Products

SEL provides reliable finished (terminated) cables, built to IPC workmanship standards in our ISO 9001 certified plants – And, they are covered by our worldwide, ten-year warranty. A variety of standard and customized twisted pair and coaxial cables and connector combinations are available from SEL.

Overhead AutoRANGER Fault Indicators are self-adjusting fault indicators for overhead lines. You can apply the SEL-AR360 on distribution systems up to 35 kV and the SEL-AR on systems up to 69 kV for permanent and momentary fault indication using bright LEDs and flash patterns.

Safely connect your EIA-232 communications ports using SEL fiber-optic cable and SEL fiber-optic transceivers.

Apply the SEL-FLT and SEL-FLR Fault and Load Transmitter and Receiver System to improve distribution system reliability metrics and customer satisfaction. The SEL-FLT Fault and Load Transmitter operates using 900 MHz wireless sensors that continuously monitor the line for faults while providing load data with 2 percent accuracy to the SEL-FLR Fault and Load Receiver, with a range of up to 10 miles. Speed up system restoration by pinpointing faults and knowing where to send repair crews. Accurate and real-time load monitoring enables improved switching decisions, since operators confidently know which viable alternate feeders are available to pick up the impacted customers.

Apply the SEL-387A to protect any two-winding power transformer and perform predictive maintenance based on accumulated through-fault duty (as compared to transformer capability as defined in ANSI Standard C57.109).

Apply the SEL-401 for substations with IEC 61850-9-2 sampled values (SV) systems. Sample analog data, such as currents and voltages, then publish those data to a fiber-based Ethernet network for use in other IEDs such as compliant SEL-400-series relays.

The SEL-734 Meter exceeds ANSI and IEC Class 0.2 accuracy with four-quadrant energy and demand metering. Advanced load profile trending compatible with MV-90®, DNP3, and Modbus® protocols ensures integration with practically any billing system.

Use the SEL-749M to protect and control all types of three-phase motors, including two-speed and reduced-voltage start motors.

The SEL-849 provides current, voltage, and thermal-based protection, arc-flash detection, and power metering for motor protection applications.

SEL-2595 Teleprotection Terminal provides secure, high-speed contact transfer through communications multiplexers, using an IEEE C37.94 standard fiber-optic interface.

Communicate up to 23 kilometers with port-powered single-mode fiber-optic transceivers.

Adds Ethernet connectivity to an SEL device using its EIA-232 serial port.

Convert asynchronous EIA-232 serial communications interfaces to the IEEE C37.94 optical standard.

Isolate EIA-232 and IRIG-B signal lines to reduce signal-ground current induced by adjacent high-current conductors.

Carry an SEL-2924 for an always-secure wireless EIA-232 connection.

Avoid exposing personnel to hazardous conditions by enabling them to control and monitor equipment from their trucks or other safe locations.

The SEL-3031 combines three serial data ports in one radio, allowing up to three different connections and protocols to operate simultaneously. The radio transmits data in the license-free 900 MHz ISM band, providing an economical communications path and backup communications system.

Convert asynchronous EIA-232 serial communications interfaces to the IEEE C37.94 optical standard.

The SEL-3390E4 Network Adapter is a PCIe card designed to provide network expansion capabilities for SEL's flexible, robust computer line.

The SEL-3390S8 Serial Adapter is a PCIe expansion card designed to expand the serial I/O capabilities of SEL's flexible, robust computer line.

Adds dial-up access to devices in harsh utility and industrial environments.

Use one pair of fibers for full-duplex serial communications plus IRIG-B time synchronization.

Use station battery to power low-voltage communications and instrumentation devices.

Use station battery to power low-voltage communications and instrumentation devices.  Compatible with telecommunication battery backup including cell tower sites.

The SEL-9331 is a switch-regulated +12 Vdc power supply designed to supply power to SEL’s line of industrial computers. The SEL-9331 is also flexible enough to provide power for other equipment as well.

Decrease maintenance costs, increase contact reliability/dependability, and reduce destructive dc circuit overvoltages by applying the self-powered SEL-9501 Arc Suppressor to dc circuits.

Increase contact reliability and significantly reduce maintenance costs.

The SEL-9524 GNSS antenna for critical infrastructure applications is capable of receiving signals from both GPS and GLONASS satellite constellations. It is manufactured to be robust and reliable.

The SEL-9929 Kit is a ready-assembled kit consisting of the SEL-2401 Satellite-Synchronized Clock, the SEL-3401 Digital Clock Display, and all necessary accessories.