SEL-787 Transformer Protection Relay

Apply advanced protection and monitoring to all two-winding transformer applications with flexible communications.

Protect and monitor most industrial transformer applications with the versatile SEL-787 Transformer Protection Relay. Apply 2 three-phase winding inputs, and an optional single-phase restricted earth fault input and three-phase voltage input. Benefits include advanced automation and flexibility, single or dual, copper or fiber Ethernet communications ports, asset management data, and easy retrofit of most electromechanical relays.

*Budgetary U.S. Retail, Quantity 1, Base Price = $2,950
Fully Optioned Price = $5,900
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-487E Transformer Protection Relay

Apply the SEL-487E for the most comprehensive protection, metering, monitoring, and automation of two- to five-winding transformers.

Protect and monitor most transformer applications with the powerful SEL-487E Transformer Protection Relay. Apply from 2 to 5 three-phase winding inputs, 3 single-phase restricted earth fault inputs, and 2 three-phase voltage inputs. In addition to enhanced protection security, benefits include advanced automation, complete local and remote bay control, new communications options, asset management data, and the first Commissioning Assistant Software that finds differential compensation settings errors and generates correct ones for you.

*Budgetary U.S. Retail, Quantity 1, Base Price = $6,750
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-387E Current Differential and Voltage Relay
Use the SEL-387E Relay to provide comprehensive protection, metering, monitoring, and automation for important transformers, reactors, and other power apparatus.

The SEL-387E provides protection of two or three winding power transformers. Voltage inputs for power metering, overexcitation protection, and over-/underfrequency load shedding provide versatile solutions for power apparatus protection. Automation features reduce total project construction and operation costs through elimination of traditional external control switches, meters, and indicating lamps.

*Budgetary U.S. Retail, Quantity 1, Base Price = $5,780
Fully Optioned Price = $8,463
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-387 Current Differential and Overcurrent Relay
Use the SEL-387 Relay for protection, monitoring, and automation applications for important transformers, generators, and other power apparatus.

Protection, control, and metering for transformers, machines, buses, breakers, and feeders. Features include four three-phase current inputs with independent restrained and unrestrained differential protection, programmable single- or dual slope differential characteristic, circuit breaker monitor, battery voltage monitor, and enhanced SELOGIC^® Control Equations.

*Budgetary U.S. Retail, Quantity 1, Base Price = $5,000
Fully Optioned Price = $6,280
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-387A Current Differential and Overcurrent Relay
Use the SEL-387A Relay for protection, monitoring, and automation applications for important transformers, generators, and other power apparatus.

The SEL-387A Relay offers restrained and unrestrained differential protection for two terminals. Second-, fourth-, and fifth-harmonic elements, augmented by the dc element, provide security during transformer energization and overexcitation conditions in a user-defined choice of either harmonic restraint or harmonic blocking. Overcurrent elements provide backup protection that contributes to the versatility of the SEL-387A.

*Budgetary U.S. Retail, Quantity 1, Base Price = $3,680
Fully Optioned Price = $5,523
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-587 Current Differential Relay
Provide inexpensive differential protection for two-winding transformers or other two-terminal apparatus.

The SEL-587 Current Differential/Overcurrent Relay provides protection for any two-input apparatus such as transformers, motors, generators, and reactors. Apply it for differential and overcurrent protection and use event reports for quick post-event analysis.

*Budgetary U.S. Retail, Quantity 1, Base Price = $2,080
Fully Optioned Price = $2,222
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-701-1
Implement Enhanced Substation Apparatus Monitor and Control.

Each individually programmable RTD has three alarm levels for enhanced thermal monitoring and control of critical substation apparatus.

*Budgetary U.S. Retail, Quantity 1, Base Price = $1,530
Fully Optioned Price = $2,370
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-487B Bus Protection Relay
Use the SEL-487B to provide sensitive, secure protection for all of your busbar differential applications.

The SEL-487B provides optomized bus differential fault detection by using high-speed, subcycle protection coupled with high security operation for external faults. Superior protection performance is coupled with integrated station automation features that allow customers to tailor the SEL-487B to work seamlessly in new and retrofit applications.

*Budgetary U.S. Retail, Quantity 1, Base Price = $6,830
Fully Optioned Price = $12,710
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-587Z High-Impedance Differential Relay
Apply the SEL-587Z Relay for single-zone bus protection, reactor protection, or sensitive restricted earth fault protection on grounded, wye-connected power transformer windings.

The SEL-587Z Relay is a flexible high-impedance differential relay that combines time-proven high-impedance analog technology with the advantages of microprocessor technology. Use event reports and Sequential Event Recorder (SER) for quick post-event analysis.

*Budgetary U.S. Retail, Quantity 1, Base Price = $3,940
Fully Optioned Price = $4,255
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-2100 Logic Processor
Create solutions with MIRRORED BITS^® communications and protection logic from SEL.

Implement low cost, high speed bus protection, automated bus sectionalizing, breaker failure protection, multiple terminal line protection, or other applications by interconnecting up to 15 devices using resident MIRRORED BITS communications.

*Budgetary U.S. Retail, Quantity 1, Base Price = $2,100
Fully Optioned Price = $2,835
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-451-4 Bay Control, Automation, and Protection System
Quickly integrate bay control status and control for breakers and disconnect switches with full automation and protection in one device.

With advanced synchrophasor measurement, the SEL-451-4 provides system stability awareness. Choose between Ethernet and serial communication ports with DNP3 and IEC 61850 protocols.

*Budgetary U.S. Retail, Quantity 1, Base Price = $4,410
Fully Optioned Price = $10,170
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-352 Breaker Failure Relay
Provide comprehensive protection and unparalleled flexibility for breaker failure applications using the SEL-352 Relay.

The SEL-352 relay provides breaker failure protection, breaker control, and breaker monitoring. Features include a cost-saving data recorder and a sophisticated controller to reduce maintenance and manual operations. SELOGIC^® Control Equations provide flexibility in applying the SEL-352 Relay for a variety of applications.

*Budgetary U.S. Retail, Quantity 1, Base Price = $3,570
Fully Optioned Price = $5,915
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-501 Dual Universal Overcurrent Relay
Simplify protection in two-high switchgear with two independent sets of protection elements in one compact relay.

The SEL-501 Dual Universal Overcurrent Relay is two complete sets of protection; both can be configured as one of five basic relays.

*Budgetary U.S. Retail, Quantity 1, Base Price = $1,000
Fully Optioned Price = $1,407
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-451 Protection, Automation, and Control System
Reduce Cost, Complexity and Maintenance of Power Systems with the SEL-451 Relay.

The new SEL-451 is a complete stand-alone protection, automation, and control system. The SEL-451 has speed, power, and flexibility to combine complete substation bay control with high-speed breaker protection in one economical system. Use the SEL-451 as an integral part of a full substation protection, control, and monitoring solution. Reduce Maintenance costs by accurately tracking breaker operation. Monitor breaker interruption times and accumulated breaker duty to easily determine the need for proactive maintenance. Integrate information with SCADA or automation systems though a communications processor or directly to the Ethernet port.

*Budgetary U.S. Retail, Quantity 1, Base Price = $4,200
Fully Optioned Price = $9,970
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-287V Voltage Differential and Control Relay
Protect and control grounded-wye capacitor banks.

Apply the popular SEL-287V Relay for protection and control of important shunt capacitor banks.

*Budgetary U.S. Retail, Quantity 1, Base Price = $3,150
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

Use the SEL-2126 Fiber-Optic Transfer Switch to Maintain Relay Communications During Bypass Operations

Switch several protection protocols simultaneously (MIRRORED BITS^® communications, line current-differential protection, etc.) communicating through fiber-optic links. The SEL-2126 is a high-speed communications device that senses contact inputs to route data streams between remote and local relays, or between the remote and one or two transfer relays.

*Budgetary U.S. Retail, Quantity 1, Base Price = $2,730
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-9510 Control Switch Module

The SEL-9510 Control Switch Module easily adds independent local control and indication to any installation.

Use the SEL-9510 everywhere independent local control is needed. High-visibility status indicators are viewable from almost any angle and at a distance. Field tested arcsuppression technology provides years of reliable service with less contact wear.

*Budgetary U.S. Retail, Quantity 1, Base Price = $300.
Fully Optioned Price: $365
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-2505 Remote I/O Module
Directly convert device inputs/outputs to MIRRORED BITS^® communications.

Reduce operating time, add self-testing, and simplify wiring for auxiliary inputs and outputs.

*Budgetary U.S. Retail, Quantity 1, Base Price = $525
Fully Optioned Price = $1,575
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-2600A RTD Module
Acquire and transmit Resistance Temperature Detector (RTD) thermal data from transformers, motors, generators, or other apparatus. Now with Best-in-Class electrical noise rejection!

The SEL-2600A RTD Module is a simple, robust device designed to accept inputs from industry standard RTDs. Measure and transmit temperature data from motors, generators, transformers, breakers, or other power system apparatus. Connects through optical fiber to SEL-300G, SEL-421, and SEL-701 Relays, SEL-701-1 Monitor, and SEL-2030 and SEL-2032 Communications Processors.

*Budgetary U.S. Retail, Quantity 1, Base Price = $790
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

SEL-2600D RTD Module
Acquire and transmit Resistance Temperature Detector (RTD) thermal data from transformers, motors, generators, or other apparatus. Now with Best-in-Class electrical noise rejection!

The SEL-2600D RTD Module is a simple, robust 125 v dc powered device designed to accept inputs from industry standard RTDs. Measure and transmit temperature data from motors, generators, transformers, breakers, or other power system apparatus. Connects through optical fiber to SEL-300G, SEL-421, and SEL-701 Relays, SEL-701-1 Monitor, and SEL-2030 and SEL-2032 Communications Processors.

*Budgetary U.S. Retail, Quantity 1, Base Price = $790
Contact your SEL sales representative today for a quote on the configuration and quantity needed for your application.

• SEL-2BFR