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Category
AG2023-05
Using SEL BaRT to Back Up and Restore SEL Computers
This application guide describes how to use the SEL Backup and Recovery Tool (BaRT) to back up and recover the operating system (OS) and application data stored on an SEL computer.
- Huba Leidenfrost
- Ian Olson
Metering Solutions
Unmatched accuracy, power quality recording, and value with SEL meters.
Reset SEL-710 Trip Targets Following a Normal Stop
Application Guide - This application guide describes the automatic clearing of the front-panel target LEDs following a normal stop.
- Matt Leoni
Applying SEL-311L Relays on 120- to 240-Kilometer Lines
Application Guide - The SEL-311L Line Current Differential System is a digital line current differential relay with an integrated communications interface. A typical two-terminal line application consists of two SEL-311L Relays. Direct communication between the relays is performed through a fiber-optic cable at a distance of up to 120 kilometers. When this distance is longer than 120 kilometers, a third SEL-311L may be used as a pseudo repeater. This can extend the application of direct fiberoptic cable to lines up to 240 kilometers long.
- Alex Rangel
- David Costello
Category
Document Type
Education Type
Using SEL BaRT to Back Up and Restore SEL Computers
This application guide describes how to use the SEL Backup and Recovery Tool (BaRT) to back up and recover the operating system (OS) and application data stored on an SEL computer.
- Huba Leidenfrost
- Ian Olson
Reset SEL-710 Trip Targets Following a Normal Stop
Application Guide - This application guide describes the automatic clearing of the front-panel target LEDs following a normal stop.
- Matt Leoni
Applying SEL-311L Relays on 120- to 240-Kilometer Lines
Application Guide - The SEL-311L Line Current Differential System is a digital line current differential relay with an integrated communications interface. A typical two-terminal line application consists of two SEL-311L Relays. Direct communication between the relays is performed through a fiber-optic cable at a distance of up to 120 kilometers. When this distance is longer than 120 kilometers, a third SEL-311L may be used as a pseudo repeater. This can extend the application of direct fiberoptic cable to lines up to 240 kilometers long.
- Alex Rangel
- David Costello
Vacuum Bottle Contact Flashover and Failure to Interrupt Load Current Detection Logic in the SEL-351R Recloser Control
Application Guide - Vacuum bottle interrupters are known to lose vacuum. If a vacuum bottle that has lost vacuum is opened to interrupt current, the vacuum bottle will likely fail violently. This violent failure may cause damage to nearby equipment and poses a safety hazard to those working in the area. This application guide describes logic that can be written in the SEL-351R Recloser Control to recognize this failure and open an upstream interrupting device.
- Mike Merow
Using Wireshark to Troubleshoot Protocol Communications Issues on an RTAC
Application Guide - With the SEL-3530 Real-Time Automation Controller (RTAC), a wide variety of communications schemes can be integrated into an industrial automation network, including some that were not possible with the SEL-2030 and SEL-2032 Communications Processors.
- Chris Bontje
SEL Fiber-Optic Device Compatibility Guide
Application guide - SEL manufactures many devices with standard or optional fiber-optic communications ports. This application guide summarizes information in tables to guide readers in determining the compatible SEL fiber-optic cables and interoperable devices.
- Gary W. Scheer
Using an Offline Software Tool for Fault Location Estimation
Application guide - This application guide describes how to calculate fault locations using voltages and currents from all line terminals and a Microsoft® Excel® spreadsheet that is available for download with thisapplication guide at http://www.selinc.com. This method is more accurate than the single-ended method as long as the data are stable.
- Alex Rangel
Setting a Two-Terminal SEL-311L Relay Application With Different Nominal Currents
This application guide demonstrates how to set a relay used in an application where the relays do not have the same nominal current. This application guide demonstrates how to perform the correct adjustments in the CTR_X, 87LPP, 87L2P, and 87LGP settings to compensate for the nominal current mismatch between a 5 A nominal current relay and a 1 A nominal current relay.
- Alex Rangel
- David Costello
Improving SEL-710 Output Logic When Circuit Breakers or Lockout Relays Are Used
Application Guide - This application guide explores enhancements for applications that use circuit breakers and lockout relays. Specifically, it addresses how to reconfigure the output contacts to distinguish between normal stop and protection scheme trip conditions.
- Matt Leoni
Setting and Testing a Two-Terminal SEL-311L Application With Different CT Ratios
Application Guide - The SEL-311L Line Current Differential System is a digital line current differential relay with an integrated communications interface. The SEL-311L-1,-7 Instruction Manual, available at http://www.selinc.com, demonstrates how to set and test an application consisting of two SEL-311L Relays protecting a line when each relay receives current from a current transformer (CT) with the same CT ratio (CTR). However, when the CTRs do not match, setting and testing the application are more complex. This application guide explains the issues that arise during this type of scenario, as well as how to compensate for them in settings and testing procedures.
- Alex Rangel
- David Costello