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EL731 AC/DC Sensitive Earth-Leakage Relay Rev. 6-F-032816
TABLE OF CONTENTS
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
2 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
3 Operation and Setup................................................ 9
3.1 Display and Indication ............................................... 9
3.1.1 Front-Panel LED Indication .......................... 9
3.1.1.1 Trip .................................................... 9
3.1.1.2 CT Status ........................................... 9
3.1.1.3 Alarm................................................. 9
3.1.2 Communications-Module LED
Indication and Status ...................................... 9
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
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
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
3.2.3.5.5 Maintenance....................11
3.2.4 Password.......................................................11
3.3 Trip Reset ................................................................. 11
4 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
5 Personal Computer Interface...............................16
5.1 Flash Memory Upgrade ...........................................16
SECTION PAGE
6 Technical Specifications........................................ 16
6.1 EL731 ....................................................................... 16
6.2 EMC Tests................................................................ 17
6.3 Certification.............................................................. 18
6.4 Current Sensors ........................................................ 18
7 Ordering Information........................................... 19
8 Warranty................................................................. 19
9 Performance Test................................................... 20
10 Maintenance ........................................................... 20
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 EL731 Outline and Mounting Details ........................... 3
2 AC700-SMK Outline and Mounting Details................ 4
3 Panel and Surface Mounting Connections .................... 4
4 Connection Diagram ...................................................... 5
5 AC700-CVR-00 Weatherproof Cover Outline............. 6
6 AC700-CVR-00 Weatherproof Cover Installation....... 7
7 EL731 with installed EtherNet/IP™
Communications Upgrade Adapter
(AC700-CUA-03).......................................................... 8
8 EL731 with Firmware Upgrade Module
(AC700-CUA-00). ........................................................ 8
9 EFCT-1 Outline and Mounting Details....................... 12
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
LIST OF TABLES
TABLE PAGE
1 Trip LED Flash Codes ................................................... 9
2 CT2 Input Filters .......................................................... 10
3 Output-Relay Functions ............................................... 10
4 Earth-Fault-Test Record............................................... 21
DISCLAIMER
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.
