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EL731 AC/DC Sensitive Earth-Leakage Relay
Rev. 6-F-032816
TABLE OF CONTENTS
SECTION
PAGE
SECTION
PAGE
1
Introduction ..............................................................1
1.1 General........................................................................1
1.2 EL731 Features ..........................................................1
1.2.1 Protective Functions.......................................1
1.2.2 Metering..........................................................1
1.2.3 Data Logging..................................................1
1.2.4 Inputs and Outputs .........................................1
1.2.5 Operator Interface ..........................................1
1.2.6 Communications Interface.............................1
Installation.................................................................1
2.1 System Wiring............................................................1
2.1.1 Supply Voltage...............................................2
2.1.2 Current Sensor Connections..........................2
2.1.3 Analog Output................................................2
2.1.4 PTC or RTD Input..........................................2
2.1.5 Communications (Optional) ..........................2
2.1.6 Remote Reset..................................................2
2.1.7 Relay Outputs.................................................2
2.2 Calibration ..................................................................2
Operation and Setup................................................9
3.1 Display and Indication ...............................................9
3.1.1 Front-Panel LED Indication ..........................9
3.1.1.1 Trip ....................................................9
6
Technical Specifications........................................ 16
6.1 EL731 ....................................................................... 16
6.2 EMC Tests................................................................ 17
6.3 Certification.............................................................. 18
6.4 Current Sensors........................................................ 18
Ordering Information ........................................... 19
Warranty................................................................. 19
Performance Test................................................... 20
7
8
9
10
Maintenance ........................................................... 20
2
Appendix A EL731 Menu Map........................................ 22
Appendix B System Parameters & Setup Record......... 24
Appendix C EL731 Revision History.............................. 25
LIST OF FIGURES
FIGURE
PAGE
1
2
3
4
5
6
7
EL731 Outline and Mounting Details ........................... 3
AC700-SMK Outline and Mounting Details................ 4
Panel and Surface Mounting Connections.................... 4
Connection Diagram ...................................................... 5
AC700-CVR-00 Weatherproof Cover Outline............. 6
AC700-CVR-00 Weatherproof Cover Installation....... 7
EL731 with installed EtherNet/IP™
Communications Upgrade Adapter
(AC700-CUA-03).......................................................... 8
EL731 with Firmware Upgrade Module
3
3.1.1.2 CT Status...........................................9
3.1.1.3 Alarm.................................................9
3.1.2 Communications-Module LED
8
9
Indication and Status......................................9
(AC700-CUA-00). ........................................................ 8
EFCT-1 Outline and Mounting Details....................... 12
3.2 Main Menus................................................................9
3.2.1 Metering..........................................................9
3.2.2 Messages.........................................................9
3.2.3 Setup .............................................................10
3.2.3.1 Earth-Fault Protection.....................10
10 EFCT-2 Outline and Mounting Details....................... 13
11 EFCT-26 Outline and Mounting Details..................... 14
12 PGA-0520 Analog Percent Current Meter.................. 15
13 Earth-Fault-Test Circuit ............................................... 21
3.2.3.2 Temperature Protection ..................10
3.2.3.3 Output-Relay Assignments ............10
3.2.3.4 Analog Output.................................10
3.2.3.5 Miscellaneous Configuration .........11
LIST OF TABLES
TABLE
PAGE
3.2.3.5.1 Password .........................11
3.2.3.5.2 Reset Password...............11
3.2.3.5.3 Menu Timeout ................11
3.2.3.5.4 Display Filter ..................11
1
2
3
4
Trip LED Flash Codes ................................................... 9
CT2 Input Filters .......................................................... 10
Output-Relay Functions............................................... 10
Earth-Fault-Test Record............................................... 21
3.2.3.5.5 Maintenance....................11
3.2.4 Password.......................................................11
3.3 Trip Reset .................................................................11
Theory of Operation ..............................................15
4.1 CT1 Theory of Operation ........................................15
4.2 CT2 Theory of Operation ........................................15
4.2.1 CT2 Full Range Filter ..................................15
4.2.2 CT2 90 Hz Low Pass Filter .........................15
4.2.3 CT2 3 kHz Low Pass Filter .........................16
4.2.4 CT2 190 Hz High Pass Filter.......................16
Personal Computer Interface...............................16
5.1 Flash Memory Upgrade ...........................................16
DISCLAIMER
4
5
Specifications are subject to change without notice.
Littelfuse Startco is not liable for contingent or
consequential damages, or for expenses sustained as a
result of incorrect application, incorrect adjustment, or a
malfunction.
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