LINAM FLT and LINAM FLR

LINAM FLT and LINAM FLR

Fault and Load Transmitter and Receiver System

The LINAM FLT and LINAM FLR system improves the overall reliability of your distribution system through accurate fault indication and load monitoring. The system enables you to locate faults faster and make informed switching decisions. Restoring power quickly is essential to ensuring satisfied customers and better CAIDI reliability metrics. Locating momentary faults allows you to address system issues and improve MAIFI metrics. Highly accurate (1% typical) load data also enables phase balancing and system planning. The FLT Fault and Load Transmitter and the FLR Fault and Load Receiver work in combination using unlicensed 900 MHz wireless communications. Line powering, with as little as 3.5 A continuous current, reduces ongoing maintenance and allows you to use the FLT throughout your distribution system. FLR receivers are easy to integrate into existing systems with DNP3/IP output and comprehensive security. In addition, deploying the FLT and FLR system in pole-mount applications is quick and easy with the fully integrated enclosure option.

Starting at

LINAM FLT: $1,060 USD
LINAM FLR: $1,500 USD
LINAM FLR With Enclosure: $4,910 USD
View popular models

Improve Fault Location Throughout the Distribution System

Adding the FLT and FLR system provides more detail for momentary and permanent fault location on feeders, taps, and laterals to provide a more granular and extended view of the distribution system. With centralized fault information from the FLT and FLR system, utility operations teams can dispatch crews to more precise locations, speeding up restoration. Bright LEDs on the FLT provide local identification for line crews confirming the fault indication reported through the SCADA system or outage management system (OMS).

Use Load Data to Improve Operations

Highly accurate (1% typical) and timely load data (as fast as 5-minute intervals) from FLT transmitters on feeders, taps, and laterals enables better decision-making in emergency switching situations. Load data is also essential for phase balancing, system planning, and identifying potential power theft.

Speed Up Deployment in Pole-Mount Applications

The fully integrated FLR enclosure with built-in mounting bracket makes it quick and easy to deploy the system in pole-mount applications. It contains an FLR, an uninterruptible power supply, and other related equipment to provide connectivity with FLT transmitters and comes prewired with connections for power, communications, and antenna circuits. The front-facing Ethernet jack panel in the enclosure provides ease of access for setup. An SEL-3061 Cellular Router can be pre-installed to provide secure communications over public cellular networks to SCADA, or you can self-install your own backhaul radio. The enclosure also includes DIN-rail space for mounting additional hardware, such as the SEL-3505-3 Real-Time Automation Controller (RTAC) for local automation schemes.

Updates

LINAM FLR With Enclosure

The new enclosure option for the LINAM FLR is pre-wired and fully integrated for quick deployment in pole-mount applications. Have an SEL-3061 Cellular Router pre-installed for secure communications over public cellular networks (AT&T, T-Mobile, Verizon, and Rogers) to SCADA, or self-install your own backhaul radio.
Related Materials

Solutions

Fault Indicators and Sensors

Webinar

Improve System Visibility and Reliability With the SEL Wireless Fault Indication System

Video

How to Set LINAM FLT/FLR Fault and Load Transmitter and Receiver System

LINAM FLT and LINAM FLR Features

FLR__ENCLOSURE_2026_LINAM_v2.jpg
1
2
3
4
5
6
7
8
9
10
11
  1. Fiberglass enclosure
  2. Built-in mounting bracket for quick deployment on distribution poles
  3. Optional SEL-3061 Cellular Router for secure communications over public cellular networks to SCADA
  4. Four front-facing Ethernet ports for ease of access during setup
  5. FLR collects fault, load, and heartbeat information from FLT transmitters
  6. Power supply
  7. DIN-rail space to self-install an SEL-3505-3 Real-Time Automation Controller for local automation schemes (ordered separately)
  8. Fused ac power input
  9. Uninterruptible power supply
  10. Backup battery for ride-through during distribution system reconfiguration events and to ensure fault indication messages are sent during permanent outages
  11. Three surge-arrested external antenna ports: one for an FLR antenna and two for backhaul radio antennas
front flr_2026_LINAM.jpg
1
2
3
4
5
6
  1. System status
  2. Ethernet communications status display
  3. Serial communications status display
  4. Radio status display
  5. Front-facing Ethernet port
  6. Reset button
back flr.jpg
1
2
3
4
5
6
  1. Ethernet ports
  2. 900 MHz antenna port
  3. Grounding terminal
  4. 12–24 V power input
  5. Alarm 01, 02
  6. Reserved for future use
FLT Transmitter_2026_LINAM.jpg
1
2
3
4
  1. Spring-loaded clamp with 6.4–38.1 mm (0.25-1.5 in) range
  2. Bright 360° LED display
  3. 900 MHz radio
  4. Clamp lock

LINAM FLT and LINAM FLR  Details

Accurately Indicate Faults and Monitor Load
When a fault occurs, the FLT wirelessly transmits a fault or outage status to an FLR. The FLR receives the fault and load status from several FLT transmitters located within the receiver's line of sight. It then passes the sensor data through a wired or wireless network to the central SCADA master via the DNP3 protocol. Improve Reliability Metrics and Planning
With a unique and powerful combination of capabilities, the FLT and FLR system provides a cost-effective way to integrate wireless fault indication and load data into centralized SCADA systems, allowing for better CAIDI and MAIFI metrics, proactive planning, and more informed switching decisions. Reduce Operation and Maintenance Costs
Line-powered FLT transmitters remove the need for battery replacement programs, and autoranging eliminates manual configuration of trip thresholds. FLR receivers can be tied into existing networks with no extra software to purchase. Simplify Deployment
FLT transmitters can be installed with a single hotstick. Using standard DNP3/IP output, FLR receivers integrate easily into Ethernet networks. With the FLR enclosure option, deploying the system in pole-mount applications is quick and easy, too. All configuration and troubleshooting for the FLT and FLR system is performed through the FLR web interface. Trust the Strong Built-In Security
Wireless communications are protected with 128-bit encryption as well as message and device authentication. Users are authorized using role-based access, and unused Ethernet ports can be locked down. If security events occur, the FLR logs all events locally and can send alerts to syslog destinations. Develop a Deployment Plan With a Wireless Area Coverage Overview
SEL provides a wireless path overview for the planned use of an FLT and FLR system. Customers provide information for the FLR and FLT locations, and the overview estimates the viability of the wireless links. SEL offers a free overview for up to five FLT transmitters and offers complete system path overviews for a fee through SEL Engineering Services. Countries
The FLT and FLR system is approved for use by the governments of the following countries:
  • Argentina
  • Bermuda
  • Brazil
  • Canada
  • Cayman Islands
  • Costa Rica
  • Ecuador
  • Mexico
  • Panama
  • Peru
  • United States
The FLR enclosure is approved for use in the United States and Canada.
LINAM FLR With Enclosure Options
  • SEL-3061 Cellular Router for AT&T, T-Mobile, or Rogers wireless networks
  • SEL-3061 Cellular Router for Verizon wireless networks
  • Low-profile omnidirectional antenna(s) with mounting bracket and 6 ft (1.8 m) antenna cable(s)
Substation Installation Accessories
  • SEL-C968-75 Low-Loss LMR-400 N-to-N Connector, 50 ohm, 75 ft*
  • SEL-C964-25 RG-8X TNC-to-N Connector, 50 ohm, 25 ft*
  • 200-2004 Radio Surge Protector With N Connectors
  • SEL 235-0233 9.15 dBi Omnidirectional Antenna
  • 240-0106 Mast Mount for Omnidirectional Antennas
Cabinet Installation Accessories
  • SEL-C968-30 Low-Loss LMR-400 N-to-N Connector, 50 ohm, 30 ft*
  • SEL-C964-5 RG-8X TNC-to-N Connector, 50 ohm, 5 ft*
  • 200-2004 Radio Surge Protector With N Connectors
  • SEL 235-0232 7.15 dBi Omnidirectional Antenna
  • 240-0103 Vertical Omnidirectional Antenna Mount for up to 14" Diameter Pole
*Cable length may vary. Some configurations, such as those with an LED or timed-reset feature, may contain a battery. For configurations with a battery, please see the lithium metal battery warning.

How to Set LINAM FLT/FLR Fault and Load Transmitter and Receiver System

LINAM FLT and LINAM FLR System Setup

Instruction Manuals