Schweitzer Engineering Laboratories SEL-701 - Introduction

Date Code 20010719 701 Motor Protection Relay
List of Equations
Section 1: Introduction & Specifications
Section 2: Installation
Section 3: SEL-701PC Software
Section 4: Settings Calculation
Equation 4.1 ....................................................................................................4.22
Equation 4.2 ....................................................................................................4.27
Equation 4.3 ....................................................................................................4.28
Equation 4.4 ....................................................................................................4.34
Section 5: Front-Panel Operation
Section 6: ASCII Serial Port Operation
Section 7: Commissioning
Section 8: Metering & Monitoring
Section 9: Event Analysis
Section 10: Maintenance & Troubleshooting
Appendix A: Firmware Versions
Appendix B: SEL
OGIC
®
Control Equations & Relay Logic
Equation B.1 .................................................................................................... B.9
Equation B.2 .................................................................................................. B.10
Equation B.3 .................................................................................................. B.10
Equation B.4 .................................................................................................. B.11
Equation B.5 .................................................................................................. B.24
Appendix C: Modbus
®
RTU Communications Protocol
Appendix D: SEL-2020/2030 & SEL-701PC Compatibility Features
Appendix E: Motor Thermal Element
Equation E.6..................................................................................................... E.5
Equation E.7..................................................................................................... E.6
Equation E.8..................................................................................................... E.6
Equation E.9..................................................................................................... E.7
Equation E.10................................................................................................... E.7
Equation E.11................................................................................................... E.7
Equation E.12................................................................................................... E.7
Equation E.13................................................................................................. E.10
Equation E.14................................................................................................. E.12
Appendix F: SEL-701 Relay Settings Sheets