

FAULT PASSAGE INDICATOR
Overhead Networks
Faster Fault Detection for Enhanced DISCOMs Revenue & Customer Experience
Our customised Fault Passage Indicators help field teams identify fault locations quickly in distribution networks. By reducing manual inspection time and crew movement, it supports faster supply restoration and improved network reliability.

How It Works?







Monitor
Current Sensor Tracks Line Current 24/7
Detect
Spikes Instantly When Fault Occurs
Confirm
Permanent Fault Verified
Alert
LED Flashes & GPS Sent
Locate
Crew Pinpointed
Resolve
Repair & Restore
Types of FPI
Communicable FPI
Fault occurs → LED flashes + GPS signal sent to SCADA → Exact location displayed on map → Crew dispatched with coordinates
Non-Communicable FPI
Fault occurs → LED flashes visibly → Technician sees LED → Crew dispatched
FPI Variants

Non-Communicable FPI

Communicable FPI

Applications
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Medium Voltage (MV) overhead feeders
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Urban and rural distribution networks
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Smart grid and automation systems
Features

Self-powered or battery operated

SMS reporting of events

Phase-to-phase and phase-to-earth fault identification capability

Visual Indication with ultra bright LED 360˚

Communicable over SCADA with 104 protocol & MQTT

IP68 Designed

24/7 line parameters monitoring and instant communication
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Specification | N-FPI | N-FPI | C-FPI | C-FPI |
|---|---|---|---|---|
Line Voltage | 11KV | 33 KV | 11KV | 33 KV |
Rated Current | 630 A | 800 A | 630 A | 800 A |
Short Time Withstand Current | 12.5 KA | 25 KA | 12.5 KA | 25 KA |
Protection Level | IP-67 | IP-67 | IP-66 | IP-66 |
Frequency | 50 | 50 | 50 | 50 |
Reset Time | Auto | Auto | Settable | Settable |
Weight | 360 gm | 550 gm | 360 gm | 550 gm |
Battery | 3.6v | 3.6v | 3.6v | 3.6v |
Operating Temperature | -25°c To 70c | -25°c To 70c | -25°c To 70c | -25°c To 70c |
Battery Operating Hours | 1000 Hrs | 1000 Hrs | 1000 Hrs | 1000 Hrs |
Communication | No | No | Yes | Yes |
Visibility Angle | 360° | 360° | 360° | 360° |
. Flash Period For Permanent Fault | 1 Flash Every 3 Sec | 1 Flash Every 3 Sec | 1 Flash Every 3 Sec | 1 Flash Every 3 Sec |
Flash Period For Transient Fault | 2 Flashes Every 3 Sec | 2 Flashes Every 3 Sec | 2 Flashes Every 3 Sec | 2 Flashes Every 3 Sec |
R.F. Range | No | No | 100m | 100m |
Light Intensity | 40 Lumens | 40 Lumens | 40 Lumens | 40 Lumens |
SMS Update | No | No | Yes | Yes |
USPs & Key Benefits
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Faster fault location
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SAIDI Improvement
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Lower O&M costs
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Scalable solution
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Reduced outage duration
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Improved safety
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Supports smart grid initiatives
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