Showing posts with label Bird Collision Prevention Power Lines. Show all posts
Showing posts with label Bird Collision Prevention Power Lines. Show all posts

Indolite; India's #1 Manufacturer of Bird Diverter (also known as Bird Flight Diverter, Bird Flapper, Firefly bird diverter)

CEA Indolite Approval CEA Guidelines GAP Between BFDs (Check Pg.3, 4, 11)
Dynamic Bird Flight Diverter How to Install a Dynamic Bird Diverter
Non-LED - Glow in Dark Type
Model WMSv1
Model WMSv2
LED Type (Dual Visibility– 6 LEDs Each Face)
Model NFv2
Model NFv3
Static (Non Dynamic) Bird Flight Diverter
Bird Flight Diverter Model WMSv1 for overhead power transmission lines
Helical/ Spiral Bird Flight Diverter
Bird Flight Diverter Model WMSv2 high visibility bird protection device
Static Bird Flight Diverter
More Models
Jump to: Dynamic BFD Non-LED Models LED Models Static BFD Helical/Spiral Model Comparison FAQ
  1. Why Bird Flight Diverter?
  2. Dynamic Bird Diverters
  3. Non-LED Models: WMSv1 & WMSv2
  4. LED Models: NFv2 & NFv3
  5. Static Bird Diverters
  6. Helical/Spiral Diverter
  7. All Models Comparison
  8. FAQ
6Product Models
CEA ✓Govt Approved
50K+Units Installed
10+Years Experience

Why Do You Need a Bird Flight Diverter?

A Bird Flight Diverter (BFD) is a device installed on overhead power line conductors to enhance their visibility to birds in flight — preventing fatal bird-wire collisions and protecting both wildlife and power infrastructure. India's Central Electricity Authority (CEA) and Hon'ble Supreme Court of India has made Bird Diverter installation mandatory on all transmission lines near Great Indian Bustard habitation, and eco-sensitive zones. Indolite BFDs are the only ones in India, approved by CEA, for installation in these areas.

🦅Bird DiverterEarly warning signal
💡LED Bird Diverter24-hour night visibility
🌀Non-LED DiverterGlow-in-dark type
🔶Helical DiverterEnlarged Conductor visibility
⚡Power Line MarkerAviation Marker Sphere
🛡️Wildlife ProtectionApproved and used by reputed power generation companies world wide
Looking for FireFly Bird Flight Diverter? Choose Indolite — India's CEA-Approved Alternative

Engineers and procurement teams searching for a FireFly Bird Flight Diverter in India are increasingly choosing IndoDivert — India's only Central Electricity Authority & Supreme Court monitoring committee approved Bird Flight Diverter — for superior performance, full regulatory compliance, and proven field reliability across Indian transmission networks.

  • Only BFD-approved by CEA under Hon'ble Supreme Court India Guidelines
  • Largest warning disk in segment — outperforms FireFly Bird Flight Diverter's
  • 6 high-intensity LEDs per face — 300–400m night visibility
  • Patent-protected RPM governor — control RPM of Warning Disk
  • Hot-line drone installation — zero power shutdown
  • 1,00,000+ units installed — 10+ years field experience
  • Made in India — PAN worldwide supply
WhatsApp for Comparison & Quote →
🦅 Most at-risk birds in India: Sarus Crane, GIB - Great Indian Bustard (critically endangered), Flamingo, Eagles, Vultures, Storks, Pelicans & migratory waterfowl — all fly at the exact height of overhead conductors.
🌀
Dynamic Bird Flight Diverters
Wind-activated rotating models — Significantly Enhance power line visibility

Dynamic Bird Flight Diverters are wind-activated rotating devices that swing, sway and rotate on the power line conductor, creating continuous motion-based visual alerts. The 3D motion makes them significantly more Prominent and Visible as compared to static markers — alerting birds like eagles, vultures, cranes and the critically endangered Great Indian Bustard about presence of obstruction in their flight path. CEA specifically recommends dynamic BFDs for eco-sensitive zones and Important Bird Areas (IBAs).

IndoDivert Bird Flight Diverter clamps are custom engineered for respective conductors. This ensures a robust, non slip grip without pinching the conductor and eliminates the need for rubber linings to compensate for size mismatch.

In contrast, universal adjustable clamps inherently provide lower grip strength. Because of this lighter grip, to avoid slippage and falling, manufacturers are forced to reduce the warning disk size, which directly compromises visibility and long distance detection.

IndoDivert's warning disk is the largest and strongest in the segment. While others typically offer a 3–4 mm thick disk, Indolite uses a 20 mm thick collar reinforced disk, engineered to withstand high wind pressures, gusts, and repeated wind lash impacts without deformation.

The warning disk is the core functional element of any bird diverter — it is the component that alerts birds to an obstruction in their flight path. Any reduction in disk size or structural strength reduces the diverter's effectiveness.

  • 🌀
    Wind-Activated RotationSpins automatically with wind — no power, no battery needed. Motion creates the most effective visual alert for birds.
    At high RPM, warning disk of BFD can become invisible (like blades of fan become invisible at high speed). IndoDivert's modulated rotation mechanism governs RPM, thus ensures visibility.
  • 📋
    Patent Technology - Most Visible in segmentIndoDivert - Only Bird Flight Diverter with vibration damper; IP-65 rated lubrication tank for bearing, suspension spring to combat flipping or roll over of warning disk on conductor, tailor made clamps for respective conductor/OPGW providing robust grip.
  • 🔧
    Hot-Line InstallationPatent protected Indolite Bird Diverter is designed to be installed on live/energised lines using drone and/or hot stick — zero power shutdown required.
🌑 Non-LED — Glow in Dark Type Dynamic Bird Diverters

Indolite's Non-LED; Dynamic Bird Flight Diverters use special glow-in-the-dark phosphorescent reagent that stores energy during daylight and glows at night, providing passive visibility during low light conditions; without any battery or power source. These are the most cost-effective dynamic BFD solution for multi voltage power line protection projects.

Non-LED; Glow in Dark Indolite WMSv1 Dynamic Non-LED Bird Flight Diverter
Dynamic Bird Flight Diverter Model WMSv1

Bird Flight Diverter with wind-activated rotating disk and glow-in-the-dark material ideal for 33kV–500kV transmission lines in bird-prone areas.

View WMSv1 Details →
Non-LED · Glow Dark Indolite WMSv2 Dynamic Non-LED Bird Flight Diverter
Dynamic Bird Flight Diverter Model WMSv2

Dynamic Bird Diverter (Non-LED) with smooth low-wind rotation bearing — perfect for high-risk wildlife and bird corridor zones.

View WMSv2 Details →
Feature WMSv1 WMSv2
Wind-activated rotation mechanism
Controlled RPM
Glow-in-dark phosphorescent material
Day & passive night visibility
Lubrication Tank
Hot-line installation compatible
Outdoor lifespan10 Year15 Year
Corona Tested400KV765KV
BearingSingleDouble (optional)
CEA Compliance100%100%
CEA Approved Only BFD — Approved by CEA/ Supreme Court Monitoring Committee
🌑 Why Glow-in-Dark? Many bird species — especially large migratory birds like flamingos, cranes and storks — are most active at dawn and dusk. Glow-in-dark BFDs charge during daylight and emit passive luminescence through the night, providing round-the-clock protection without any electrical connection or battery.
💡 LED Type — Dual Visibility (6 LEDs Each Face)

Indolite's LED Bird Flight Diverters are the most advanced bird protection devices. This bird flight diverter features the largest warning disk in its segment, outperforming alternatives such as the Firefly Bird Diverter and A & S Creations and others. With six high‑intensity LEDs visible on each face, it delivers exceptional visibility and ensures maximum safety — even in low‑light conditions. These are the recommended solution for the highest-risk transmission corridors, including lines passing through Great Indian Bustard (GIB) habitats, flamingo flyways, and crane migration routes.

LED · 6 Per Face Indolite NFv2 LED Dynamic Bird Flight Diverter
LED Dynamic Bird Flight Diverter Model NFv2

Solar-charged LED dynamic bird diverter with 6 high-intensity LEDs visible per face. Provides active night illumination and wind-activated 24x7 rotation — dual visibility 24×7.

  • 6 high-intensity LEDs visible per face
  • Solar-powered — no external power supply needed
  • Wind-activated auto rotation 24x7
  • Active LED illumination for 4 nights at night
  • Visible 300m+ at night
  • CEA approved — critical wildlife zones
View NFv2 Details →
LED · 6 Per Face Indolite NFv3 LED Dynamic Bird Flight Diverter
LED Dynamic Bird Flight Diverter Model NFv3

Latest generation LED bird diverter with upgraded solar panel, higher LED brightness, and improved rotation mechanism. The most advanced bird flight diverter by Indolite.

  • Next-gen 6 LED per face array
  • Upgraded high-efficiency solar panel
  • Brighter illumination — 400m+ visibility
  • Improved all-weather bearing
  • CEA approved — GIB habitats & IBAs
  • Forest & Wildlife Board accepted
View NFv3 Details →
💡 LED vs Non-LED — When to Choose LED: For lines passing through Great Indian Bustard (GIB) habitats, flamingo flyways, crane migration corridors, or any area with documented night-flying bird activity — LED type BFDs are strongly recommended by MOEF&CC and Wildlife Institute of India (WII).
Our LED type models: NFv2 and NFv3.
🔶
Static (Non-Dynamic) Bird Flight Diverters
Fixed passive markers — No moving parts · Lowest maintenance · CEA Approved

Static Bird Flight Diverters (BFDs) are stationary overhead power line markers designed with no moving parts. Their primary function is to increase the apparent size of conductors, making overhead power lines more visible to birds and reducing the risk of collisions. With zero maintenance requirements, static bird diverters are among the most cost‑effective solutions for avian protection. However, compared to dynamic bird flight diverters, they may attract less attention from birds due to the absence of movement or light‑based features.

All Bird Flight Diverter Models — Complete Comparison

Choose the right Indolite Bird Flight Diverter model for your power line project — compare all 6 models side by side:

Model Type LED Glow Dark Rotation Best For CEA
WMSv1DynamicNoYesYes33kV–220kV corridors✅
WMSv2DynamicNoYes+YesHigh-priority IBAs✅
NFv2Dynamic LED6/faceYesYesGIB, flamingo zones✅
NFv3Dynamic LED6/face+YesYesCritical night flyways✅
SpiralStatic HelicalNoNoFixedAll line voltages✅
Static FlatStaticNoNoFixedHigh-wind open terrain✅

Frequently Asked Questions — Bird Flight Diverters

What is the difference between LED and Non-LED Bird Flight Diverters? ▾
Non-LED (WMSv1, WMSv2) use glow-in-dark phosphorescent material — they charge in sunlight and glow passively at night. Zero power needed. LED models (NFv2, NFv3) have solar-powered LEDs (6 visible per face) that actively illuminate at night, providing far greater visibility (300–400m+) for birds. LED models are recommended for the highest-risk corridors — GIB habitats, flamingo flyways, and crane migration routes.
What is the difference between WMSv1 and WMSv2 bird diverters? ▾
WMSv1 is the standard entry-level dynamic bird diverter with a single-bearing rotation system — ideal for areas with regular wind. WMSv2 features an upgraded mechanism equipped with RPM governor, enhanced glow-in-dark material with longer emission duration, and is specified for high-priority bird corridors and Important Bird Areas (IBAs) where maximum protection is required.
What is the difference between NFv2 and NFv3 LED bird diverters? ▾
NFv2 is Indolite's standard LED dynamic bird diverter with 6 LEDs per face and solar charging — providing 300m+ night visibility. NFv3 is the latest generation with an upgraded high-efficiency solar panel, brighter LED array (400m+ visibility), and improved all-weather bearing system. NFv3 is recommended for the most critical corridors including Great Indian Bustard (GIB) habitats as per MOEF&CC guidelines.
What is a Helical/Spiral Bird Flight Diverter and why is it widely used? ▾
A Helical Bird Diverter (also called Spiral Bird Diverter) is a coil-shaped marker that wraps 360° around the overhead conductor — apparently magnifying size of conductor making it visible to approaching birds. Indolite's IndoDivert Spiral is made from UV-stabilised yellow polymer, clips on conductor/OPGW, requires zero maintenance. Since it is static, its use as a power line marker is discouraged, as it is considerably less effective than dynamic bird diverters.
Which bird diverter model should I choose for my project? ▾
Dynamic Bird Flight Diverters are strongly recommended over Helical diverters. Choose based on your line location:
• WMSv1 — Standard bird habitat zones, 33kV–110kV lines
• WMSv2 — High-priority IBAs, critical wildlife corridors
• NFv2 — Lines near GIB habitats, flamingo/crane flyways
• NFv3 — Most critical night-flyway corridors, MOEF&CC mandated zones
• Spiral/Helical — In low flying zones, generally like a line marker
• Static - Clip On Type — In areas designated as low-flying zones.

Contact Indolite's technical team for project-specific recommendations.
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Can all Indolite Bird Diverters be installed on live power lines? ▾
Yes. Indolite's Dynamic Powerline Bird Diverter models — WMSv1, WMSv2, NFv2, NFv3 — are designed for hot-line installation on energised (live) overhead power lines using hot-stick and drones. This means zero power shutdown and zero supply interruption during installation.
What is a FireFly Bird Flight Diverter and how does Indolite compare to it? ▾
A FireFly Bird Flight Diverter is a globally known bird protection device installed on overhead power lines to prevent bird-wire collisions using reflective surfaces and motion-based visibility features.

Indolite Bird Flight Diverters by Indolite Devices Private Limited are a technically superior Made-In-India alternative:
• Only BFD in India — accepted by Central Electricity Authority and Supreme Court Monitoring Committee for GIB zones
• Largest warning disk in its segment
• Patent-protected RPM governor and double bearing model also available
• 6 high-intensity LEDs per face on LED models — 300–400m night visibility
• 1,00,000+ units installed — 10+ years of proven field performance

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Can Indolite Bird Flight Diverter replace a FireFly Bird Flight Diverter on existing projects? ▾
Yes. Indolite Bird Flight Diverters are a proven replacement for projects currently using or specifying a FireFly Bird Flight Diverter. All models support hot-line installation on live conductors — zero power shutdown needed.

Choose the right model for your replacement project:
• WMSv1 / WMSv2 — Non-LED dynamic replacement, glow-in-dark, 33kV–765kV lines
• NFv2 / NFv3 — LED dynamic replacement, 6 LEDs/face, GIB & flamingo zones
• Spiral / Static — Cost-effective static replacement for low-risk line sections

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India's #1 CEA Approved Power Line Bird Diverter Manufacturer

Choose the Right Bird Diverter
for Your Power Line Project

CEA-approved models for all Voltage Classes — Dynamic LED, Non-LED Glow-Dark, Helical Spiral & Static. Indolite Devices supplies PAN World.

View All 6 Models Contact Indolite WhatsApp Now
Bird Flight Diverter LED Bird Diverter Non-LED Bird Diverter WMSv1 WMSv2 NFv2 NFv3 Helical Bird Diverter Spiral Bird Diverter Power Line Marker CEA Approved Bird Deterrent Overhead Power Line Markers Wildlife Protection Device Indolite Devices FireFly Bird Flight Diverter Bird Flight Diverter LED Bird Diverter Non-LED Bird Diverter WMSv1 WMSv2 NFv2 NFv3 Helical Bird Diverter Spiral Bird Diverter Power Line Marker CEA Approved FireFly Bird Flight Diverter Bird Deterrent Overhead Power Line Markers Wildlife Protection Device Indolite Devices
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FAQ - Bird Flight Diverter


Large birds, like flamingos, geese, swans and few endangered species, while migrating are at greatest risk. These birds can fly up to 135 kms per hour. (http://www.newworldencyclopedia.org/entry/Swan)

Due to their size and speed, these birds cannot maneuver fast. It is estimated that average 33 million birds are killed due to transmission line collision in USA alone. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4081594/

Low light conditions during dawn and dusk limit visibility of electrical transmission line conductors. Even during day time, silver colour of conductor merges with horizon, diminishing visibility.

Migrating birds usually travel in flocks. Tail end birds are most vulnerable. The ones at the front obstruct the view of birds at the tail end. Tail end birds, who usually follow birds in their front, do not get chance to change their path at last moment and collide with transmission lines. These accidents are mostly fatal as birds lose consciousness and fall to ground from a great height.

A. IndoDivert works on all type of transmission lines and towers. Its selection does not depend on capacity of transmission line.

B. Model of IndoDivert™ is selected on the basis of wind pressure/ speed in respective area, where it is proposed to be installed.

C. Clamp size varies according to conductor diameter

IndoDivert™ comes with spring loaded clamp as well as fastener type clamp. Majorly, spring loaded clamps are used for convenience and fast clamping speed. Also, because spring loaded clamp can be mounted from a distance, as against fastener type clamp.

Our clamp design is patented.

i. We do not use metal clamps, as they increase conductive surface area of conductor and thus increase transmission loss.

ii. Mounting clamps are made using very high quality UV Stabilized, glass reinforced, weather resistant polymer, hence there are no transmission losses because of these. UV and weather resistance increase longevity.

iii. For uniform application of force by both arms of clamps, movement of clamp is controlled by polymeric gears. Non-corrosive material springs provide grip.

Installing IndoDivert™ is a very simple., though reaching installation point may be challenging.

After accessing installation point, it does not take more than 30 seconds to clamp IndoDivert™ on the conductor.

It is strongly recommended to fix IndoDivert on all conductors. When, diverter is fixed only on top (earth) conductor, it increases the risk of accident manifold. While migrating, birds fly at their best attainable altitude. Finding an obstruction, to avert accident, birds tend to dive down towards gravity, since diving down is comparatively easy (gravity helps) as compared to going up, against the gravity.

While diving downwards, birds steer themselves in between bunch of conductors which increases chances of accident multifold.

For double circuit, since phases are at same height level, we need not fix on both circuits. Fixing only on one circuit (one side) is enough. As per guidelines laid by WII vide their letter dated 4 Feb 2019 Wildlife Institute of India has instructed to install Bird Diverters on all phases and earth/OPGW cables.

As per guidelines of Ministry of Environment, Forest and Climate Change, Government of India, vide their letter number F.No. 6-104/2019 WL dated 29.08.2019, it has been instructed that spacing between bird flight diverters should not be more than 5m to 10m. It has also been advised that Bird Flight Diverter should be visible at night.

In case of new lines, it is advisable to install diverters before electrification, post stringing.

is possible to install IndoDivert on electrified lines, as well. Here diverters are installed by specially trained technicians.

Guidelines of Wild Life Institute of India say that, for maximum visibility, Bird Flight Diverters must be installed in staggered pattern.

• For example, if there are 4 rows of conductors (1 earth + 3 phases), then first diverter is hung on the top (earth) conductor at a distance of 2.5m from tower.

• 2nd diverter is hung on top phase conductor at a distance of approx. 2.5 meters from first diverter.

• 3rd on middle phase conductor, at a distance of approx 2.5 meters from 2nd diverter.

• 4th diverter is clamped on lowest conductor at a distance of 2.5 meters from 3rd diverter.

• Further all diverters are to be placed at a gap of 5 meters from the previous one, on the respective conductor.

IndoDivert is designed to dissipate wind energy and not to allow same to pass on to conductor. It’s spinning, swaying and swing actions disperse wind pressure very efficiently and effectively.

Average weight of IndoDivert ranges from 800gms to 1200gms (depending of model of IndoDivert)

In an average span of 300 meters (between two towers), at a gap of 10 meters (between two diverters), 29 diverters need to be placed, i.e approx. 29kg weight on conductor, scattered in 300 meters. This does not affect sagging.

This weight can be very easily borne by even OPGW conductor.

Our product range includes products like scary eye, balloons etc, but performance of Bird Marker and IndoDivert Bird Flight Diverter is far better.

Eyes notice moving objects more quickly than seeing stationery objects like scary balloons etc.

IndoDivert™ has dancing dangler which besides moving, flips and rotates, thus comes in notice from a distance.

It glows during dark and its reflector reflects Sun and Moon light, which increases its visibility.

Usage of balloons etc on transmission and signal lines has minimized after experiencing results of IndoDivert- Bird Flight Diverter.

Bird Marker/ Flappers

A. Flappers are designed for low wind pressure areas and for distribution lines up to 33 Kva.

B. Size of bird marker/ flapper is small

C. Bird Marker/ flapper usually are suspended using a ring, which does not allow this to rotate and sway. This only swings

IndoDivert: Bird Flight Diverter

A. Dangler of IndoDivert, due to its swaying and rotational motion, for sure gets noticed by birds.

B. Size of IndoDivert is adequately big… to be noticed easily, but not too big so as to reduce safe distance between conductors.

C. Disk of Bird Diverter rotates/ swings and sways. Rotational movement is assisted with bearings for longevity and precision. During Swaying movement, only stainless- steel parts come in contact with each other. Moving action helps want the bird from a great distance, about presence of obstruction in their flight path.
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