LED Bird Flight Diverter (PLM/LD-V1) — Active Solar-Powered Illumination for 24-Hour Avian Protection

What is the LED Bird Flight Diverter?

The Prakritis LED Bird Flight Diverter (model PLM/LD-V1) is the company's highest-specification avian collision mitigation device — combining the passive visibility mechanisms of retroreflection, photoluminescence, and 360-degree rotational motion with active LED illumination for round-the-clock protection. It is purpose-engineered for deployment in high-risk zones where avian mortality rates are elevated, endangered species are present, and standard passive diverters are insufficient.

Six high-intensity blinking LEDs on each face of the circular warning disc emit distinct orange/white light pulses that are detectable by birds at distances significantly greater than passive retroreflectors — particularly in fog, overcast conditions, post-twilight, and before sunrise. A solar-charging system with intelligent daytime auto-cutoff ensures the LED module is always charged and operational during high-risk periods without manual intervention.

Key Benefits of the LED Diverter

• Active LED illumination provides 24-hour avian protection — the only Prakritis model effective in complete darkness and dense fog
• 6 high-intensity blinking LEDs per face deliver conspicuous, motion-coded visual signals aligned with avian visual response characteristics'Solar self-charging with intelligent auto-cutoff — zero manual intervention required, always charged when needed
• 100+ hour battery reserve ensures reliability through extended monsoon cloud cover and low-solar periods
• Vertically mounted solar cells minimise dust accumulation — critical performance advantage in Rajasthan, Gujarat, and Madhya Pradesh desert transmission corridors
• Complete passive visibility suite retained: 360° rotation, retroreflection, glow-in-dark — LED adds a fourth layer of protection
• CEA-compliant and PGCIL/GETCO/RVPN approved — mandatory-specification compliant for GIB habitat zone deployments
• Universal clamp (5mm–38mm) — single device fits all conductor types across HVAC, HVDC, and sub-transmission networks

Testing & Certification

The PLM/LD-V1 undergoes the full CEA type test battery with additional electronic module validation:

• Mechanical Strength  — clamp slip (±25kg) and pull (+100kg)
  Vibration Test — Aeolian vibration endurance
• Temperature Cycle Test — -20°C to +100°C functional verification (electronics and battery included)
• Heating Cycle Test — thermal endurance under cyclic load
  RIV / Visual Corona Test — EMC validation on HV lines (LED module active and inactive states)
• Corrosion Resistance — salt spray endurance for coastal and industrial zones
• Ageing Test — UV and weathering accelerated exposure
  Visual and Dimensional Examination — CEA tolerance conformance
• LED Function Test — blinking frequency, luminous intensity, auto-cutoff circuit verification
• Battery Performance Test — charge retention, runtime, and thermal performance

Ideal Applications for the LED Diverter

Primary Recommendation: High-Risk and Ecologically Critical Zones

The LED diverter (PLM/LD-V1) is the recommended choice wherever passive diverters alone are insufficient — specifically in locations with documented nocturnal bird activity, endangered species presence, active migratory flight corridors, or regulatory mandates for active illumination.

• Great Indian Bustard (GIB) critical habitat corridors in Rajasthan and Gujarat — Supreme Court-directed BFD deployment zones
• Lines crossing major migratory routes on the Central Asian Flyway — particularly waterfowl and crane migration corridors
• Transmission lines near Ramsar wetlands, bird sanctuaries, and Important Bird Areas (IBAs)
• Airport vicinity transmission lines where nocturnal bird strike risk near airfield perimeters is elevated
• Lines in Protected Areas or buffer zones where any bird mortality triggers regulatory scrutiny
• Sections of new renewable energy transmission export lines crossing identified high-mortality risk segments
• Utility commitments to wildlife mitigation as part of Environmental Clearance conditions or Lender requirements  

Appropriate for Mixed Deployments

LED diverters do not need to be installed on every span of a line. Best practice involves risk-zoning the line — deploying LED models at the highest-risk spans (habitat crossing points, river crossings, wetland margins) and Non-LED models on lower-risk spans — optimising protection per unit cost.