Sel787 transformer protection relay schweitzer engineering. Nov 12, 2018 functions in the sel 787, including harmonics, power, phase voltages and currents, neutral currents, and sequence voltages and currents. Aug 15, 2017 sel 787 data sheet schweitzer engineering laboratories, inc. Record and accumulate throughfault duty for use in selogic control equations or manual monitoring. Sel487b bus differential and breaker failure relay. Calculate the including the protection elements and basic functions, control io logic, as settings for your application to ensure well as the settings that control the communications ports and frontpanel secure and dependable protection. View online or download sel sel787 instruction manual. Aug 12, 2015 highimpedance bus protection use the highimpedance elements 87a1, 87b1, and 87c1 for instantaneous highimpedance bus protection. Sel787234 transformer protection relay documentation. Calculate the including the protection elements and basic functions, control io logic, as settings for your application to ensure well as the settings that control the communications. Undetectable permanent damage can result if you do not use proper esd procedures.
There are two slave devicessel787 from which i should read data via modbus rtu. The sel 787 includes a complete set of phase, negativesequence, and. Sel787 transformer protection relay data sheet schweitzer. The sel 787 2e212x models offer twowinding differential protection, and the. Apr 03, 2019 sel421 protection, automation, and control system combine subcycle line protection with complete substation bay control subcycle distance protection minimizes damage and expensive. Instruction manual sel sel787 instruction manual 612 pages. Opc certification requires extensive testing to ensure true interoperability. Use the sel787 with optional voltage inputs to provide voltshertz protection with frequency.
Sel787 transformer protection relay instruction manual. The first milestone is to research more about the sel787 to learn how to install the relay for operation. Use the highimpedance fault hif detection element to operate for small current ground faults typically resulting from downed cond uctors on ground surfaces such as. Benefits include advanced automation and flexibility. Aug 09, 2019 schweitzer engineering laboratories, inc. The sel 787 transformer protection relay provides unsurpassed protection, integration, and control features in a flexible, compact, and costeffective packag e. View and download sel 787 instruction manual online. Finally, the slope percentage will be calculated to address the differential ct mismatch between the primary and secondary sides of the power transformers 12. Acselerator quickset user manual murdoch university. Rs422485 rk512, ascii, 3964r, loadable driver should we change order to. In this document, sel 787 refers to all the models in table 1. Each sel 787 is shipped with this section describes the sel 787 transformer protection relay settings, default factory settings. Date code 20150 instruction manual sel787 relay list of tables instruction manual table 1. The sel 787 transformer protection relay is a versatile, twowinding current differential relay that.
Sel787 relay transformer protection relay short file name schweitzer engineering laboratories. Protection features order the 9u chassis version of the sel 487b to equip the relay with a maximum of four interface boards. Featured instruction manual data sheet flyer touchscreen white paper literature. Date codes are changed only on pages that have been revised and any following pages affected by the revisions i. The relay will be tested to ensure correct metering operation. Sel 787 234 is atexcertified and underwriters laboratories ul class i, division 2certified for use in hazardous and potentially explosive environments. Mar 07, 2001 sel3515, 6, 7 instruction manual sel3515, 6, 7 instruction manual table of contents section 1. Sel587 current differential relay online library of manuals. Sel 787 instruction manual pdf download manualslib. Sep 21, 2018 sel 787 234 is atexcertified and underwriters laboratories ul class i, division 2certified for use in hazardous and potentially explosive environments. The sel 787 withstands vibration, electrical surges, fast transients, and extreme temperatures, meeting stringent industry standards. Sel 387e data sheet versatile solution for power apparatus protection key features and benefits the sel 387e relay includes threephase voltage inputs for metering, overexcitation, frequency, and over and under.
Use the sel787 with optional voltage inputs to provide voltshertz protection with. Schweitzer engineering laboratories sel787 instruction manual. Figure 3 contains the settings editor for the sel 787 relay while figure 4 provides a comparison of the differences in the configuration options between the sel 421 and. Protection settings calculations for power transformers. Pdf sel787 transformer protection relay major features and. The omicron control center occ allows the option to individually combine testing functions into an overall test plan. We have 1 sel sel787 manual available for free pdf download. The sel787 transformer protection relay is a versatile, twowinding current differential relay that protects industrial transformers. Opc certification is the process of ensuring that applications meet the standards specified by the opc foundation. Opc certification means multivendor system interoperability is guaranteed. Sel 751 data sheet schweitzer engineering laboratories, inc. Sel700 series industrial configurable labels instructions. Each sel787 is shipped with this section describes the sel787 transformer protection relay settings, default factory settings.
Sel787 transformer protection relay short file name schweitzer engineering laboratories sel protection relay library record number. This product is covered by the standard sel 10year warranty. Apply 2 threephase winding inputs, and an optional singlephase restricted earth fault input and threephase voltage inputs for comprehensive transformer protection. Sel587z instruction manual date code 20020903 caution. Power tranformer protection a project presented to the. Optional singlephase voltage input for synchronism check or station battery monitor. Sel 587 data sheet schweitzer engineering laboratories 6 operation, metering, control, and reporting apply this relay to protect any twowinding power transformer threewinding power transformers where the ter. The iiste is a pioneer in the openaccess hosting service and academic event management.
Shawn wasielewski lead commissioning engineer fluence. Sel 751a data sheet schweitzer engineering laboratories, inc. The aim of the firm is accelerating global knowledge sharing. A diagram for a fourwire wye connection is also available in the instruction manual. Control system integration electrical controls benfield. I checked sel787 manual and it says it supports eia 232, but my collegue order 6s7 3411ch000ae0 communication processor with connection. Opc server for schweitzer engineering laboratories sel787. The opc server for schweitzer engineering laboratories sel 787 is opc certified.
Sel 787 transformer protection relay protect and monitor most industrial transformer applications with the versatile sel 787 transformer protection relay. Use the sel 787 with optional voltage inputs to provide voltshertz protection with frequency. With four interface boards, the relay has a total of 103 inputs 72 common inputs and 31 independent inputs and 40 outputs 24 highspeed, highcurrent interrupting outputs and 16 standard outputs. Sel 787 control logic improves integration in the eliminates rtutorelay wiring. The settings editor is the primary programing environment for the relays, where the structure of the dropdown menu is designed specifically for the connected or designed relay. Select the sel 787 4x for currentbased fourwinding differential protection. Learn how to establish communications with the sel 751 feeder protection relay. This task requires using the instruction manual to learn how to power the relay and setup communications with the relay using acselerator quickset. Solid state or microprocessor based relays are generally equipped with a large variable of settings and curve options and some electromechanical relays provide for adjustable calibrated settings.
In the w n ctc matrix notation, the columns represent iaw n, ibw n, and icw n, left to right, and the rows represent differential elements 871, 872, and 873, top to bottom. Test universe enables a variety of test approaches, from manual to fully automated and standardized tests, running on a pc or laptop. Pdf sel protection and monitoring system semantic scholar. Sntp ethernetbased protocol that provides time synchronization of the relay. Localremote operator controls employ eight programmable frontpanel pushbuttons, each with two programmable tricolor leds, for a wide variety of uses, including easy tripclose control and status indication. The sel 787 offers an extensive variety of protection features, depending on the model and options selected. Monitor transformer health with cumulative throughfault current recording, and for the first time in the industry, automatically check and generate differential compensation settings with the commissioning assistant software.
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