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Technical Resources
Bird Flight Diverter
Specifications& Documentation
Consolidated technical specifications, CEA spacing guidelines, installation procedure, type-test documentation and downloadable datasheets for the complete Prakritis bird flight diverter range — Aero Spin, LED and Non-LED.
Technical Specifications
Bird Flight Diverter
Specifications, Compared
The full engineering specification for Aero Spin, LED and Non-LED bird flight diverters, side by side. Every parameter below is verified as part of Prakritis’ type-test programme — see Testing & Quality Assurancefor methodology.
| Specification Parameter | LED Blinking Marker (PLM / LD-V1) |
Non-LED Marker (PLM / NLD-V1) |
|---|---|---|
| Power Requirement | Solar (Self-contained, no grid needed) | None — Fully passive |
| Maintenance Requirement | Minimal — Sealed electronics | Zero — No electronics or moving parts |
| Weight | Less than 500g | Less than 350g |
| Daytime Visibility | Retroreflective + Active LED | Retroreflective surface |
| Night Visibility | High-intensity LED blinking (1km+ range) | Photoluminescent glow-in-dark |
| Conductor Clamp Size | Universal — 5mm to 38mm | Universal — 5mm to 38mm |
| Working Temperature | −20°C to 100°C | −20°C to 100°C |
| CEA Compliance | Fully compliant | Fully compliant |
For model-specific installation guidance, applications and downloadable datasheets, visit the Aero Spin, LEDor Non-LEDproduct pages directly.
Installation Guide
Live-Line Installation,
Standard Across the Range
Every model in the Prakritis range shares the same universal clamp and is designed for hot-stick installation on energised conductors, avoiding the need for a planned line outage. The general sequence below applies to all three models; model-specific notes (such as solar panel orientation for the LED unit) are covered on each product page.
Confirm mounting points against the site’s diverter spacing plan — see CEA Guidelines below — and record conductor or earth wire diameter at each point.
Installation is carried out by trained live-line crews using standard hot-stick procedure and the utility’s approved live-line work method statement.
Position and close the universal clamp on the energised conductor. The clamp accommodates 5mm–38mm diameters without adapters or model changes.
LED units require solar panel orientation toward maximum daily sun exposure; Aero Spin and Non-LED units require a free-rotation check for the flapper assembly.
Confirm clamp security against the rated pull strength (>100kg) before withdrawing the hot stick, and log the installation point against the site diverter register.
Regulatory Reference
CEA Guidelines for
Bird Flight Diverters
| Voltage Class | Recommended Diverter Interval | Staggered Placement | Primary Application Note |
|---|---|---|---|
| 33 kV – 66 kV | 10 m – 15 m | Yes | Distribution & Sub-transmission lines near flight corridors |
| 132 kV – 220 kV | 10 m – 12 m | Yes | Central phase and shield wires in high-density bird zones |
| 400 kV | 5 m – 10 m | Yes | Earth wire / OPGW and top conductor lines (CEA priority) |
| 765 kV & Above | 5 m | Yes | High-altitude & GIB (Great Indian Bustard) habitat corridors |
What the CEA Specification Covers
Clamp pull strength, UV and weathering resistance, and dimensional tolerances for the diverter body and flapper assembly.
Minimum clearance and dielectric requirements to ensure the diverter does not compromise line insulation or induce corona discharge.
Minimum reflective area, photometric output for active devices, and colour contrast requirements against typical sky and terrain backgrounds.
Indicative diverter spacing by voltage class, tightened at identified high-risk zones such as Great Indian Bustard habitat corridors.
The figures above are indicative and intended for initial planning. Final spacing should always be confirmed against the current CEA advisory in force and a site-specific risk assessment — our engineering team can assist with corridor-specific spacing plans.
Testing & Quality Assurance
Verified Before
It Ever Reaches a Line
Every model in the range is subjected to the same core type-test programme before dispatch, in line with the CEA technical specification for bird flight diverters.
UV & Weathering
Accelerated UV exposure and thermal cycling to verify housing and reflective materials retain performance across the full 15-year design life.
Mechanical & Pull Strength
Clamp pull-force testing beyond 100kg and vibration testing to simulate wind-induced conductor motion over the operational life of the device.
Electrical Clearance
Dielectric and clearance verification confirming the diverter does not compromise line insulation or induce corona discharge on energised conductors.
Photometric Output
Reflective intensity and, for the LED model, luminous output and blink-pattern verification against the minimum visibility thresholds referenced in the CEA specification.
Ingress Protection
IP65 sealing verification for the LED model’s solar panel and battery housing, confirming resistance to dust ingress and low-pressure water jets.
Batch Consistency
Dimensional and material sampling across every production batch to confirm consistency with the type-tested reference unit before dispatch.
Downloads
Datasheets &
Catalogues
Everything a procurement or specification team needs in one place — model-wise datasheets, the full range catalogue, installation guide and compliance documentation.
Model Datasheets
Dimensional drawings, materials and mechanical ratings for the Aero Spin diverter.
Download PDFElectrical parameters, runtime data and dimensional drawings for the LED diverter.
Download PDFMaterial specifications and dimensional drawings for the Non-LED diverter.
Download PDFCatalogues & Guides
Aero Spin, LED and Non-LED models in one document, with application guidance.
Download PDFFull hot-stick installation procedure with model-specific notes and diagrams.
Jump to GuideResearch & Field Data
Design Choices,
Grounded in Field Behaviour
The three-model structure of the Prakritis range — and the specific mix of retroreflection, photoluminescence and active illumination used within it — is informed by published avian ecology literature on bird flight behaviour and collision risk, alongside field observation from installed corridors and consultation with utility engineering teams on real-world maintenance constraints.
We do not publish proprietary field data on this page, but our engineering team can share methodology summaries, monitoring approach, and relevant third-party research references on request — particularly useful for environmental clearance submissions and academic or NGO collaboration around Great Indian Bustardand wetland bird corridor protection.
Installation and maintenance data gathered from utility partners informs iterative refinement of clamp design and housing durability.
Visibility mechanism selection draws on published research into large-bird flight mechanics, reaction distance and low-light collision risk.
Documentation and methodology summaries are available to support EIA and environmental clearance submissions for renewable and transmission projects.
Common Questions
Documentation,
Answered
Questions we hear most often from procurement, EPC and design engineering teams reviewing this page.
What spacing does CEA recommend for bird flight diverters?
Recommended spacing varies by voltage class and species risk, generally tightening on higher-voltage, wider-conductor-bundle lines. Indicative spacing by voltage class is provided in the CEA Guidelines section above; final spacing should always be confirmed against the current CEA advisory and a site-specific risk assessment.
What type tests are performed on Prakritis bird flight diverters?>
Every model undergoes UV and weathering resistance testing, mechanical pull and vibration testing, dielectric clearance verification, and photometric testing of reflective or LED output, in line with the CEA technical specification for bird flight diverters. See Testing & Quality Assurance above for the full list.
Where can I download datasheets and the product catalogue?>
Model-wise datasheets, the full product catalogue and installation guide are available for download in the Datasheets & Catalogues section on this page, or by contacting our engineering team directly for a procurement-ready document package.
Do you provide spacing plans for a specific project? >
Yes. Our engineering team can review your line voltage, span length and corridor risk profile to recommend a spacing and model-mix plan aligned with CEA guidance and your project’s environmental clearance conditions.
Get in Touch
Need a Document We
Haven’t Listed Here?
Type-test certificates, approval letters, EIA-support documentation or a corridor-specific spacing plan — our engineering team can put together the exact package your submission needs.