Schweitzer Engineering Laboratories SEL-701 Manuale utente

Schweitzer Engineering Laboratories, Inc.

2350 NE Hopkins Court

Pullman, WA USA 99163-5603

Tel: (509) 332-1890 FAX: (509) 332-7990

SEL-701

Motor Protection Relay

Instruction Manual

DANGER: Contact with instrument

terminals may cause electrical shock

which can result in injury or death.

!DANGER: Tout contact avec les

bornes de raccordement de l’appareil

peut causer un choc électrique pouvant

entraîner des blessures ou la mort.

DANGER: Contact with this circuitry

may cause electrical shock that can

result in injury or death.

!DANGER: Tout contact avec ce circuit

peut être la cause d’un choc électrique

pouvant entraîner des blessuers ou la

mort.

WARNING: Overtightening the

mounting nuts may permanently

damage the relay chassis.

!ATTENTION: Une pression excessive

sur les écroux de montage peut

endommager de façon permanente le

chassis du relais.

WARNING: Be sure to carefully align

the front panel with the relay chassis

during reassembly. If the front panel is

not well aligned with the chassis, you

may bend connector pins, causing the

relay to fail.

!ATTENTION: Assurez-vous d'aligner

soigneusement le panneau frontal avec

le châssis du relais en cours de

remontage. Si le panneau du relais

n'était pas bien aligné avec le châssis,

vous pourriez plier les broches du

connecteur, entraînant une panne du

relais.

!CAUTION: Do not connect external

voltages to the relay contact inputs.

Because the contact inputs are

internally wetted, permanent damage

to the relay or external equipment may

result from connecting external voltage

to a relay contact input.

ATTENTION: Ne pas raccorder de

tensions externes sur les bornes des

entrées de contact. Parce que les

contacts sont trempés au mercure, des

dommages permanents peuvent

résulter pour le relais ou l’équipement

externe à la suite du raccordement

d’une tension externe à une entrée de

contact du relais.

CAUTION: The relay contains devices

sensitive to Electrostatic Discharge

(ESD). When working on the relay with

the front panel removed, work surfaces

and personnel must be properly

grounded or equipment damage may

result.

!ATTENTION: Le relais contient des

pièces sensibles aux décharges

électrostatiques. Quand on travaille sur

le relais avec les panneaux avant ou du

dessus enlevés, toutes les surfaces et le

personnel doivent être mis à la terre

convenablement pour éviter les

dommages à l’équipement.

CAUTION: Removal of enclosure

panels exposes circuitry which may

cause electrical shock which can result

in injury or death.

!ATTENTION: Le retrait des panneaux

du boîtier expose le circuit qui peut

causer des chocos électriques pouvant

entraîner des blessures ou la mort.

Schweitzer Engineering Laboratories, SELOGIC, and are registered trademarks of Schweitzer

Engineering Laboratories. All brand or product names appearing in this document are the

trademark or registered trademark of their respective holders.

The relay and PC software, schematic drawings, relay commands, and relay messages are

rights reserved.

You may not copy, alter, dissassemble, or reverse-engineer the software. You may not provide the

software to any third party.

The information in this manual is furnished for informational use only and is subject to change

without notice. The English language manual is the only approved SEL manual.

This product is covered by U.S. Patent Nos: 5,436,784. Foreign Patents issued and other U.S. and

Foreign Patents Pending.

This product is covered by the standard SEL 10-year warranty. For warranty details, visit

www.selinc.com or contact your customer service representative.

Date Code 20010719 701 Motor Protection Relay

Table of Contents

List of Tables.......................................................................................................... vii

List of Figures....................................................................................................... xiii

List of Equations................................................................................................ xvii

List of Examples...................................................................................................xix

Manual Change Information .........................................................................xxi

Section 1: Introduction & Specifications

Introduction.......................................................................................................1.1

Typographic Conventions .................................................................................1.3

SEL-701 Relay Models.....................................................................................1.4

SEL-701 Relay Applications ............................................................................1.5

SEL-701 Relay Protection Features..................................................................1.6

SEL-701 Relay Monitoring & Reporting Features...........................................1.7

Relay Part Number............................................................................................1.8

SEL-701 Relay Serial Number Label .............................................................1.10

Specifications..................................................................................................1.11

Section 2: Installation

Panel Cut & Drill Plans.....................................................................................2.1

Relay Mounting ................................................................................................2.4

Relay Rear-Panel Diagram ...............................................................................2.5

Example AC Wiring Diagrams .........................................................................2.7

Relay Connections ..........................................................................................2.10

SEL-2600 RTD Module..................................................................................2.24

Section 3: SEL-701PC Software

Introduction.......................................................................................................3.1

System Requirements .......................................................................................3.2

Installation ........................................................................................................3.3

Section 4: Settings Calculation

Introduction.......................................................................................................4.1

Application Data ...............................................................................................4.3

General Data .....................................................................................................4.4

Basic Motor Protection .....................................................................................4.8

RTD-Based Protection ....................................................................................4.30

Voltage-Based Protection (Relay Models 0701001X & 0701011X)..............4.37

Output Configuration......................................................................................4.42

Serial Port Settings..........................................................................................4.50

Sequential Events Recorder (SER) Settings ...................................................4.52

701 Motor Protection Relay Date Code 20010719

Table of Contents

Section 5: Front-Panel Operation

Front-Panel Layout........................................................................................... 5.1

Normal Front-Panel Display ............................................................................ 5.2

Front-Panel Automatic Messages..................................................................... 5.3

Front-Panel Menus & Operations .................................................................... 5.4

Front-Panel Main Menu ................................................................................... 5.8

Section 6: ASCII Serial Port Operation

Introduction ...................................................................................................... 6.1

You Will Need… .............................................................................................. 6.2

Connect Your PC to the Relay ......................................................................... 6.3

Configure Your Terminal Emulation Software ................................................ 6.5

Using Terminal Commands.............................................................................. 6.6

Serial Port Access Levels ................................................................................. 6.7

Command Summary......................................................................................... 6.8

Command Explanations ................................................................................. 6.10

Serial Port Automatic Messages .................................................................... 6.32

Section 7: Commissioning

Introduction ...................................................................................................... 7.1

Relay Commissioning Procedure..................................................................... 7.2

Selected Functional Tests ................................................................................. 7.8

Section 8: Metering & Monitoring

Introduction ...................................................................................................... 8.1

Power Measurement Conventions.................................................................... 8.6

Load Profiling .................................................................................................. 8.7

Motor Operating Statistics ............................................................................... 8.9

Motor Start Report ......................................................................................... 8.12

Motor Start Trending...................................................................................... 8.14

Section 9: Event Analysis

Introduction ...................................................................................................... 9.1

Front-Panel Target LEDs.................................................................................. 9.2

Front-Panel Messages ...................................................................................... 9.4

History Data & Event Summaries.................................................................... 9.5

Event Reports ................................................................................................... 9.7

Sequential Events Recorder (SER) Report..................................................... 9.13

Example Event Report ................................................................................... 9.16

Example Sequential Events Recorder (SER) Report ..................................... 9.18

Date Code 20010719 701 Motor Protection Relay

Table of Contents v

Section 10: Maintenance & Troubleshooting

Routine Maintenance Checks .........................................................................10.1

Self-Testing .....................................................................................................10.3

Troubleshooting Procedure .............................................................................10.6

Power Supply Fuse Replacement....................................................................10.8

Real-Time Clock Battery Replacement ..........................................................10.9

Firmware Upgrade Installation .....................................................................10.10

Factory Assistance ........................................................................................10.13

Appendix A: Firmware Versions

Appendix B: SELOGIC®Control Equations & Relay Logic

Introduction...................................................................................................... B.1

Relay Functional Overview .............................................................................B.2

Relay Word Bits ............................................................................................... B.4

SELOGIC Control Equations ............................................................................ B.9

Factory Default Logic Settings ...................................................................... B.13

Front-Panel Display Message Configuration................................................. B.15

Nondedicated SELOGIC Control Equation Variable Settings ........................ B.16

Latch Control Switch Settings ....................................................................... B.17

Stop/Trip Logic.............................................................................................. B.19

Breaker Auxiliary Contact SELOGIC Control Equation Setting .................... B.22

Start and Emergency Restart Logic ............................................................... B.23

ACCESS2 SELOGIC Control Equation Setting.............................................. B.25

TARR SELOGIC Control Equation Setting .................................................... B.26

Speed Switch SELOGIC Control Equation Setting......................................... B.27

Event Triggering SELOGIC Control Equation................................................ B.28

Contact Output Control.................................................................................. B.29

Remote Control Switches .............................................................................. B.30

Selected Relay Logic Diagrams..................................................................... B.32

Appendix C: Modbus®RTU Communications Protocol

Introduction...................................................................................................... C.1

Modbus RTU Communications Protocol......................................................... C.2

01h Read Coil Status Command...................................................................... C.5

02h Read Input Status Command .................................................................... C.6

03h Read Holding Registers Command........................................................... C.7

04h Read Input Registers Command ............................................................... C.8

05h Force Single Coil Command..................................................................... C.9

06h Preset Single Register Command............................................................ C.10

07h Read Exception Status Command........................................................... C.11

08h Loopback Diagnostic Command ............................................................C.12

10h Preset Multiple Registers Command ...................................................... C.13

Controlling Output Contacts & Remote Bits Using Modbus ........................C.14

Reading the Relay Status Using Modbus.......................................................C.16

User-Defined Modbus Data Region............................................................... C.17

701 Motor Protection Relay Date Code 20010719

Table of Contents

Reading Event Data Using Modbus ...............................................................C.18

Modbus Register Map ....................................................................................C.19

Appendix D: SEL-2020/2030 & SEL-701PC Compatibility Features

Introduction ..................................................................................................... D.1

Fast Binary Message Lists............................................................................... D.2

Fast Binary Message Definitions .................................................................... D.3

Compressed ASCII Commands .................................................................... D.19

CASCII Command ........................................................................................ D.20

CSTATUS Command .................................................................................... D.24

CHISTORY Command ................................................................................. D.25

CEVENT Command ..................................................................................... D.26

CME E Command......................................................................................... D.28

CME M Command........................................................................................ D.29

CME T Command xxxxxx ............................................................................ D.30

Appendix E: Motor Thermal Element

Introduction ...................................................................................................... E.1

Purpose of Motor Thermal Protection..............................................................E.3

The Basic Thermal Element.............................................................................E.5

Motor Starting Protection................................................................................. E.8

Motor Running Protection................................................................................E.9

Interpreting Percent Thermal Element Capacity Values ................................ E.12

Motor Starting Thermal Capacity ..................................................................E.13

Appendix F: SEL-701 Relay Settings Sheets

Glossary............................................................................................................... GL.1

Index....................................................................................................................... IN.1

Date Code 20010719 701 Motor Protection Relay

List of Tables

Section 1: Introduction & Specifications

Table 1.1 Typographic Conventions..............................................................1.3

Table 1.2 SEL-701 Relay Models .................................................................1.4

Table 1.3 SEL-701 Relay Part Number Creation Table................................1.8

Section 2: Installation

Table 2.1 Typical Maximum RTD Lead Lengths........................................2.19

Section 3: SEL-701PC Software

Table 3.1 SEL-701PC Software System Requirements ................................3.2

Section 4: Settings Calculation

Table 4.1 Identifier Settings ..........................................................................4.4

Table 4.2 CT Configuration Settings.............................................................4.4

Table 4.3 Phase Rotation, Nominal Frequency Settings ...............................4.5

Table 4.4 VT Configuration Settings ............................................................4.6

Table 4.5 Thermal Element Configuration

Settings, Setting Method = RATING.......................................4.9

Table 4.6 Thermal Element Configuration

Settings, Setting Method = GENERIC ..................................4.11

Table 4.7 Generic Thermal

Limit Curve Tripping Times From

Reset versus Multiples of Full Load Amps,

Curves 1–10 (Thermal Limit Times in Seconds)...................4.14

Table 4.8 Generic Thermal Limit Curve

Tripping Times From Reset versus

Multiples of Full Load Amps, Curves 15, 20,

25, 30, 35, 40, 45 (Thermal Limit Times in Seconds) ...........4.15

Table 4.9 Thermal Element Configuration

Settings, Setting Method = USER .........................................4.17

Table 4.10 3000 HP Motor Thermal Limit Times ........................................4.20

Table 4.11 Thermal Capacity Alarm Setting.................................................4.21

Table 4.12 Thermal Capacity to Start Settings..............................................4.21

Table 4.13 Motor Cooling Time Settings......................................................4.22

Table 4.14 Overcurrent Element Settings .....................................................4.23

Table 4.15 Jogging Block Element Settings .................................................4.25

Table 4.16 Load-Jam Function Settings........................................................4.25

Table 4.17 Load-Loss Element Settings, No Voltage Option .......................4.26

Table 4.18 Load-Loss Element Settings, With Voltage Option ....................4.26

Table 4.19 Current Unbalance Element Settings ..........................................4.27

Table 4.20 Phase Reversal Tripping Setting..................................................4.28

Table 4.21 Speed Switch Tripping Time Delay Setting................................4.29

Table 4.22 RTD Configuration Settings........................................................4.30

701 Motor Protection Relay Date Code 20010719

List of Tables

viii

Table 4.23 RTD Location Settings ............................................................... 4.31

Table 4.24 RTD Type Settings...................................................................... 4.32

Table 4.25 RTD Alarm and Trip Temperature Settings................................ 4.33

Table 4.26 RTD Resistance versus Temperature.......................................... 4.36

Table 4.27 Under- and Overvoltage Settings, Phase-to-Phase Potentials .... 4.37

Table 4.28 Under- and Overvoltage Settings, Phase-to-Neutral Potentials.. 4.38

Table 4.29 Reactive Power Element Settings ............................................... 4.38

Table 4.30 Underpower Element Settings .................................................... 4.39

Table 4.31 Power Factor Element Settings................................................... 4.40

Table 4.32 Frequency Element Settings ....................................................... 4.41

Table 4.33 Analog Output Settings .............................................................. 4.42

Table 4.34 Front-Panel Configuration Settings ............................................ 4.43

Table 4.35 Display Message Settings........................................................... 4.44

Table 4.36 Output Contact Fail-Safe,

Trip Duration, and Starting Lockout Settings ....................... 4.45

Table 4.37 Antibackspin Setting................................................................... 4.45

Table 4.38 Factory Logic Settings................................................................ 4.46

Table 4.39 SET P Serial Port Settings, Protocol = ASCII............................ 4.50

Table 4.40 SET P Rear-Panel Serial Port Settings, Protocol = MOD .......... 4.51

Table 4.41 SET R SER Trigger Settings ...................................................... 4.52

Table 4.42 Default SER Trigger Setting Relay Word Bits Definitions ........ 4.53

Table 4.43 SET R SER Enable Alias Settings.............................................. 4.55

Table 4.44 SET R SER Alias Settings.......................................................... 4.56

Section 5: Front-Panel Operation

Table 5.1 Front-Panel Automatic Messages................................................. 5.3

Table 5.2 Front-Panel Pushbutton Functions................................................ 5.5

Section 6: ASCII Serial Port Operation

Table 6.1 Pin Functions and Definitions

for SEL-701 Relay EIA-232 Serial Ports................................ 6.4

Table 6.2 SEL-701 Relay Serial Communication Default Settings ............. 6.5

Table 6.3 Serial Port Control Characters...................................................... 6.6

Table 6.4 SEL-701 Serial Port Command Summary.................................... 6.8

Table 6.5 SEL-701 Relay Control Subcommands...................................... 6.12

Table 6.6 Event Commands........................................................................ 6.13

Table 6.7 EVE Command Examples.......................................................... 6.13

Table 6.8 LDP Command Options ............................................................. 6.14

Table 6.9 MSR General Command Format................................................ 6.19

Table 6.10 PULSE Command Format.......................................................... 6.20

Table 6.11 SER Command Options.............................................................. 6.22

Table 6.12 Serial Port SET Commands........................................................ 6.22

Table 6.13 SET Command Editing Keystrokes............................................ 6.23

Table 6.14 SET Command Format............................................................... 6.23

Table 6.15 SHOW Command Options ......................................................... 6.24

Date Code 20010719 701 Motor Protection Relay

List of Tables ix

Table 6.16 STATUS Command Options .......................................................6.26

Table 6.17 TARGET Command Options ......................................................6.28

Table 6.18 Front-Panel LEDs & the TAR 0 Command ................................6.29

Table 6.19 SEL-701 Relay Word & Corresponding TAR Command ...........6.30

Table 6.20 Serial Port Automatic Messages .................................................6.32

Section 7: Commissioning

Table 7.1 Serial Port Commands that Clear Relay Data Buffers ..................7.6

Table 7.2 Test Source Connections for Different Relay Configurations.......7.8

Table 7.3 Phase Current Measuring Accuracy............................................7.11

Table 7.4 Neutral Current Measuring Accuracy .........................................7.12

Table 7.5 Current Unbalance Measuring Accuracy ....................................7.13

Table 7.6 Thermal Element Expected Trip Times ......................................7.14

Table 7.7 Analog Output Test .....................................................................7.15

Table 7.8 100-Ohm Platinum RTD Type (RTDs 1–6) ................................7.16

Table 7.9 100-Ohm Platinum RTD Type (RTDs 7–12) ..............................7.16

Table 7.10 120-Ohm Nickel RTD Type (RTDs 1–6) ....................................7.17

Table 7.11 120-Ohm Nickel RTD Type (RTDs 7–12) ..................................7.17

Table 7.12 100-Ohm Nickel RTD Type (RTDs 1–6) ....................................7.18

Table 7.13 100-Ohm Nickel RTD Type (RTDs 7–12) ..................................7.18

Table 7.14 10-Ohm Copper RTD Type (RTDs 1–6) .....................................7.19

Table 7.15 10-Ohm Copper RTD Type (RTDs 7–12) ...................................7.19

Table 7.16 Power Measuring Accuracy Test Values, Wye Voltages .............7.20

Table 7.17 Power Measuring Accuracy Test Values, Delta Voltages............7.21

Section 8: Metering & Monitoring

Table 8.1 Measured Values ...........................................................................8.2

Table 8.2 Demand Meter Values ...................................................................8.3

Table 8.3 Max/Min Recorded Values............................................................8.3

Table 8.4 Thermal Meter Values ...................................................................8.4

Table 8.5 RTD Input Status Messages ..........................................................8.5

Table 8.6 Energy Meter Values .....................................................................8.5

Table 8.7 Load Profile Values .......................................................................8.7

Section 9: Event Analysis

Table 9.1 SEL-701 Relay Front-Panel Target LED Definitions....................9.2

Table 9.2 Event Commands ..........................................................................9.8

Table 9.3 EVE Command Options................................................................9.8

Table 9.4 Event Report Current and Voltage Columns .................................9.9

Table 9.5 Output, Input, and Element Event Report Columns....................9.10

Table 9.6 Retrieving SER Reports ..............................................................9.13

Table 9.7 Example Sequential Events

Recorder (SER) Report Explanations ....................................9.19

701 Motor Protection Relay Date Code 20010719

List of Tables

Section 10: Maintenance & Troubleshooting

Table 10.1 Data Capture............................................................................... 10.2

Table 10.2 Relay Self-Tests.......................................................................... 10.3

Table 10.3 Relay Enabled Front-Panel LED Dark ....................................... 10.6

Table 10.4 Cannot See Characters on Relay Front-Panel Display Screen ... 10.6

Table 10.5 Relay Does Not Accurately Measure Voltages or Currents........ 10.6

Table 10.6 Relay Does Not Respond to

Command from Device Connected to Serial Port................. 10.7

Table 10.7 Relay Does Not Respond to Faults............................................. 10.7

Appendix A: Firmware Versions

Table A.1 SEL-701 Relay Firmware Versions ............................................. A.1

APPENDIX B: SELOGIC®Control Equations & Relay Logic

Table B.1 SEL-701 Relay Word Bits ............................................................B.4

Table B.2 Relay Word Bit Definitions for SEL-701 .....................................B.5

Table B.3 SELOGIC Control Equation Operators..........................................B.9

Table B.4 Remote Control Switch ..............................................................B.30

Appendix C: Modbus®RTU Communications Protocol

Table C.1 Modbus Query Fields ...................................................................C.2

Table C.2 SEL-701 Relay Modbus Function Codes .....................................C.3

Table C.3 SEL-701 Relay Modbus Exception Codes ...................................C.3

Table C.4 01h Read Coil Status Command...................................................C.5

Table C.5 02h Read Input Status Command .................................................C.6

Table C.6 03h Read Holding Registers Command .......................................C.7

Table C.7 04h Read Input Registers Command ............................................C.8

Table C.8 05h Force Single Coil Command .................................................C.9

Table C.9 SEL-701 Relay Command Coils ..................................................C.9

Table C.10 06h Preset Single Register Command ........................................C.10

Table C.11 07h Read Exception Status Command .......................................C.11

Table C.12 08h Loopback Diagnostic Command .........................................C.12

Table C.13 10h Preset Multiple Registers Command ...................................C.13

Table C.14 SEL-701 Relay Modbus Command Region ...............................C.14

Table C.15 Modbus Command Codes...........................................................C.15

Table C.16 Relay Self-Test Result in Bit Definition.....................................C.16

Table C.17 Assign Event Report Channel Using Address 0392h.................C.18

Table C.18 Modbus Register Map.................................................................C.19

Appendix D: SEL-2020/2030 & SEL-701PC Compatibility Features

Table D.1 Binary Message List .................................................................... D.2

Table D.2 ACSII Configuration Message List ............................................. D.2

Table D.3 A5C0 Relay Definition Block ..................................................... D.3

Table D.4 A5C1 Fast Meter Configuration Block........................................ D.4

Table D.5 A5D1 Fast Meter Data Block ...................................................... D.9

Indice

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