SE-601 DC Ground-Fault Monitor Manual Rev 2-B-073014
Contents
1. 14 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 WA Littelfuse Page it STARTCO SE 601 DC Ground Fault Monitor Rev 2 B 073014 This page intentionally left blank Littelfuse STARTCO 1 GENERAL The SE 601 is a microprocessor based ground fault monitor for ungrounded dc systems Its output relay can operate in the fail safe or non fail safe mode undervoltage or shunt trip applications The SE 601 has one output relay with isolated normally open and normally closed contacts for use in independent control circuits Additional features include LED power and faulted bus indication autoreset or latching trips with front panel and remote reset trip memory test button self diagnostics 0 to 5 V analog output and digital selector switches The SE 601 can be DIN rail surface or panel mounted Ground fault current is sensed using an SE GRM series Ground Reference Module a resistor network that limits ground fault current to 25 mA The trip level of the ground fault circuit is selectable from 1 to 20 mA Trip time is selectable from 0 05 to 2 5 s 2 OPERATION 2 1 CONFIGURATION SWITCH SETTINGS See Fig 1 2 1 1 RELAY OPERATING MODE Switch 1 is used to set the operating mode of the ou2. 3 4 SE 601 Compatibility 9 5 Technical Specifications 10 5 1 S S o OE a 10 5 2 Ground Reference Modules 11 6 Ordering Information 12 7 Warranty SL an S Sl ubasshina 13 8 Ground Fault Performance Test 13 Appendix A SE 601 Revision History 15 SE 601 DC Ground Fault Monitor Page ii Rev 2 B 073014 LIST OF FIGURES FIGURE PAGE 1 SE 601 Outline and Mounting Details 2 Typical Connection Diagram 3 3 SE GRM Series Ground Reference Modules 24106125 V ii ee eie rrt ER DER 4 4 SE GRM Series Ground Reference Modules 250 t0 600 Vu cic breeders eeu 5 5 SE GRM Series Ground Reference Modules 780 to 1000 V iate be teh terere 6 6 55 Panel Mount Adapter 7 7 60 Panel Mount Adapter 8 8 PGA 0500 Analog Percent Current Meter 9 9 Ground Fault Test Circutt 13 10 System Ground Fault Test 14 LIST OF TABLES TABLE PAGE 1 SE 601 Trip Levels and Fault Resistance Values I 2 Trip Features Comparison 9 3 Ground Fault Test Record
3. Littelfuse STARTCO 3714 Kinnear Place Saskatoon SK Canada 57 0 Ph 306 373 5505 306 374 2245 www littelfuse com relayscontrols SE 601 MANUAL DC GROUND FAULT MONITOR REVISION 2 B 073014 O TELFUSE 2 ROUND FAULT MONITOR SE 601 DC G BUS PWR TRIP Copyright 2014 by Littelfuse Startco All rights reserved Document Number PM 1000 EN Printed in Canada Littelfuse Page i STARTCO SE 601 DC Ground Fault Monitor Rev 2 B 073014 This page intentionally left blank Littelfuse STARTCO TABLE OF CONTENTS SECTION PAGE 1 Generalen cise ek sie eee one eR 1 2 Operation oaa EH UOI E 1 2 1 Configuration Switch Settings 1 2 1 1 Relay Operating Mode 1 21 2 Reset Mode iota ets 1 2 2 Front Panel Controls 1 2 2 1 Ground Fault Trip Level 1 2 2 2 Ground Fault Trip Time 1 223 r epa nedum 1 PAD 1 2 3 Front Panel Indication 3 D Bil ROWSE 3 2 3 2 WMP iiri niet iieri e nest 3 2 4 Analog Output sse 3 2 5 Self Diagnostics sse 3 3 Installation esee 3 3 3 2 Ground Reference Modules
4. IEC 61000 4 16 Zone A differential mode 150 Vrms Zone common mode 300 Vrms IEC 61000 4 18 I kV differential mode line to line 2 5 kV common mode FCC Part 15 Subpart B Class A Unintentional Radiators Page 11 Rev 2 B 073014 Certification CSA Canada and USA G B LR 53428 C US UL Listed LISTED Ground Fault Sensing and Relaying Equipment 4FX9 E340889 Australia N11659 FCC FE CE European Union Complies to 61010 1 2001 2 Edition EN 61010 1 2001 2 Edition Safety Requirements for Electrical Equipment for Measurement Control and Laboratory Use Part 1 NOTES Over operating temperature range of 40 to 60 C 40 to 1409F Trip time at 3 x trip level setting 5 2 GROUND REFERENCE MODULES Nominal Current 12 5 Maximum Fault Current 25 mA Duty Cycle esee Continuous Environment Operating Temperature 40 to 60 C 40 to 140 F Storage Temperature 55 to 80 C 67 to 160 F Humidity 85 Non Condensing SE GRM024 Power Dissipation At 24 V dc Unfaulted 0 3 W Ground Fault 0 6 W maximum Shipping Weight 300 g 0 7 Ib SE GRM048 Power Dissipation At 48 Unfaulted 0 6 W Ground Fault 1 2 W maximum Shipping Weight 300 g 0 7 Ib Lit
5. 4 maximum PWB Conformal Coating MIL 1 46058 qualified UL QMJU2 recognized Surge Withstand ANSI IEBE 37 90 1 1989 Oscillatory and Fast Transient Vibration EN60255 21 1 Vibration Shock and Seismic EN60255 21 2 Shock and Bump EMC Tests Verification tested in accordance with EN 50263 2000 Radiated and Conducted Emissions CISPR 11 2009 CISPR 22 2008 EN55022 2010 Class A Current Harmonics and Voltage Fluctuation 61000 3 2 and IEC 61000 3 3 Class A Littelfuse STARTCO Electrostatic Discharge Radiated RF Immunity Fast Transient Surge Immunity Conducted RF Immunity Magnetic Field Immunity Voltage Interruption Power Frequency 1 MHz Burst RFI Compliance SE 601 DC Ground Fault Monitor TEC 61000 4 2 6 kV contact discharge direct and indirect 8 kV air discharge TEC 61000 4 3 10 V m 80 1000 MHz 80 AM 1 kHz 10 V m 900 MHz 200 Hz pulse modulated IEC 61000 4 4 4 on AC mains and lines IEC 61000 4 5 Zone B 1 kV differential mode 2 kV common mode IEC 61000 4 6 10 V 0 15 80 MHz 80 AM 1 kHz IEC 61000 4 8 50 Hz and 60 Hz 30 and 300 A m 61000 4 11 IEC 61000 429 0 for 5 10 20 50 100 amp 200 ms 3x each
6. ATION RESET MODE unuseD TONES LATCHING AUTORESET OFF TI eer ore ros RELAY OPERATING MODE 04 FAIL SAFE NON FAIL SAFE KEEP IN OFF POS UNUSED OFF KEEP IN OFF Pos RESET MODE 2 LATCHING auroneseT RELAY OPERATING MODE F 1 AIL SAFE t3 INON FAIL SAFE 0 34 Page 2 Rey 2 B 073014 e MOUNTING DETAIL 118 0 NOTE 3 E 4 65 110 0 LITTELFUSE STARTCO DC GROUND FAULT MONITOR SE 601 BUS E Littelfuse NOTES 4 33 9 10 12 13 14 15 16 DIMENSIONS IN MILLIMETRES INCHES ROUEN n H Ki MOUNTING SCREWS M4 OR 8 32 OVERALL DIMENSIONS WHEN MOUNTED ON DIN EN50022 35 mm x 7 5 mmTOP HAT RAIL ADJUSTMENT KNOBS ARE REMOVABLE BOTTOM FIGURE 1 SE 601 Outline and Mounting Details Littelfuse STARTCO 2 3 FRONT PANEL INDICATION 2 3 1 POWER The green LED labelled PWR indicates presence of the supply voltage 2 3 2 TRIP The red TRIP LED s indicate a ground fault trip The BUS TRIP LED indicates a ground fault on the negative dc bus The BUS TRIP LED indicates a ground fault on the positive dc bus Two fast flashes indicate a diagnostic trip See Section 2 5 2 4 ANALOG OUTPUT The non isolated 0 to 5 V analog output indicates ground fault current The output is 5 V when ground fault current is 20 mA Use a PGA 0500 Analog P
7. Coating Blank Partial Conformal Coating CC Full Conformal Coating Supply U Universal 120 240 Vac Vdc Supply D 12 24 Vdc Supply T 48 Vdc Supply SE GRM024 Ground Reference Module for 24 V dc system SE GRM048 Ground Reference Module for 48 V dc system SE GRM125 Ground Reference Module for 125 Vdc system SE GRM250 Ground Reference Module for 250 Vdc system SE GRM300 Ground Reference Module for 300 Vdc system SE GRM400 Ground Reference Module for 400 Vdc system SE GRM500 Ground Reference Module for 500 Vdc system SE GRM600 Ground Reference Module for 600 Vdc system SE GRM780 Ground Reference Module for 780 Vdc system SE GRM1000 Ground Reference Module for 1000 Vdc system Consult factory for other ground reference modules 0500 Analog Percent Current Meter 0 to 100 range PGA 05CV included 55 Panel Mount Adapter NEMA 1 PMA 60 Panel Mount Adapter NEMA 3 IP53 Includes two TR20 tamper resistant Torx screws and two thumb screws Consult factory for custom mounting adapters Littelfuse STARTCO 7 WARRANTY The SE 601 DC Ground Fault Monitor is warranted to be free from defects in material and workmanship for a period of five years from the date of purchase Littelfuse Startco will at Littelfuse Startco s option repair replace or refund the original purchase
8. STRUCTIONS 1 WITH COVER REMOVED LATCH MONITORTO BRACKET INSERT BRACKET THROUGH FRONT OF PANEL CUTOUT AND SECURE WITH FLAT WASHERS AND LOCKNUTS PROVIDED CONNECT WIRING TO TERMINALS ATTACH COVER USING SECURITY SCREWS OR THUMB SCREWS PROVIDED NOTES DIMENSIONS IN MILLIMETRES INCHES MEETS IP53 INCLUDES TWO TR20 TAMPER RESISTANT TORX SCREWS M4 0 7x16 mm INSTALLED AND TWOTHUMB SCREWS BRACKET 55 mm 2 2 WIDE Page 9 Rev 2 B 073014 F4 EE SE 601 DC Ground Fault Monitor R1 25 0 049 MAXIMUM NOTES 1 CONVERSION KIT FOR 0 5 V ANALOG OUTPUT SEE PGA 0500 DOCUMENTATION 2 DIMENSIONS IN MILLIMETRES INCHES MOUNTING CUTOUT si SN 100 SN 80 N e SM FA Littelfuse 40 QI gt Y PGA 0500 ANALOG CURRENT METER FRONT FIGURE 8 PGA 0500 Analog Percent Current Meter 4 SE 601 COMPATIBILITY memory The current revision of the SE 601 can directly replace previous revision 00 units The hardware The current SE 601 has been enhanced with the revision number is listed on the SE 601 model serial addition of non volatile trip memory for the fail safe number label affixed to the SE 601 enclosure Both
9. ercent Current Meter with the PGA 05CV Voltage Converter to indicate ground fault current See Figs 2 and 8 2 5 SELF DIAGNOSTICS A diagnostic trip is indicated by two fast flashes of the TRIP LED s It can be caused by a diagnostic problem detected by an incorrect reading from non volatile memory Press RESET or cycle supply voltage If problems persist contact Littelfuse Startco SE 601 DC Ground Fault Monitor Page 3 Rev 2 B 073014 3 INSTALLATION 3 1 SE 601 An SE 601 can be surface or DIN rail mounted See Fig 1 Panel mounting requires a PMA 55 or PMA 60 Panel Mount Adapter See Figs 6 and 7 Connect the SE 601 DC Ground Fault Monitor and SE GRM series Ground Reference Module as shown in Fig 2 Remove the connection to terminals 5 and 9 for dielectric strength testing all inputs and outputs have ANSI IEEE C37 90 surge protection circuits that conduct above 300 Vac 3 2 GROUND REFERENCE MODULES Outline and mounting dimensions for the SE GRM series Ground Reference Modules are provided in Figs 3 4 and 5 The SE GRM780 and SE GRM1000 dissipate approximately 9 6 and 12 5 W respectively under normal conditions and 19 2 and 25 0 W respectively at maximum when a ground fault is present at 780 V or 1000 V If the system is to be operated for more than two minutes with a ground fault present an additional heat sink is required This can be achieved by applying thermal compound silicone grease to the Ground Ref
10. erence Module s mounting surface then securely fastening it to an aluminum panel with minimum dimensions of 300 mm 12 x 300 mm 12 x 3 mm 0 120 UNGROUNDED 8 DC SYSTEM SE GRMXXX 4 L1 V4 10 L2 NO NOTE 2 14 c 16 NZ I REMOTE RESET SE 601 L 6 RS LEAKAGE 8 OUTPUT 7 tO ANALOG tO PGA 05CV PGA 0500 NOTE 1 INDICATION SSA PWR N FIGURE 2 Typical Connection Diagram L2 V NOTES 1 USE OPTIONAL PGA 0500 ANALOG PERCENT CURRENT METER WITH PGA 05CV CURRENT VOLTAGE CONVERTER TO DISPLAY FAULT CURRENT AS A PERCENT OF 20 mA OUTPUT RELAY CONTACTS SHOWN IN THE DE ENERGIZED STATE L1 L2 MAY BE CONNECTEDTO DC BUS FOR BUS VOLTAGES NOT EXCEEDING SUPPLY VOLTAGE OPTION SPECIFIED DO NOT EXCEED OUTPUT RELAY CONTACT RATINGS Littelfuse STARTCO SE GRM024TO SE GRM125 5 SE GRMXXX XXX VDG GROUND REFERENCE MODULE FA Littelfuse STARTCO 2 C BORE 10 0 0 39 DIA 9 e 3 2 0 13 DEEP FRONT MOUNTING DETAIL 4 5 0 18 DIA FAULT CURRENT CYCLE NOTES 1 DIMENSIONS IN MILLIMETRES INCHES 2 MOUNTING SCREWS M4 OR 8 32 FIGURE 3 SE GRM Series Ground Reference Modules 24 to 125 V Page 4 SE 601 DC Ground Fault Monitor Rev 2 B 073014 Littelfuse Page 5 STARTCO SE 601 DC Ground Fault Mon
11. heit temperature range SE 601 dimensions added APPENDIX A Revision history added PRODUCT REVISION HISTORY REVISION 03 Firmware Improved operation of front panel test button WA Littelfuse Page 16 STARTCO SE 601 DC Ground Fault Monitor Rev 2 B 073014 The page intentionally left blank
12. itor Rev 2 B 073014 SE GRM250TO SE GRM600 XXX VDC GROUND REFERENCE MODULE SE GRMXXX Littelfuse E RTCO 4 5 0 18 DIA C BORE 10 0 0 39 DIA 3 2 0 13 DEEP FRONT SIDE MOUNTING DETAIL MODULE UNFAULTED GROUND FAULT DUTY FAULT CURRENT CYCLE SE GRM250 6 3 W MAX CONTINUOUS SE GRM300 i 72W MAX CONTINUOUS SE GRM400 i 8 9 W MAX CONTINUOUS SE GRM500 12 5 W CONTINUOUS SE GRM600 14 4W MAX CONTINUOUS CONTACT FACTORY FOR OTHER VOLTAGES NOTES 1 DIMENSIONS IN MILLIMETRES INCHES 2 MOUNTING SCREWS M4 x 25 OR 8 32 x 1 00 FIGURE 4 SE GRM Series Ground Reference Modules 250 to 600 V Littelfuse Page 6 STARTCO SE 601 DC Ground Fault Monitor Rev 2 B 073014 SE GRM780 TO SE GRM1000 91 7 3 61 PN FA Littelfuse 5 EM N CAUTION XXX V n o FRONT MOUNTING DETAIL MODULE UNFAULTED GROUND FAULT DUTY FAULT CURRENT CYCLE CONTACT FACTORY FOR OTHER VOLTAGES NOTES 1 DIMENSIONS IN MILLIMETRES INCHES 2 MOUNTING SCREWS M4 OR 8 32 3 ADDITIONAL HEAT SINK REQUIRED IF OPERATED MORETHAN TWO MINUTES WITH A GROUND FAULT FIGURE 5 SE GRM Series Ground Reference Modules 780 to 1 000 V Littelfuse Page 7 STARTCO SE 601 DC Gr
13. ound Fault Monitor Rev 2 B 073014 109 0 4 29 __ PANELTHICKNESS 1 6 0 06 4 8 0 19 ij CC LITTELFUSE STARTCO DC GROUND FAULT MONITOR SE 601 BUS PWR TRIP LEVEL mA TEST E Littelfuse BRACKET 55 mm 2 2 WIDE MONITOR FRONT VIEW SIDE VIEW INSTALLATION INSTRUCTIONS 1 REMOVE BEZEL AND LATCH MONITORTO BRACKET INSERT BRACKET THROUGH FRONT OF PANEL 1 CUTOUT AND SECURE WITH FLAT WASHERS AND LOCKNUTS PROVIDED 2 0 0 08 RAD MAXIMUM CONNECT WIRING TO TERMINALS 3 8 0 15 DIA INSTALL BEZEL USING 6 32 x 0 31 SCREWS 8 4 0 33 DIA PROVIDED Lg 4 2 0 16 RAD P NOTES ALTERNATE GONFIGURATIONS 1 DIMENSIONS IN MILLIMETRES INCHES PANEL CUTOUT DETAIL FIGURE 6 55 Panel Mount Adapter Littelfuse STARTCO SE 601 DC Ground Fault Monitor Page 8 Rev 2 B 073014 116 0 4 57 PANELTHICKNESS 1 6 0 06 TO 4 8 0 19 J FRONT VIEW 3 Y 2 0 0 08 RAD MAXIMUM 4 5 0 18 DIA 8 7 0 34 DIA 4 3 0 17 RAD F ALTERNATE 2T CONFIGURATIONS PANEL CUTOUT DETAIL FIGURE 7 PMA 60 Panel Mount Adapter MONITOR TRANSPARENT COVER NOTE 2 SIDE VIEW INSTALLATION IN
14. price of an SE 601 that is determined by Littelfuse Startco to be defective if it is returned to the factory freight prepaid within the warranty period This warranty does not apply to repairs required as a result of misuse negligence an accident improper installation tampering or insufficient care Littelfuse Startco does not warrant products repaired or modified by non Littelfuse Startco personnel 8 GROUND FAULT PERFORMANCE TEST A test record form is provided for recording the date and the final results of the performance tests The following ground fault system test is to be conducted by qualified personnel a Evaluate the interconnected system in accordance with the overall equipment manufacturer s detailed instructions L1 V SE 601 DC Ground Fault Monitor Page 13 Rev 2 B 073014 b Verify proper reaction of the device in response to a simulated or complete system test c To simulate a ground fault power down the entire system and remove the connection to terminal 4 S Ensure that terminal 5 is connected to ground Using 24 Vdc source 50 variable resistor fixed I resistor and an ammeter connect the circuit as shown in Fig 9 Select a trip current on the SE 601 and slowly vary the resistance until the monitor trips Never exceed 30 mA through the monitor d 7 For a system ground fault test install a fixed or variable resistance and switch that is suitably rated for the sys
15. relay operating mode Prior to hardware revision 01 generations are compared in Table 2 mechanical flag was used instead of non volatile TABLE 2 TRIP FEATURES COMPARISON HARDWARE REVISION 00 201 LED trip indication Yes Yes Mechanical flag trip indication Yes No Non volatile trip memory No Yes Trip LED Off Trip LED On Fail safe Trip relay Energized Trip relay De energized Device state after supply voltage cycled Trip flag Red when tripped ground fault removed Trip LED Off Trip LED Off Non fail safe Trip relay De energized Trip relay De energized Trip flag Red Littelfuse STARTCO 5 TECHNICAL SPECIFICATIONS 5 1 SE 601 Supply OU Option 5 VA 120 to 240 Vac 20 55 50 60 Hz 2 W 100 to 240 Vdc 20 25 OD Option 2 W 12 to 30 Vde 20 25 OT Option 2 W 40 to 55 Vdc 20 25 Trip Level Settings 1 2 3 4 5 6 8 10 15 20 Trip Time Settings 0 05 0 10 0 20 0 30 0 40 0 50 1 0 1 5 2 0 and 2 5 s Accuracies Trip Level 5 of setting 0 15 mA minimum Trip Time 5 of setting 15 ms minimum Trip Mode risisti Latching or Autoreset Analog Output 5 0 25 per mA Output Impedance 2200 F
16. ront Panel Button and Remote N O Momentary Contact Functional Test Front Panel Button Relay Contacts Configuration Isolated N O and N C Operating Mode Fail Safe or Non Fail Safe CSA UL Rating 8 A resistive 250 Vac 8 A resistive 30 Vdc 0 25 HP 120 240 Vac Supplemental Contact Ratings Carry Current 8 A maximum Break 30 Vdc 240 W Resistive 170 W Inductive 7 ms 120 24 W Resistive 17 W Inductive 7 ms SE 601 DC Ground Fault Monitor Page 10 Rev 2 B 073014 2 000 VA Resistive 875 VA Inductive PF 0 4 Subject to maximums of 8 A and 250 Vac 30 Vdc or 200 mA at 120 Vdc Termmnals nme Wire clamping 24 to 12 AWG 0 2 to 2 5 mm conductors Dimensions een 75 mm 3 0 chitin 55 mm 2 2 aa annassa 113 mm 4 5 Shipping Weight 0 45 kg 1 Ib Environment Operating Temperature Altitude lt 1 000 m 3 2817 40 to 60 C 40 to 140 F 3 000 m 9 843 40 to 55 C 40 to 131 F 5 000 m 16 404 40 to 50 C 40 to 122 F Storage Temperature 55 to 80 C 67 to 160 F Humidity 85 Non Condensing Altitude 5 000 m 16 40
17. telfuse STARTCO SE GRM125 Power Dissipation At 125 Vdc Unfaulted 1 6 W Ground Fault 3 2 W maximum Shipping Weight 300 g 0 7 Ib SE GRM250 Power Dissipation At 250 Unfaulted 3 1 W Ground Fault 6 3 W maximum Shipping Weight 500 g 1 6 Ib SE GRM300 Power Dissipation At 300 Vdc Unfaulted 3 6 W Ground Fault 7 2 W maximum Shipping Weight 500 g 1 6 Ib SE GRM400 Power Dissipation At 400 Unfaulted 4 4 W Ground Fault 8 9 W maximum Shipping Weight 500 g 1 6 Ib SE GRM500 Power Dissipation At 500 Vdc Unfaulted 6 3 W Ground Fault 12 5 W maximum Shipping Weight 500 g 1 6 Ib SE GRM600 Power Dissipation At 600 Vdc Unfaulted 7 2 W Ground Fault 14 4 W maximum Shipping Weight 500 g 1 6 Ib SE GRM780 Power Dissipation At 780 Vdc Unfaulted 9 6 W Ground Fault 19 2 W maximum Shipping Weight 2 1 kg 4 5 Ib SE GRM1000 Power Dissipation At 1000 Vdc Unfaulted 12 5 W Ground Fault 25 0 W maximum Shipping Weight 2 1 kg 4 5 Ib SE 601 DC Ground Fault Monitor Page 12 Rev 2 B 073014 6 ORDERING INFORMATION SE 601 0 Conformal
18. tem Install a fuse rated to protect the test circuit The fixed test resistance can be sized to cause a ground fault current just above the trip level setting See Fig 10 For a reference of fault resistance values see Table 1 e Record the date and the results of the test on the attached test record form ro LEAKAGE ANALOG 8 OUTPUT PGA 05CV PGA 0500 FIGURE 9 Ground Fault Test Circuit WA Littelfuse Page 14 STARTCO SE 601 DC Ground Fault Monitor Rev 2 B 073014 UNGROUNDED DC SYSTEM LEAKAGE ANALOG 8 OUTPUT PGA 05CV PGA 0500 FIGURE 10 System Ground Fault Test TABLE 3 GROUND FAULT TEST RECORD DATE TEST RESULTS Retain this record for the authority having jurisdiction WA Littelfuse Page 15 STARTCO SE 601 DC Ground Fault Monitor Rey 2 B 073014 APPENDIX A SE 601 REVISION HISTORY MANUAL MANUAL PRODUCT REVISION RELEASE DATE REVISION REVISION NUMBER ON PRODUCT LABEL July 30 2014 2 B 073014 April 19 2013 2 A 041913 MANUAL REVISION HISTORY REVISION 2 B 073014 SECTION 5 Updated to include altitude and vibration specifications SECTION 8 Ground fault performance test added APPENDIX A Revision history updated REVISION 2 A 041913 SECTION 3 Fig 2 updated to include PGA 05CV SECTION 5 Environment section updated to include Fahren
19. tput relay In the fail safe mode the output relay energizes when the SE 601 is energized and the ground fault circuit is not tripped If tripped and the supply voltage is cycled the SE 601 will remain tripped with the trip relay de energized and a TRIP LED on until reset In the non fail safe mode the output energizes when a ground fault trip occurs In the non fail safe mode trip status is not retained in non volatile memory 2 1 2 RESET MODE Switch 2 is used to select autoreset or latching trips See Section 2 2 3 SE 601 DC Ground Fault Monitor Page 1 Rev 2 B 073014 2 2 FRONT PANEL CONTROLS 2 2 1 GROUND FAULT TRIP LEVEL The LEVEL mA selector switch is used to set the ground fault trip level Ground fault current is a function of fault resistance system voltage and the SE GRM series Ground Reference Module Table 1 lists the SE 601 trip levels and fault resistance values for 24 48 125 250 500 780 and 1000 Vdc systems 2 2 2 GROUND FAULT TRIP TIME The SE 601 has a definite time trip characteristic The TIME s selector switch is used to set the ground fault trip time 2 2 3 RESET If the Reset Mode switch is in the LATCHING position a trip remains latched until the RESET button is pressed or the remote reset terminals 6 and 7 are momentarily connected In the non fail safe mode cycling the supply voltage will also reset the SE 601 If the Reset Mode switch is in the AUTORESET position a trip
20. will reset when the fault is removed The reset circuit responds only to a momentary closure so that a jammed or shorted button will not prevent a trip The front panel RESET button is inoperative when remote reset terminals are connected 2 2 4 TEST The TEST button is used to test the ground fault circuit trip indication and the output relay When the TEST button is pressed for one second a test signal is applied to the ground fault detection circuit the circuit will trip both BUS and BUS TRIP LED s will light and the output relay will operate TABLE 1 SE 601 TRIP LEVELS AND FAULT RESISTANCE VALUES FAULT RESISTANCE kQ TRIP 24 V dc 48 Vdc 125 Vdc 250 Vdc 500 Vdc 780 1000 LEVEL SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM SYSTEM mA SE GRM024 SE GRM048 SE GRMI25 SE GRM250 SE GRM500 SE GRM780 SE GRM1000 1 11 5 22 3 60 0 120 0 240 0 374 2 480 0 2 5 5 11 0 28 7 57 5 115 0 179 2 230 0 3 3 5 7 0 18 3 36 6 73 3 114 2 146 7 4 2 5 5 0 13 1 26 2 52 5 81 7 105 0 5 1 9 3 8 10 0 20 0 40 0 62 2 80 0 6 1 5 3 0 7 9 15 8 31 7 49 2 63 3 8 1 0 2 0 5 3 10 6 21 3 32 9 42 5 10 0 7 14 3 7 75 15 0 23 2 30 0 15 0 3 0 6 1 6 3 3 6 7 10 2 13 3 20 0 1 0 2 0 6 1 2 2 5 3 7 5 0 Littelfuse STARTCO SE 601 DC Ground Fault Monitor 8 7 CONFIGURATION SWITCHES UNUSED OFF KEEP IN OFF POS UNUSED OFF KEEP IN OFF POS UNUSED OFF KEEP IN OFF POS CONFIGUR
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