3714 Kinnear Place Saskatoon, Saskatchewan Canada S7P 0A6 Ph: (306) 373-5505 Fx: (306) 374-2245 www.startco.ca SE-703 MAUAL EARTH-LEAKAGE MOITOR April 2, 2012 REVISIO 9 Copyright 2012 by Littelfuse Startco All rights reserved. Publication: SE-703-M Document: S95-C703-00000 Printed in Canada.
This page intentionally left blank.
Page i TABLE OF COTETS PAGE 1. General... 1 2. Operation... 1 2.1 Configuration-Switch Settings... 1 2.1.1 Relay Operating Mode... 1 2.1.2 Filter Selection... 1 2.2 Front-Panel Controls... 1 2.2.1 Earth-Leakage Trip Level... 1 2.2.2 Earth-Leakage Trip Time... 1 2.2.3 Reset... 1 2.2.4 Test... 1 2.3 Front-Panel Indication... 1 2.3.1 Power... 1 2.3.2 Trip... 1 2.3.3 CT Verification... 1 2.4 Analog Output... 3 2.5 Self Diagnostics... 3 3. Installation... 3 4. SE-703 Compatibility... 4 5. Technical Specifications... 10 6. Ordering Information... 12 7. Warranty... 12 FIGURE LIST OF FIGURES PAGE 1. SE-703 Outline and Mounting Details... 2 2. Typical Connection Diagrams... 3 3. Typical Three-Phase-Starter Connection... 4 4. EFCT-1 Outline and Mounting Details... 5 5. EFCT-2 Outline and Mounting Details... 6 6. EFCT-26 Outline and Mounting Details... 7 7. PMA-55 Panel-Mount Adapter... 8 8. PMA-60 Panel-Mount Adapter... 9 9. PGA-0500 Analog Percent Current Meter... 10 10. Earth-Fault-Test Circuit... 13 TABLE LIST OF TABLES PAGE 1. Trip-Feature Comparison... 4 2. Earth-Fault-Test Record... 13 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. 8. Performance Test... 13
Page ii This page intentionally left blank
Page 1 1. GEERAL The SE-703 is a microprocessor-based earth-leakage monitor for ac power supply systems incorporating earthfault current limitation. Its output relay can operate in the fail-safe or non-fail-safe mode for undervoltage or shunt-trip applications. The SE-703 has one output relay with isolated normally open and normally closed contacts for use in independent control circuits. Additional features include LED trip and power indication, latching trips with front-panel and remote reset, trip memory, test switch, self diagnostics, 0 to 5-V analog output, CT verification with LED indication, digital selector switches, and switch-selectable algorithms for fixed-frequency or variable-frequency applications. Earth-leakage current is sensed by an EFCT-series core-balance, earth-fault current transformer. The trip level of the earth-leakage circuit is digital-switch selectable from 25 to 500 ma. Trip time is digitalswitch selectable from 50 to 500 ms. The SE-703 is AS/ZS 2081:2002 compliant. 2. OPERATIO 2.1 COFIGURATIO-SWITCH SETTIGS See Fig. 1. 2.1.1 RELAY OPERATIG MODE Switch 1 is used to set the operating mode of the output relay. In the fail-safe mode, the output relay energizes when the earth-leakage circuit is not tripped. In the fail-safe mode, non-volatile memory retains the trip status of the SE-703. If tripped, and the supply voltage is cycled, the SE-703 will remain tripped, with the trip relay de-energized and the TRIP LED on, until reset. In the non-fail-safe mode, the output relay energizes when an earth-leakage trip occurs. In the non-fail-safe mode, trip status is not retained in non-volatile memory. 2.1.2 FILTER SELECTIO Switch 2 is used to select the filtering algorithm for a fixed-frequency (50/60 Hz) or variable-frequency application. The FIXED FREQUECY setting uses a DFT filter that allows lower trip levels to be used by rejecting harmonics that can cause nuisance tripping. The VARIABLE FREQUECY setting uses a peakdetection algorithm with a wider bandwidth for fault detection in variable-frequency drive applications. 2.2 FROT-PAEL COTROLS 2.2.1 EARTH-LEAKAGE TRIP LEVEL The LEVEL (ma) selector switch is used to set the earth-leakage trip level. For earth-leakage detection, the earth-leakage trip level must be substantially below the prospective earth-fault current. To avoid sympathetic tripping, the trip level must be above the charging current of the protected feeder. 2.2.2 EARTH-LEAKAGE TRIP TIME The SE-703 has a definite-time trip characteristic. The TIME (ms) selector switch is used to set the earthleakage trip time for coordination with upstream and downstream earth-fault devices. Coordination requires the same trip level for all earth-leakage devices in a system and the trip time to progressively increase upstream. The amount of equipment removed from the system will be a minimum if the first earth-leakage device to operate is the one immediately upstream from the fault. 2.2.3 RESET A trip remains latched until the RESET switch is pressed or the remote-reset terminals (6 and 7) are momentarily connected. In the non-fail-safe relay operating mode, cycling the supply voltage will also reset the SE-703. The reset circuit responds only to a momentary closure so that a jammed or shorted switch will not prevent a trip. The front-panel RESET switch is inoperative when the remote-reset terminals are connected. 2.2.4 TEST The TEST switch is used to test the earth-leakage circuit, the indication, and the output relay. When the TEST switch is pressed for one second, a test signal is applied to the earth-leakage-detection circuit, the circuit will trip, the TRIP LED will light, and the output relay will operate. 2.3 FROT-PAEL IDICATIO 2.3.1 POWER The green LED labeled PWR indicates presence of supply voltage. 2.3.2 TRIP The red LED labeled TRIP indicates a trip. A solid red LED indicates an earth-leakage trip and a flashing LED indicates a trip initiated by a CT fault. Two fast flashes of the TRIP LED indicate a diagnostic trip. See Section 2.5. 2.3.3 CT VERIFICATIO The green LED labeled CT indicates that an EFCTseries sensor is connected.
Page 2 AS/ZS 2081:2002 COMPLIAT ASSOCIATED CURRET TRASFORMERS EFCT-1 EFCT-5RF EFCT-8RF EFCT-2 EFCT-6RF EFCT-9RF EFCT-26 EFCT-7RF EFCT-10RF COFIGURATIO SWITCHES UUSED 5 OFF UUSED OFF UUSED OFF FILTER SELECTIO FIXED FREQUECY RELAY OPERATIG MODE FAIL-SAFE 4 3 KEEP I OFF POS. KEEP I OFF POS. KEEP I OFF POS. 2 VARIABLE FREQUECY 1 O-FAIL-SAFE 8.7 (0.34) 55.0 (2.17) 37.5 (1.48) OTE 2 UUSED OFF UUSED OFF COFIGURATIO SWITCHES 5 KEEP I OFF POS. 4 KEEP I OFF POS. 61.2 (2.41) 75.0 (2.95) UUSED OFF FILTER SELECTIO FIXED FREQUECY RELAY OPERATIG MODE FAIL-SAFE 3 KEEP I OFF POS. 2 VARIABLE FREQUECY 1 O-FAIL-SAFE OTE 5 S1 S2 RS CT RESET AALOG OUTPUT 1 2 3 4 5 6 7 8 TOP 55.0 (2.17) MOUTIG DETAIL 118.0 (OTE 3) (4.65) 110.0 (4.33) 6.3 (0.25) 6.9 (0.27) LITTELFUSE STARTCO EARTH-LEAKAGE MOITOR SE-703 PWR CT TRIP 80 60 45 30 110 25 150 200 300 500 LEVEL (ma) 250 200 150 100 300 350 400 450 500 50 TIME (ms) 75.0 (2.95) TEST RESET FROT OTES: SIDE 9 10 11 12 13 14 15 16 L2 L1 1. DIMESIOS I MILLIMETRES (ICHES). 2. MOUTIG SCREWS: M4 OR 8-32. 3. OVERALL DIMESIO WHE MOUTED O DI E50022 35 mm x 7.5 mm TOP-HAT RAIL. 4. ADJUSTMET KOBS ARE REMOVABLE. BOTTOM 5. COFIGURATIO SWITCHES SHOW I DEFAULT POSITIO. FIGURE 1. SE-703 Outline and Mounting Details.
Page 3 2.4 AALOG OUTPUT The non-isolated, 0 to 5-V analog output indicates earthleakage current sensed by the EFCT. The output is 5 V when earth-leakage current is 500 ma. Use a PGA-0500 Analog Percent Current Meter to indicate earth-leakage current. See Figs. 2, 3, and 9. 2.5 SELF DIAGOSTICS A diagnostic trip is indicated by two fast flashes of the TRIP LED. It can be caused by a problem detected by an incorrect reading from non-volatile memory. Press RESET or cycle supply voltage. If the problem persists, consult Littelfuse Startco. 3. ISTALLATIO OTE: Mounting, terminal-block connections and wiring must conform to applicable local electrical codes. Check all applicable codes prior to installation This earth-leakage monitoring system consists of an SE-703 Earth-Leakage Monitor and an EFCT-series current sensor connected as shown in Figs. 2 and 3. An SE-703 can be surface or DI-rail mounted. See Fig. 1. Panel mounting requires a PMA-55 or PMA-60 Panel-Mount Adapter. See Figs. 7 and 8. A PMA-60 meets the AS/ZS 2081:2002 IP53 requirement. Use terminal 11 (L1) as the line terminal on ac systems or the positive terminal on dc systems. Use terminal 10 (L2/) as the neutral terminal on ac systems or the negative terminal on dc systems. Connect terminal 9 ( ) to ground. Pass the phase conductors through the EFCT window and position them in the centre of the opening for 4-wire and single-phase systems, also pass the neutral conductor through the EFCT window, see Figs. 2 and 3. Do not pass earth conductors through the EFCT window. In applications that require shields or drain wires to pass through the EFCT window, return them through the EFCT window before connecting them to earth. Connect the EFCT current sensor to terminals 4 and 5, connect the shield to terminal 5, and earth terminal 5. See Figs. 4, 5, and 6 for EFCT-series current-sensor dimensional drawings. Remove the connection to terminal 9 for dielectricstrength testing. Ø A EFCT Ø A EFCT L EFCT Ø B Ø B Ø C Ø C 14 4 5 L 4 5 S1 S2 11 L2 L1 10 13 14 14 4 5 SE-703 S1 3 PHASE, 4 WIRE COECTIO S2 SE-703 S1 1 PHASE COECTIO S2 15 ISOLATED COTACTS 16 REMOTE RESET 6 LEAKAGE V OPTIOAL PGA-0500 7 8 RS SE-703 RESET AALOG OUTPUT 3 PHASE, 3 WIRE COECTIO 9 FIGURE 2. Typical Connection Diagrams.
Page 4 Ø A EFCT Ø B Ø C L 4 5 S1 S2 13 14 15 ISOLATED COTACTS 16 STOP START 1M 1M O/L 11 L2 10 L1 REMOTE RESET OPTIOAL PGA-0500 6 7 LEAKAGE 8 V RS SE-703 RESET AALOG OUTPUT FIGURE 3. Typical Three-Phase Starter Connection. 4. SE-703 COMPATIBILITY The current SE-703 has been enhanced with the addition of non-volatile trip memory for the fail-safe relay operating mode. Prior to hardware revision 04, a mechanical flag was used instead of non-volatile trip memory. The current revision of the SE-703 can directly replace previous revision units. The hardware-revision number is listed on the SE-703 model/serial-number label affixed to the SE-703 enclosure. Both generations of SE-703 are compared in Table 1. The SE-703 was previously available with SE-703-01 120-Vac and SE-703-02 240-Vac control-voltage options. These have been discontinued. An SE-703-0U universal 120/240-Vac/Vdc unit can directly replace an SE-703-01 or SE-703-02. Device state after supply voltage cycled when tripped (earth-fault removed) 9 TABLE 1. TRIP-FEATURE COMPARISO HARDWARE REVISIO 00-03 04 LED trip indication Yes Yes Mechanical flag trip indication Yes o on-volatile trip memory o Yes Trip LED: Off Fail-safe Trip relay: Energized Trip flag: Red on-fail-safe Trip LED: Off Trip relay: De-energized Trip flag: Red Trip LED: On Trip relay: De-energized Trip LED: Off Trip relay: De-energized
R R Page 5 P 1 S 1 S 2 OTES: 1. DIMESIOS I MILLIMETRES (ICHES). 2. MOUTIG SCREWS: M4 OR 8-32. 3. PRESS MOUTIG FEET I PLACE USIG ISTALLATIO TOOL PROVIDED. 20.5 (0.81) 121.0 (4.76) 121.0 (4.76) 80.0 (3.15) 30.0 (1.18) 56.0 (2.21) 46.0 (1.81) OTE 2 M5 SCREWS TOP 25.0 (0.98) MOUTIG DETAIL 30.0 (1.18) EFCT-1 EARTH FAULT CT 600 V CLASS, ISULATIO CLASS A C LR 53428 US 138.0 MAX (5.43) 82.0 (3.23) 69.8 (2.75) EFCT - 1FC FLUX CODITIOER (OPTIOAL) 5.0 (0.20) Ø RECESSED FOR 8-mm HEX UT 1.0 (0.04) DEEP 22.0 (0.87) 126.0 (4.96) 5.5 (0.22) 110.0 (4.33) FROT 5.5 (0.22) 56.0 (2.21) SIDE FIGURE 4. EFCT-1 Outline and Mounting Details.
Page 6 LR 53428 C R US OTES: 1. DIMESIOS I MILLIMETRES (ICHES) 2. MOUTIG SCREWS: M5 OR 10-32. EFCT-2 EARTH FAULT CT 600 V CLASS, ISULATIO CLASS A R 215.0 (8.46) 26.5 (1.04) 215.0 (8.46) 162.0 (6.38) 64.0 (2.52) 31.0 (1.22) P2 S1 S P 2 1 52.3 (2.06) M5 OR 10-32 TAP TOP 25.0 (0.98) M5 SCREWS MOUTIG DETAIL 31.0 (1.22) S1 P1 236 MAX (9.29) 139.7 (5.50) FLUX CODITIOER (ICLUDED) BODIG SCREW 5.0 (0.20) DIA 60.0 (2.36) 215.0 (8.46) 8.5 (0.33) 198.0 (7.80) 8.5 (0.33) FROT SIDE FIGURE 5. EFCT-2 Outline and Mounting Details.
R R Page 7 17.0 (0.67) 68.0 (2.68) 68.0 (2.68) 34.0 (1.34) 26.5 (1.04) P2 S1 S P 2 1 52.5 (2.07) 42.6 (1.68) M4 OR 8-32 TAP M5 SCREWS 110.0 MAX (0.43) TOP 25.0 (0.98) MOUTIG DETAIL 26.5 (1.04) EFCT-26 EARTH FAULT CT 600 V CLASS, ISULATIO CLASS A LR 53428 C US 72.0 (2.83) 26.0 (1.02) 4.0 (0.16) Ø RECESSED FOR 7-mm HEX UT 3.0 (0.12) DEEP 34.0 (1.34) 7.0 (0.87) 5.0 (0.20) 58.0 (2.28) FROT 5.0 (0.20) 52.5 (2.07) SIDE MOUTIG FOOT ISTALLATIO TOOL OTES: 1. DIMESIOS I MILLIMETRES (ICHES). 2. PRESS MOUTIG FEET I PLACE USIG ISTALLATIO TOOL PROVIDED (DETAIL A ) 3. MOUTIG SCREWS: M4 OR 8-32. DETAIL A FIGURE 6. EFCT-26 Outline and Mounting Details.
Page 8 85.0 (3.35) PAEL THICKESS 1.6 (0.06) TO 4.8 (0.19) 110.0 (4.33) 6-32 42.5 (1.67) LITTELFUSE STARTCO EARTH-LEAKAGE MOITOR PWR CT TRIP SE-703 110 80 150 60 200 45 300 30 500 25 LEVEL (ma) 300 250 350 200 400 150 450 100 500 50 TIME (ms) 85.0 (3.35) 6-32 75.0 (2.95) TEST RESET FROT VIEW BRACKET SIDE VIEW 55 mm (2.2) WIDE MOITOR 6.0 (0.24) 85.0 (3.35) 72.0 (2.83) 60.0 (2.36) 6.0 (0.24) 9.5 (0.37) ISTALLATIO ISTRUCTIOS: 42.5 (1.67) 30.0 (1.18) 2.0 (0.08) RAD MAXIMUM 4.0 (0.16) DIA 8.7 (0.34) DIA 4.3 (0.17) RAD ALTERATE COFIGURATIOS 60.0 (2.36) 79.0 (3.11) 1. REMOVE BEZEL AD LATCH MOITOR TO BRACKET 2. ISERT BRACKET THROUGH FROT OF PAEL CUTOUT AD SECURE WITH FLAT WASHERS AD LOCKUTS PROVIDED. 3. COECT WIRIG TO TERMIALS. 4. ISTALL BEZEL USIG 6-32 x 0.31 SCREWS PROVIDED. OTE: 9.5 (0.37) 1. DIMESIOS I MILLIMETRES (ICHES). PAEL CUTOUT DETAIL FIGURE 7. PMA-55 Panel-Mount Adapter.
Page 9 99.0 (3.90) 116.0 (4.57) PAEL THICKESS 1.6 (0.06) TO 4.8 (0.19) M4 44.0 (1.73) LITTELFUSE STARTCO EARTH-LEAKAGE MOITOR SE-703 PWR CT TRIP 110 80 150 60 200 45 300 30 500 25 LEVEL (ma) 300 250 350 200 400 150 450 100 500 50 TIME (ms) 88.0 (3.46) M4 75.0 (2.95) TEST RESET FROT VIEW TRASPARET COVER (OTE 2) BRACKET SIDE VIEW 55 mm (2.2) WIDE MOITOR 6.0 (0.24) 99.0 (3.90) 72.0 (2.83) 60.0 (2.36) 6.0 (0.24) 9.5 (0.37) ISTALLATIO ISTRUCTIOS: 2.0 (0.08) RAD MAXIMUM 1. WITH COVER REMOVED LATCH MOITOR TO BRACKET 44.0 (1.73) 30.0 (1.18) 4.5 (0.18) DIA 8.7 (0.34) DIA 4.3 (0.17) RAD 60.0 (2.36) 79.0 (3.11) 2. ISERT BRACKET THROUGH FROT OF PAEL CUTOUT AD SECURE WITH FLAT WASHERS AD LOCKUTS PROVIDED. 3. COECT WIRIG TO TERMIALS. ALTERATE COFIGURATIOS 4. ATTACH COVER USIG THUMB SCREWS PROVIDED. OTE: PAEL CUTOUT DETAIL 9.5 (0.37) 1. DIMESIOS I MILLIMETRES (ICHES). 1. MEETS EMA3, IP53. FIGURE 8. PMA-60 Panel-Mount Adapter.
Page 10 67.5 (2.657) R1.25(0.049) MAXIMUM 48.0 (1.890) 66.0 (2.598) 67.5 (2.657) OTES: 1. COVERSIO KIT FOR 0-5 V AALOG OUTPUT. SEE PGA-0500 DOCUMETATIO. 2. DIMESIO I MILLIMETRES (ICHES). TOP MOUTIG CUTOUT % 60 80 100 OTE 1 20 40 71.0 (2.795) 65.0 (2.559) 0 PGA-0500 AALOG % CURRET METER 1 ma FROT FIGURE 9. Analog Percent Current Meter. SIDE REAR 5. TECHICAL SPECIFICATIOS Supply: 0U Option...2.5 VA, 120 to 240 Vac, (+20, -55%) 50/60 Hz, 2.0 W, 100 to 240 Vdc, (+20, -25%) 0D Option...2.0 W, 12 to 30 Vdc, (+20, -25%) 0T Option...2.0 W, 40 to 55 Vdc, (+20, -25%) 03 Option...2.5 VA, 24 Vac, (+15%, -40%), 50/60 Hz Trip-Level Settings... 25, 30, 45, 60, 80, 110, 150, 200, 300, and 500 ma Trip-Time Settings... 50, 100, 150, 200, 250, 300, 350, 400, 450, and 500 ms Accuracies: (1) Trip Level (2)... + 0, -20% of setting Trip Time (3)... +0, -20 ms or +0, -20% of setting, whichever is larger Discrimination Time (4)... 75% of trip time setting, Minimum off time 25 ms Input: Algorithms... DFT Digital or Peak DFT 3 db Frequency Resp.. 32 to 86 Hz Peak 3 db Frequency Resp.. 20 to 420 Hz CT... EFCT Series Thermal Withstand: Continuous... 25 A Earth-Fault Current 1-Second... 400 A Earth-Fault Current Analog Output: Range... 0 to 5 V, 10 mv per ma Output Impedance... 220 OTES: (1) (2) (3) (4) At 50 or 60 Hz. Maximum lead resistance of 2. Trip Time at 1.5 x trip-level setting. Per AS/ZS 2081.3:2002 Clause 3.3.8.
Page 11 Reset... Front-Panel Switch and Remote,.O. Contact Functional Test... Front-Panel Switch Output Relay: Contact Configuration... Isolated.O. and.c. Operating Mode... Fail-Safe or on-fail-safe CSA/UL Contact Rating... 8 A General Use, 250 Vac, 8 A Resistive, 30 Vdc Supplemental Contact Ratings: Carry Current... 8 A, maximum Break: 30 Vdc... 240 W Resistive, 170 W Inductive (L/R = 7 ms) 120 Vdc... 24 W Resistive, 17 W Inductive (L/R = 7 ms) ac... 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 Operating Mode...Latching only Terminals...Wire Clamping, 0.2 to 2.5 mm 2 conductors (24 to 12 AWG) Dimensions: Height... 75 mm (3.0") Width... 55 mm (2.2") Depth... 115 mm (4.5") Shipping Weight... 0.45 kg (1 lb.) Environment: Operating Temperature... -40 C to 60 C Storage Temperature... -55 C to 80 C Humidity... 85% on-condensing Surge Withstand... ASI/IEEE 37.90.1-1989 (Oscillatory and Fast Transient) EMC Tests: Verification tested in accordance with E 50263:2000 Conducted & Radiated Emissions CISPR 22:2008-09 / E55022:2010 Class A Electrostatic Discharge... IEC 61000-4-2, IEC 60255-22-2, 6 kv Contact Discharge 8 kv Air Discharge Radiated RF Immunity... IEC 61000-4-3, IEC 60255-22-3 10 V/m, 80-1000 MHz, 80% AM (1 khz) 10 V/m, 900 MHz, 200 Hz Pulse Modulated Fast Transient... IEC 61000-4-4, IEC 60255-22-4 4 kv on AC Mains and I/O lines Surge Immunity... IEC 61000-4-5, IEC 60255-22-5 2.0 kv Common Mode on AC Lines 1.0 kv Differential Mode on AC lines 2.0 kv Common Mode on I/O ports Conducted RF Immunity... IEC 61000-4-6, IEC 60255-22-6 10 Vrms, 0.15-80 MHz, 80% AM (1 khz) Magnetic Field... IEC 61000-4-8, E 61000-4-8 50 Hz and 60 Hz, 30 A/m 300 A/m Voltage Interruption... IEC 61000-4-29,IEC 60255-11 100% for 5, 10, 20, 50, 100 & 200 ms 3x each 1 MHz Burst... E 60255-22-1 1 kv Differential Mode 2.5 kv Common Mode Power Frequency... IEC 61000-4-16, IEC 60255-22-7 Class A 150V Differential Class A 300V Common Current Harmonics and Voltage Fluctuation IEC 61000-3-2 and IEC 61000-3-3 Class A RFI Compliance... FCC Part 15, Subpart B, Class A Unintentional Radiators Compliance... AS/ZS 2081:2002
Page 12 Certification... CSA, Canada and USA UL Listed Australia CE, European Union Complies to IEC 61010-1:2001 (2 nd Edition); E 61010-1:2001 (2 nd Edition) Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use Part 1. 6. ORDERIG IFORMATIO SE703-0 EFCT-9RF... Earth-Fault Current Transformer, 160-mm (6.3 ) window EFCT-10RF.. Earth-Fault Current Transformer, 200-mm (7.9 ) window For additional information and to order contact: sales@startco.com.au. 7. WARRATY The SE-703 Earth-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 price of an SE-703 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. U Universal 120/240- Vac/Vdc Supply D 12/24- Vdc Supply T 48-Vdc Supply 3 24-Vac Supply EFCT-1...Earth-Fault Current Transformer, 82-mm (3.2 ) window EFCT-2...Earth-Fault Current Transformer, with Flux Conditioner 139-mm (5.5 ) window EFCT-26... Earth-Fault Current Transformer, 26-mm (1.0 ) window EFCT-1FC... Flux Conditioner, 70 mm (2.7 ) Window PGA-0500... Analog Percent Current Meter PMA-55... Panel-Mount Adapter, EMA 1 PMA-60... Panel-Mount Adapter, EMA 3, IP53 PMA-3... Adapter Plate, GEC/MCGG PMA-6... Adapter Plate, FPL-GFRM PMA-15... Adapter Plate, MGFR Consult factory for custom mounting adapters. Startco Pty. Australian Current Transformers EFCT-5RF...Earth-Fault Current Transformer, 60-mm (2.4 ) window EFCT-6RF...Earth-Fault Current Transformer, 85-mm (3.3 ) window EFCT-7RF...Earth-Fault Current Transformer, 112-mm (4.4 ) window EFCT-8RF...Earth-Fault Current Transformer, 140-mm (5.5 ) window
Page 13 8. PERFORMACE TEST Some jurisdictions require periodic earth-fault performance tests. A test-record form is provided for recording the date and the results of the performance tests. The following ground-fault system tests are to be conducted by qualified personnel: a) Evaluate the interconnected system in accordance with the overall equipment manufacturer s detailed instructions. b) Verify proper location of the earth-fault current transformer. Ensure the cables pass through the earth-fault-current-transformer window. This check can be done visually with knowledge of the circuit. The connection of the current-transformer secondary to the SE-703 is not polarity sensitive. c) Verify that the system is correctly earthed and that alternate earth paths do not exist that bypass the current transformer. High-voltage testers and resistance bridges can be used to determine the existence of alternate earth paths. d) Verify proper reaction of the circuit-interrupting device in response to a simulated or controlled earth-fault current. To simulate earth-fault current, use CT-primary current injection. Fig. 10 shows a test circuit using an SE-400 Ground-Fault-Relay Test Unit. The SE-400 has a programmable output of 0.5 to 9.9 A for a duration of 0.1 to 9.9 seconds. Fig. 10 shows the use of resistors that reduce the injected current to 10% of the SE-400 setting. Set the test current to 120% of the SE-703 setting. Inject the test current through the current-transformer window for at least 2.5 seconds. Verify that the circuit under test has reacted properly. Correct any problems and re-test until the proper reaction is verified. e) Record the date and the results of the test on the attached test-record form. FROM POWER SOURCE REMOTE TEST I TEST 11 R1 L 10 R2 11 3 L 5 1 8 9 EFCT 4 5 S1 S2 L1 L2/ OP1 L1 L2 RMT1 RMT2 SE-703 SE-400 R1 = 10 Ω, 10 W, 1% R2 = 0.1 Ω, 10 W, 1% I TEST = 1/10 SE-400 SETTIG OP2 FIGURE 10. Earth-Fault-Test Circuit. DATE 12 LOAD TABLE 2. EARTH-FAULT-TEST RECORD TEST RESULTS OTE: Do not inject test current directly into CT-input terminals 4 and 5. Retain this record for the authority having jurisdiction.
Page 14