Schweitzer Engineering Laboratory
Pullman, WA 99163
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SEL-751 Feeder Protection Relays offer easy monitoring and controlling option.
Designed for directional overcurrent, fault location, arc-flash detection and high- impedance fault detection applications, SEL-751 Feeder Protection Relay features 5 in., 800 x 480-pixel color touchscreen display. Supporting Spanish and English languages, unit’s touchscreen displays metered quantities, phasor diagrams, relay settings, event summaries and SER data. Relays provide protection...
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SEL-751 Feeder Protection Relays offer easy monitoring and controlling option.
Designed for directional overcurrent, fault location, arc-flash detection and high- impedance fault detection applications, SEL-751 Feeder Protection Relay features 5 in., 800 x 480-pixel color touchscreen display. Supporting Spanish and English languages, unit’s touchscreen displays metered quantities, phasor diagrams, relay settings, event summaries and SER data. Relays provide protection...
Read More »
Fault Transmitter and Receiver Systems offer protection to distribution systems.
Available in SEL-FT50 transmitter and SEL-FR12 receiver models, Fault Transmitter and Receiver Systems eliminate unnecessary coordination delays. SEL-FT50 transmitter is installed on laterals, branches and main lines for broadcasting fault statuses via 860 or 900 MHz radio to receiver system. System consists of 12 line-powered SEL‑FT50 transmitters and 1 SEL-FR12 receiver that communicate fault...
Read More »
Fault Transmitter and Receiver Systems offer protection to distribution systems.
Available in SEL-FT50 transmitter and SEL-FR12 receiver models, Fault Transmitter and Receiver Systems eliminate unnecessary coordination delays. SEL-FT50 transmitter is installed on laterals, branches and main lines for broadcasting fault statuses via 860 or 900 MHz radio to receiver system. System consists of 12 line-powered SEL‑FT50 transmitters and 1 SEL-FR12 receiver that communicate fault...
Read More »
SEL-T400L Time-Domain Line Relay is based on traveling-wave microprocessor.
Capable of detecting power system faults, SEL-T400L Time-Domain Line Relay sends trip signal to circuit breakers at 4 to 10 times faster than phasor-based relays. Relay uses combination of traveling wave and incremental quantity protection technologies. Unit trips at a speed of millisecond for improved system stability and power quality.
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SEL-T400L Time-Domain Line Relay is based on traveling-wave microprocessor.
Capable of detecting power system faults, SEL-T400L Time-Domain Line Relay sends trip signal to circuit breakers at 4 to 10 times faster than phasor-based relays. Relay uses combination of traveling wave and incremental quantity protection technologies. Unit trips at a speed of millisecond for improved system stability and power quality.
Read More »
SEL-8301 Underground Distribution Sensor determines fault type.
Ideal for underground vaults and pad-mounted switchgear, SEL-8301 Underground Distribution Sensor withstands harsh environments including submersion in water up to 15 feet. Enabling connection of 12 CTs, device monitors up to four three-phase circuits. With line current measurement accuracy of 1.5 percent, unit reads load data every 15 minutes. Using wireless Ingenu/Trilliant RPMA network, sensor...
Read More »
SEL-8301 Underground Distribution Sensor determines fault type.
Ideal for underground vaults and pad-mounted switchgear, SEL-8301 Underground Distribution Sensor withstands harsh environments including submersion in water up to 15 feet. Enabling connection of 12 CTs, device monitors up to four three-phase circuits. With line current measurement accuracy of 1.5 percent, unit reads load data every 15 minutes. Using wireless Ingenu/Trilliant RPMA network, sensor...
Read More »
Industrial Computer operates with no fans or forced airflow.
Based on Intel-® Core™ i7 processor, Model SEL-3360E supports RAID configurations and uses single-level cell NAND flash memory. Up to 16 GB of error-correcting code RAM provides ample memory for demanding applications. In addition, unit incorporates 2 PCI expansion slots to enable I/O customization. Operating in environments from -40 to +140°F with no fans or forced airflow, computer is...
Read More »
Industrial Computer operates with no fans or forced airflow.
Based on Intel-® Core™ i7 processor, Model SEL-3360E supports RAID configurations and uses single-level cell NAND flash memory. Up to 16 GB of error-correcting code RAM provides ample memory for demanding applications. In addition, unit incorporates 2 PCI expansion slots to enable I/O customization. Operating in environments from -40 to +140°F with no fans or forced airflow, computer is...
Read More »
SEL-751 Feeder Protection Relays offer easy monitoring and controlling option.
Designed for directional overcurrent, fault location, arc-flash detection and high- impedance fault detection applications, SEL-751 Feeder Protection Relay features 5 in., 800 x 480-pixel color touchscreen display. Supporting Spanish and English languages, unit’s touchscreen displays metered quantities, phasor diagrams, relay settings, event summaries and SER data. Relays provide protection...
Read More »
SEL-751 Feeder Protection Relays offer easy monitoring and controlling option.
Designed for directional overcurrent, fault location, arc-flash detection and high- impedance fault detection applications, SEL-751 Feeder Protection Relay features 5 in., 800 x 480-pixel color touchscreen display. Supporting Spanish and English languages, unit’s touchscreen displays metered quantities, phasor diagrams, relay settings, event summaries and SER data. Relays provide protection...
Read More »
Fault Transmitter and Receiver Systems offer protection to distribution systems.
Available in SEL-FT50 transmitter and SEL-FR12 receiver models, Fault Transmitter and Receiver Systems eliminate unnecessary coordination delays. SEL-FT50 transmitter is installed on laterals, branches and main lines for broadcasting fault statuses via 860 or 900 MHz radio to receiver system. System consists of 12 line-powered SEL‑FT50 transmitters and 1 SEL-FR12 receiver that communicate fault...
Read More »
Fault Transmitter and Receiver Systems offer protection to distribution systems.
Available in SEL-FT50 transmitter and SEL-FR12 receiver models, Fault Transmitter and Receiver Systems eliminate unnecessary coordination delays. SEL-FT50 transmitter is installed on laterals, branches and main lines for broadcasting fault statuses via 860 or 900 MHz radio to receiver system. System consists of 12 line-powered SEL‑FT50 transmitters and 1 SEL-FR12 receiver that communicate fault...
Read More »
SEL-T400L Time-Domain Line Relay is based on traveling-wave microprocessor.
Capable of detecting power system faults, SEL-T400L Time-Domain Line Relay sends trip signal to circuit breakers at 4 to 10 times faster than phasor-based relays. Relay uses combination of traveling wave and incremental quantity protection technologies. Unit trips at a speed of millisecond for improved system stability and power quality.
Read More »
SEL-T400L Time-Domain Line Relay is based on traveling-wave microprocessor.
Capable of detecting power system faults, SEL-T400L Time-Domain Line Relay sends trip signal to circuit breakers at 4 to 10 times faster than phasor-based relays. Relay uses combination of traveling wave and incremental quantity protection technologies. Unit trips at a speed of millisecond for improved system stability and power quality.
Read More »
SEL-8301 Underground Distribution Sensor determines fault type.
Ideal for underground vaults and pad-mounted switchgear, SEL-8301 Underground Distribution Sensor withstands harsh environments including submersion in water up to 15 feet. Enabling connection of 12 CTs, device monitors up to four three-phase circuits. With line current measurement accuracy of 1.5 percent, unit reads load data every 15 minutes. Using wireless Ingenu/Trilliant RPMA network, sensor...
Read More »
SEL-8301 Underground Distribution Sensor determines fault type.
Ideal for underground vaults and pad-mounted switchgear, SEL-8301 Underground Distribution Sensor withstands harsh environments including submersion in water up to 15 feet. Enabling connection of 12 CTs, device monitors up to four three-phase circuits. With line current measurement accuracy of 1.5 percent, unit reads load data every 15 minutes. Using wireless Ingenu/Trilliant RPMA network, sensor...
Read More »
Industrial Computer operates with no fans or forced airflow.
Based on Intel-® Core™ i7 processor, Model SEL-3360E supports RAID configurations and uses single-level cell NAND flash memory. Up to 16 GB of error-correcting code RAM provides ample memory for demanding applications. In addition, unit incorporates 2 PCI expansion slots to enable I/O customization. Operating in environments from -40 to +140°F with no fans or forced airflow, computer is...
Read More »
Industrial Computer operates with no fans or forced airflow.
Based on Intel-® Core™ i7 processor, Model SEL-3360E supports RAID configurations and uses single-level cell NAND flash memory. Up to 16 GB of error-correcting code RAM provides ample memory for demanding applications. In addition, unit incorporates 2 PCI expansion slots to enable I/O customization. Operating in environments from -40 to +140°F with no fans or forced airflow, computer is...
Read More »