability rating, the highest flammability rating, which means it does not support combustion.

Reliatanium was formulated to meet the specific testing guidelines outlined in the IEEE 1656 – 2010 Guide. The product material addresses such concerns as UV stability and Flame Retardancy and has been tested to a 38KV rating.

RELIATANIUM™ Material DESCRIPTION

Material Description

Reliatanium™ is a proprietary material developed by Reliaguard® Inc. which is formulated specifically for bird and animal mitigation products used in high voltage power systems.

Reliatanium was formulated to meet the specific testing guidelines outlined in the IEEE 1656™-2010 Guide. The product material addresses such concerns as UV stability and Flame Retardancy and has been tested to a 38KV rating.

Technical Features

Designed to prevent wildlife caused outages, these guards are tested for application on equipment up to 38kV.
Performance Test # Test Standards Details Test Result
Flammability IEEE 1656™ – 2010 Section 5.9.1 Self-extinguishing, no drips V-0
Ultraviolet Aging IEEE std 1656™ – 2010 Section 5.6 After completing 1000 hours, no perceived changes to the condition of test samples. Completed
Tracking and Erosion Resistance IEC 60587 6 hrs (Full duration of test) Achieved @ 2KV
Wet Power Frequency Flashover IEEE Std 1656™-2010 Section 5.3 Average flashover value of all samples greater than 90% of the value obtained on the test fixture alone Passed
Wet Withstand IEEE Std 1656™-2010 Section 5.2.1 Option 1 – moving Electrode All Samples did not puncture or flash over Passed @38kV
Properties Unit Test Method Value
Flexural Strength psi ASTM D790 5,200
Flexural Modulus psi ASTM D790 297,500
Tensile Strength @ break psi ASTM D638 2,000
Tensile Strength @ yield psi ASTM D638 2,900
Flammability UL-94 V-0
UV Stability hrs. ASTM D4329 1,000
Durometer Shore D ASTM D2240 65
Heat Deflection °F ASTM D648 (66psi) 225
Dielectric Strength V/mil ASTM D149 549

Importance of testing for Animal Mitigation Guards

Material Description

Reliatanium™ is a proprietary material developed by Reliaguard® Inc. which is formulated specifically for bird and animal mitigation products used in high voltage power systems.

Reliatanium was formulated to meet the specific testing guidelines outlined in the IEEE 1656™-2010 Guide. The product material addresses such concerns as UV stability and Flame Retardancy and has been tested to a 38KV rating.

5.2 Wet withstand

This test is designed to demonstrate that contact with the surface of the guard will not result in a flashover. The guard is installed on a test fixture per the manufacturer’s instructions. An appropriate bare conductor is installed in the test fixture terminal and energized to 20% above rated voltage (26kV for a 38kV system). A grounded probe is moved over the entire surface of the guard. A flashover or puncture is not allowed. As noted in the title, this test is performed wet (with precipitation conditions per IEEE std. 4).

Insulators, transformer bushings, cutouts, etc., have required electrical ratings and performance characteristics that have been verified through appropriate testing. Animal mitigation guards designed for installation on such equipment should be tested to ensure they will not negatively affect those ratings.

IEEE 1656-2010 includes the tests below for this purpose.

5.3 Wet power frequency flashover

In this test, voltage is applied to the test fixture without a wildlife guard installed. The voltage is raised until a flashover occurs. The wildlife guard is then installed per manufacturer’s instructions and the test is repeated. The flashover value with the guard installed must be 90% or more per the manufacturer’s flashover value without the guard installed. As noted in the title, this test is also performed wet (with precipitation conditions per IEEE std. 4).

5.7 Salt fog aging—Testing for unusual service conditions

The “Salt Fog Aging” test is designed for extreme conditions such as coastal areas or other interior locations with the potential for high environmental fallout such as agricultural or heavy industrial areas.

This test is performed on guards in sequence after the Ultraviolet Aging test. For this test, the guard is installed on an insulator with the ground plane and conductor simulating normal installed conditions. The assembly is placed in a salt fog chamber and the conductor is energized at system voltage (19.9kV for a 34.5kV system) for 1000 hours. Flashover should not occur.

Animal Mitigation guards should be tested to demonstrate they will stay on and performance will not degrade due to UV exposure. IEEE 1656-2010 includes the tests below for this purpose.

5.6 Ultraviolet aging

This test is designed to demonstrate that electrical performance of the guards is not affected after UV exposure. This test is performed on the same samples used in the Wet Withstand and Wet Power Frequency tests described above. Those guards are placed in a UV test chamber (UVA 340 lamps) for 1000 hours. The condition of the guards is noted and the Wet Withstand and Wet Power Frequency tests are repeated. A flashover or puncture is not allowed.

5.8 Retention

This test is designed to demonstrate guards will remain installed when exposed to extreme winds. One test option is to install guards on a test fixture that simulates installed conditions. Then, from various angles, the guards are exposed to a constant wind speed of 60 mph. Guards must remain installed.

Animal Mitigation guards should also be tested to demonstrate flame retardant properties.
Guards that are not flame retardant can catch fire due to a flashover. This can result in flaming material falling to the ground below and causing a wildfire.

IEEE 1656-2010 includes the tests below for this purpose.

5.9 Flammability

The UL94 test is included as an option to demonstrate flame retardant properties. A rating of V-0 is the highest rating and means that when exposed to a flame for 10 seconds, the material will self-extinguish a will not release flaming droplets.

Reliaguard ReliataniumTM guards pass all the above tests, which demonstrate:

  • Equipment ratings are maintained
  • Guards can prevent wildlife contact
  • Guards are not affected by extreme environmental conditions
  • Guards are flame retardant, will self-extinguish and will not drip flaming material
Some manufacturers publish only material tests results or material properties. Such information does not demonstrate how the guards perform once they are installed. IEEE 1656-2010 requires tests on actual guards to demonstrate electrical and environmental performance. Performance of wildlife guards is a combination of good design, material formulation and material processing. This can only be demonstrated through testing of the guards. “Materials” tests tell only part of the story.