Protection Relays

PNM Becomes First Utility Worldwide to Deploy Industry-Leading Technology to Benefit Customers
Protection Relays

PNM Becomes First Utility Worldwide to Deploy Industry-Leading Technology to Benefit Customers

Albuquerque, N.M., Dec. 26, 2018 /PRNewswire/ -- PNM, the wholly-owned New Mexico utility subsidiary of PNM Resources (NYSE: PNM), has become the first utility worldwide to implement leading-edge technology on its high-voltage transmission lines. A new type of protective relay, developed by Schweitzer Engineering Laboratories (SEL), provides significant enhancements to the reliability and...

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PNM Becomes First Utility Worldwide to Deploy Industry-Leading Technology to Benefit Customers
Protection Relays

PNM Becomes First Utility Worldwide to Deploy Industry-Leading Technology to Benefit Customers

Albuquerque, N.M., Dec. 26, 2018 /PRNewswire/ -- PNM, the wholly-owned New Mexico utility subsidiary of PNM Resources (NYSE: PNM), has become the first utility worldwide to implement leading-edge technology on its high-voltage transmission lines. A new type of protective relay, developed by Schweitzer Engineering Laboratories (SEL), provides significant enhancements to the reliability and...

Read More »
Voltage Motor Thermistor Relay provides a reaction time of less than 500 ms.
Protection Relays

Voltage Motor Thermistor Relay provides a reaction time of less than 500 ms.

Used for protecting electric motors from overheating, DTA04 Voltage Motor Thermistor Relay features 22.5 mm wide DIN rail mount housing. Unit provides two normally open relay outputs NEMA B300 8A at 250 VAC. Operated from 24 to 240V AC/DC supply, unit comes with LED indicates alarm trigger and offers manual or auto reset option. Relays are compliant to UL 508, CSA C22.2 and EN 60255-6 standards.

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Voltage Motor Thermistor Relay provides a reaction time of less than 500 ms.
Protection Relays

Voltage Motor Thermistor Relay provides a reaction time of less than 500 ms.

Used for protecting electric motors from overheating, DTA04 Voltage Motor Thermistor Relay features 22.5 mm wide DIN rail mount housing. Unit provides two normally open relay outputs NEMA B300 8A at 250 VAC. Operated from 24 to 240V AC/DC supply, unit comes with LED indicates alarm trigger and offers manual or auto reset option. Relays are compliant to UL 508, CSA C22.2 and EN 60255-6 standards.

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Three Phase Monitoring Relays feature built-in switch mode power supply.
Protection Relays

Three Phase Monitoring Relays feature built-in switch mode power supply.

Three Phase Monitoring Relays are offered in DPA52 and DPB52 models. Offering critical protection against phase loss and improper phase sequence, these relays comes with multi-color LED indicators and relay contact output. Operated in 45 to 65Hz frequency and 125VLL to 624VLL voltage, units come in 17.5mm wide DIN rail mounting and meet UL 508, CSA C22.2 and EN 60947-5-1 standards. DPB52 relay...

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Three Phase Monitoring Relays feature built-in switch mode power supply.
Protection Relays

Three Phase Monitoring Relays feature built-in switch mode power supply.

Three Phase Monitoring Relays are offered in DPA52 and DPB52 models. Offering critical protection against phase loss and improper phase sequence, these relays comes with multi-color LED indicators and relay contact output. Operated in 45 to 65Hz frequency and 125VLL to 624VLL voltage, units come in 17.5mm wide DIN rail mounting and meet UL 508, CSA C22.2 and EN 60947-5-1 standards. DPB52 relay...

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SEL-751 Feeder Protection Relays offer easy monitoring and controlling option.
Protection Relays

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.
Protection Relays

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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Thermistor Relays protect motors against overheating.
Protection Relays

Thermistor Relays protect motors against overheating.

Supplied in enclosures with widths of 17.5 and 22.5 mm, Sirius 3RN2 Series requires minimal space in control cabinet. PTC temperature sensors are integrated into motor windings to measure temperatures at points at risk of overheating within motor. Certified for Atex and SIL 1 according to EN 50495, relays are suited for centrifuges, braking procedures, frequent switching, and where there is risk...

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Thermistor Relays protect motors against overheating.
Protection Relays

Thermistor Relays protect motors against overheating.

Supplied in enclosures with widths of 17.5 and 22.5 mm, Sirius 3RN2 Series requires minimal space in control cabinet. PTC temperature sensors are integrated into motor windings to measure temperatures at points at risk of overheating within motor. Certified for Atex and SIL 1 according to EN 50495, relays are suited for centrifuges, braking procedures, frequent switching, and where there is risk...

Read More »

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