Table of Contents
Related Manuals for Littelfuse SE-330
Summary of Contents for Littelfuse SE-330
- Page 1 Tel: (800) 832-3873 Email: relays@littelfuse.com www.littelfuse.com/SE-330 SE-330 MANUAL NEUTRAL-GROUNDING-RESISTOR MONITOR REVISION 11-A-063018 Copyright © 2018 by Littelfuse All rights reserved. Document Number: PM-1200-EN...
- Page 2 Page i SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 This page intentionally left blank.
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Page 3: Table Of Contents
4.2 USB Interface ............25 4.3 Network Communications ........26 DISCLAIMER 5 TROUBLESHOOTING ............27 Specifications are subject to change without notice. Littelfuse, Inc. is not liable for contingent or consequential damages or for 6 TECHNICAL SPECIFICATIONS ........29 expenses sustained as result of incorrect application, incorrect 6.1 SE-330 ..............29... - Page 4 Page iii SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 This page intentionally left blank.
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Page 5: General
TRIP LEVEL setting and if system charging current. Set the pick-up current of ground-fault NGR current is less than 5% of the CT rating, the SE-330 will trip on devices at or below 50% of the NGR let-through current. resistor fault. If the resistor-fault circuit is tripped and the neutral... -
Page 6: Ngr Short Detection
• Dual Ethernet ports are available with support for fiber-optic component of neutral voltage (V and RJ45 interfaces. The SE-330 will trip and indicate a resistor fault if neutral voltage • An added IEC61850 protocol. is greater than the V... -
Page 7: Pulse-Period Adjustment
See Section 2.3 for detailed pulsing operation information. NOTE: For pulsing configuration, set switch S1 to K1 = PULSING Pulse period is the cycle time of relay K1 when the SE-330 is and install an external pulse-enable switch. configured for pulsing operation. Pulse period is adjustable from 1.0 to 3.0 seconds with a fixed duty cycle of 50 percent. -
Page 8: Configuration Settings
4.1.2 for upgrade instructions. 2.1.5.1 Relay K1 Function (S1) NOTE: An upgrade causes an SE-330 restart and this may cycle the Set switch S1 to K1 = TRIP to assign the trip function to relay K1 output relays. and to activate switch S2. With the default setting, relay K1 will change state when a resistor-fault or ground-fault trip occurs. -
Page 9: Calibration
SE-MON330 software or network resistor is changed. communications. NOTE: If the SE-330 is not calibrated and is supplied from the load When a trip occurs with latching operation selected, the side of the breaker (non-fail-safe mode), calibrate it within the... -
Page 10: Relay K1 Led
2.8 Diagnostic LED Outline and panel-cutout dimensions for the SE-330 are shown in Fig. 4. To panel mount the SE-330, insert it through the panel The DIAGNOSTIC LED is used to annunciate trips without cutout and secure it with the four included 8-32 locknuts and flat individual LED indication. -
Page 11: Se-330 Connection Diagram
CONNECTION 5. SEE SECTION 3.4 FOR ISOLATED-GROUND NOTE 14 ANALOG OUTPUT CONNECTION. REMOTE NOTE 15 RESET RESET 6. RELAY CONTACTS SHOWN WITH SE-330 PGA-0520 DE-ENERGIZED. PULSE PULSE ENABLE ENABLE 7. OPTIONAL N.C. K4 AVAILABLE. USB PORT NOTE 9 8. LOOP-POWERED CONNECTION USES TERMINALS 19 AND 20 ONLY. -
Page 12: Se-330 Outline And Panel-Mounting Details
F A U L T RESET FRONT VIEW SIDE VIEW REAR VIEW 92.7 (3.65) NOTES: 76.2 (0.32) (3.00) 1. DIMENSIONS IN MILLIMETRES (INCHES). R=4.8 (0.19) MAXIMUM 4.75 (0.187) DIA 4 LOCATIONS PANEL-MOUNT CUTOUT FIG. 4. SE-330 outline and panel-mounting details. -
Page 13: Se-330 Outline And Surface-Mounting Details
3. ENSURE THAT RETAINERS ARE AGAINST MONITOR BODY AND TIGHTEN RETAINER SCREWS. REMOVAL 1. LOOSEN RETAINER SCREWS, SLIDE RETAINERS AWAY FROM MONITOR BODY AND TIGHTEN RETAINER SCREWS. BEZEL OUTLINE 2. PULL MONITOR FORWARD. ADAPTER PANEL OUTLINE MOUNTING DETAIL FIG. 5. SE-330 outline and surface-mounting details. -
Page 14: Se-Ip65Cvr-G Weatherproof Cover Outline
Page 10 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 TO PREVENT UNAUTHORIZED ENTRY: 1. USE WIRE SEAL THROUGH HOLES IN WEATHERPROOF COVER ASSEMBLY, OR 2. SECURE WITH THE PLASTIC THREAD FORMING SCREW SUPPLIED IN KIT. TOP VIEW SHOWN HOLE FOR WITH SEAL WIRE SEAL 127.0... -
Page 15: Se-Ip65Cvr-G Weatherproof Cover Installation
DARK GREY PVC PANEL. INSTALL O-RING INTO THE GROOVE IN THE REAR OF WEATHERPROOF WINDOW ASSEMBLY. FRONT PANEL DETAILS NOT SHOWN. INSERT ASSEMBLY INTO PANEL AND FASTEN WITH THE HARDWARE PROVIDED WITH THE SE-330. FIG. 7. SE-IP65CVR-G weatherproof cover installation. -
Page 16: Sensing Resistor
Sensing-resistor terminal R and its ER-5KV with moisture-resistant terminal covers. Use an ER-5WP in connection to SE-330 terminal R, including interposing terminal applications in which it might be exposed to moisture. The ER-15KV, blocks, must remain dry. -
Page 17: Se-Mre-600 Moisture-Resistant Enclosure Outline
Page 13 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 GASKET 120.4 120.4 (4.74) (4.74) ENCLOSURE - TOP VIEW COVER - INSIDE VIEW (COVER REMOVED) 82.5 (3.25) (0.38) M6 OR 0.25-20 120.4 (4.74) ENCLOSURE - TOP VIEW MOUNTING DETAIL 120.4 (4.74) NOTES: 1. DIMENSIONS IN MILLIMETRES (INCHES). -
Page 18: Er-600Vc Installed In Se-Mre-600
Page 14 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 NOTE 2 MOUNTING MOUNTING SCREWS SCREWS FOUR LOCATIONS NOTE 4 4 LOCATIONS NOTE 4 NOTE 3 E R - 6 0 0 V C SENSI NG RES I STOR Ω 20 K 6 0 0 V AC M A X... -
Page 19: Er-5Kv Sensing Resistor
Page 15 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 RATINGS: 381.0 MAXIMUM VOLTAGE 2,500 Vac RATINGS: (15.00) 381.0 21.0 MAXIMUM CURRENT 125 mA 2,500 Vac MAXIMUM VOLTAGE ..RESISTANCE 20 kΩ (15.00) (0.83) 21.0 MAXIMUM CURRENT... -
Page 20: Er-5Wp Sensing Resistor
Page 16 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 RATINGS: RATINGS: MAXIMUM VOLTAGE 2,500 Vac 381.0 MAXIMUM VOLTAGE 2,500 Vac MAXIMUM CURRENT 381.0 125 mA MAXIMUM CURRENT 125 mA (15.00) ..21.0 RESISTANCE 20 kΩ (15.00) . -
Page 21: Er-15Kv Sensing Resistor
Page 17 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 FIG. 13. ER-15KV sensing resistor. -
Page 22: Er-25Kv Sensing Resistor
Page 18 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 780.0 (30.70) 780.0 RATINGS: (30.70) MAXIMUM VOLTAGE 14,400 Vac MAX VOLTAGE 14,400 Vac ..RATINGS: MAX CURRENT 144 mA C A U T I O N... -
Page 23: Er-35Kv Sensing Resistor
Page 19 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 RATINGS: RATINGS: MAX VOLTAGE 22,000 Vac 22,000 Vac MAXIMUM VOLTAGE 22,000 Vac MAXIMUM VOLTAGE ..MAX CURRENT 220 mA 220 mA MAXIMUM CURRENT 220 mA MAXIMUM CURRENT . -
Page 24: Ground-Fault Ct
5% of its current rating. CT-primary current- injection testing is recommended to verify trip levels below 5% of the CT-primary rating. See Section 9.4. Littelfuse Startco current sensors with a 50-mA-secondary rating, such as the ELCT5-x and ELCT30-series, are designed for use at low levels and respond linearly to 2% current rating. -
Page 25: Elct5-88 And Elct30-88 Ground-Fault Current Sensors
115.59 [4.551] Page 21 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 137.69 [5.421] 7.62 [0.300] 87.73 [3.454] 115.59 [4.551] 137.69 [5.421] 7.62 TOP VIEW AND MOUNTING DETAIL [0.300] FRONT VIEW UNLESS NOTED DIMENSIONS A 87.73 TOLERANCES: [3.454] FRACTIONAL ANGULAR: 1 MATERIAL TWO PLACE D THREE PLACE D 7.62... -
Page 26: Elct5-31 And Elct30-31 Ground-Fault Current Sensors
[2.204) Page 22 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 72.64 [2.860] 31.56 [1.243] 55.97 7.62 [2.204) [ 0.300 72.64 [2.860] 31.56 [1.243] 7.62 [ 0.300] TOP VIEW AND MOUNTING DETAIL FRONT VIEW UNLESS NOTED OTHER DIMENSIONS ARE IN IN TOLERANCES: FRACTIONAL 1/64 7.62... -
Page 27: Rk-332 Remote Indication And Reset
Page 23 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 MILLIMETERS FIG. 18. RK-332 remote indication and reset. FIG. 19. PGA-0520 analog percent current meter. -
Page 28: Isolated Ground Connection
If the G terminals on the sensing resistor and the SE-330 are connected to an isolated ground, then the SE-330 will be exposed to the GPR. If the GPR is greater than the terminal-block rating, then the SE-330 must be isolated from station ground and precautions must be taken with the power supply and the trip contacts. -
Page 29: Data Interfaces
NOTE: The maximum microSD card storage capacity is 32 GB for SE-330 hardware revision 16 and higher. The maximum microSD NOTE: SD card performance may vary by manufacturer, model, card storage capacity is 4 GB for SE-330 hardware revision 15 and and with varying environmental conditions. The included microSD lower. -
Page 30: Network Communications
NOTE: SE-330 hardware revisions 10 and later include an internal rechargeable battery that powers the real-time clock. Please consult local regulations regarding the use of batteries in electrical equipment. The SE-330 battery is not designed for user service or removal; please contact Littelfuse with any questions regarding battery removal. -
Page 31: Troubleshooting
: No Change; RF LED : ON; Assigned Relay: Trip Remote Trip 1 L - 2 S - 1 L The SE-330 was tripped by a signal from network communications. Press RESET to clear the trip. DIAGNOSTIC LED flash code Critical diagnostic code. - Page 32 : No Change; RF LED : No Change; Assigned Relay: No Change DIAGNOSTIC LED = solid red SE-330 processor failed to start. Cycle supply. If problem persists, consult Littelfuse. K1: De-energized. Pressing RESET does not Trip condition is still present. Locate and correct.
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Page 33: Technical Specifications
Page 29 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 6. TECHNICAL SPECIFICATIONS NGR Short Detection: Nominal NGR Resistance ....15 to 2,000 Ω, 166 Ω 6.1 SE-330 min for 100 kΩ Supply: sensing resistors Option 0 .......... 30 VA, 120 to 240 Vac NGR Short Trip Level .......10 to 70% of the nominal... - Page 34 Page 30 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 Duty Cycle ........50% Range ..........4 to 22 mA Time Accuracy .........10% of setting Loop Voltage ........8 to 36 Vdc Trip/Pulsing Relay K1 Contacts: Load ..........500 Ω (max with Configuration ........N.O. (Form A) 24-Vdc supply) Operating Mode ......
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Page 35: Sensing Resistors
Page 31 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 Voltage Interruption ....... IEC 61000-4-11, EMC Tests: IEC 61000-4-29 Verification tested in accordance with IEC 60255-26:2013. 0% for 10, 20, 30, 50 ms (dc) Radiated and Conducted 0% for 0.5, 1, 2.5, Emissions ........CISPR 11:2009,... -
Page 36: Current Sensors
Maximum Voltage ......2,500 Vac Maximum Current ......125 mA NOTES: Resistance ........20 kΩ Thermal .......... Continuous Electrical specifications have been verified at a Littelfuse lab. Torque: Terminal N: 6.3 Current Sensors 10-32 Insert ....... 5.6 N m (50 lbf in.) - Page 37 Temperature ........-55 to 60°C (-67 to ELCT30-88: 140°F) Current Ratio ........30:0.05 A Insulation ........600-V Class Electrical specifications have been verified at a Littelfuse Window Diameter ......88 mm (3.46 in.) lab. Shipping Weight ......0.91 kg (2 lb) Certifications ........cUL, CE ELCT5-31: Current Ratio ........
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Page 38: Ordering Information
RK-332 ..........Remote indication and reset, includes two 120-V pilot lights, a reset push button, NOTE: Please refer to the SE-330 Product Change Notice (PCN) and legend plates document for updated ordering information and new revision SE-IP65CVR-G ........ Hinged transparent cover, details, available at www.littelfuse.com/se-330. -
Page 39: Warranty
Littelfuse will (at the choice of Littelfuse) repair, replace, or NOTE: Use an isolation transformer if the test-voltage source refund the original purchase price of an SE-330 that is determined does not provide dc continuity for the SE-330 resistance-measuring by Littelfuse to be defective if it is returned to Littelfuse, freight circuit. -
Page 40: Analog-Output Test
Ensure the cables pass through the ground-fault-current- sensor window. This check can be visually conducted with knowledge of the circuit. The connection of the current-sensor secondary to the SE-330 is not polarity sensitive. • Verify that the system is correctly grounded and that alternate FIG. -
Page 41: Appendix A Se-330 Revision History
Page 37 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 APPENDIX A SE-330 REVISION HISTORY MANUAL RELEASE PRODUCT REVISION MANUAL REVISION FIRMWARE VERSION DATE (REVISION NUMBER ON PRODUCT LABEL) 3.00 June 30, 2018 11-A-063018 2.60 October 18, 2017 10-P-101817 2.60 December 7, 2016 10-N-120716 2.55... - Page 42 Page 38 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 REVISION 10-M-092116 SECTION 4 Firmware upgrade instructions updated. APPENDIX A Revision history updated. REVISION 10-L-063016 SECTION 4 Section 4.1.2 updated. SECTION 6 microSD storage capacity increased to 32 GB. RCM certification added. REVISION 10-K-090815 SECTION 4 Section 4.1.2 updated.
- Page 43 USB communications specifications added. Resistor-fault accuracy changed. microSD memory card specifications added. SECTION 7 Ordering information updated. SE-330-SMA surface mount adapter listed as an accessory only. APPENDIX A Added revision history. HARDWARE REVISION HISTORY HARDWARE REVISION 17A Additional EMC filter capacitors added.
- Page 44 SE-330 Neutral-Grounding-Resistor Monitor Rev. 11-A-063018 HARDWARE REVISION 10 SE-330 platform updated to include USB and microSD interfaces, programmable trip level (MEM) feature, and ability to add future options. Real-time clock and rechargeable battery added. Dual cable and fiber Ethernet ports added.