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3714 Kinnear Place
ENCLOSED NEUTRAL-GROUNDING-RESISTOR MONITOR
Document Number: PM-1230-EN
Printed in Canada.
Arrow.com.
Downloaded from
Saskatoon, SK
Canada
S7P 0A6
NGRM-ENC MANUAL
Revision 0-B-030515
NGRM-ENC
CONTROL
PHASE
PHASE
POWER
A
B
LEAKAGE
GROUND
CURRENT
FAULT
RESISTOR
FAULT
RESET
OFF
ON
PULSE
ENABLE
USB
Copyright © 2015 by Littelfuse Startco
All rights reserved.
Ph: (306) 373-5505
Fx: (306) 374-2245 www.littelfuse.com/relayscontrols
PHASE
C
LITTELFUSE STARTCO
NEUTRAL-GROUNDING-RESISTOR
MONITOR
GROUND
FAULT
10
8
6
4
2
GF TRIP LEVEL
(% CT RATING)
0.5 0.7 1.0
0.4
0.3
0.2
0.1
GF TRIP TIME (s)
NGRM-ENC
PHASE
A
SE-330
LEAKAGE
CURRENT
RESISTOR
FAULT
TRIP
DIAGNOSTIC
TRIP
CALIBRATED
RELAY K1
20
200
40
170
340
60
130
800
POWER
80
100
1200
100
60
1700
MEM
20
2000
V TRIP LEVEL
N
(
20 K
Ω
100 K
Ω
)
S5
V x 1
N
V x 5
N
1.8 2.0 2.2
CAL
2.0
1.6
2.4
3.0
1.4
2.6
5.0
1.2
2.8
10.0
1.0
3.0
PULSE PERIOD (s)
OFF
RESET
ENABLE
PHASE
PHASE
B
C
ON
PULSE
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Table of Contents
Related Manuals for Littelfuse Startco NGRM-ENC
Summary of Contents for Littelfuse Startco NGRM-ENC
- Page 1 V x 5 0.5 0.7 1.0 1.8 2.0 2.2 RESET 10.0 GF TRIP TIME (s) PULSE PERIOD (s) RESET PULSE PULSE ENABLE ENABLE Copyright © 2015 by Littelfuse Startco All rights reserved. Document Number: PM-1230-EN Printed in Canada. Arrow.com. Downloaded from...
- Page 2 Page i NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 This page intentionally left blank. Arrow.com. Downloaded from...
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Page 3: Table Of Contents
ISCLAIMER ECTION Specifications are subject to change without notice. General ..............1 Littelfuse Startco is not liable for contingent or 1.1 SE-325 Models ............. 1 consequential damages, or for expenses sustained as a 1.2 SE-330 Models ............. 1 result of incorrect application, incorrect adjustment, or a malfunction. - Page 4 Page iii NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 This page intentionally left blank. Arrow.com. Downloaded from...
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Page 5: Se-325 Models
Resistor (NGR) Monitor series is a Type 4X enclosure NGR-monitor trip state, and a green Control Power LED. housing a Littelfuse Startco SE-325 or SE-330 Neutral- Reset latched trips by pressing the Reset button when the Grounding-Resistor Monitor and optional accessories that trip condition is no longer present. -
Page 6: Type 4X Enclosure
EUTRAL ROUNDING are shared by the CPT connections for models so ESISTOR AND URRENT RANSFORMER equipped. For all models, connect NGRM-ENC terminal R to an ER-series sensing resistor terminal R. Follow SE-325 or 3.5 R ELAY- UTPUT ONNECTIONS SE-330 manual guidelines for wire size selection. See For external alarm or trip indication and protection, Figs. - Page 7 GF TRIP TIME (s) PULSE PERIOD (s) RESET PULSE ENABLE 264.0 406.2 (10.40) (16.00) SIDE FRONT NOTES: 1. DIMENSIONS IN MILLIMETRES (INCHES). 2. PANEL-MOUNTED SE-330 MODEL SHOWN. 330.5 (13.00) REAR (MOUNTING DETAIL) FIGURE 1. NGRM-ENC Outline and Mounting Details. Arrow.com. Downloaded from...
- Page 8 Page 4 NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 OPTIONAL OPTIONAL INCOMING INCOMING 120V 480V/600V BY CUSTOMER BY CUSTOMER ØA ØB ØC 0.5 A 0.5 A 0.5 A *PHASE C *PHASE B *PHASE A 600V 480V *EL3100 600/480 120/240 150 VA...
- Page 9 Page 5 NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 OPTIONAL OPTIONAL INCOMING INCOMING 120V 480V/600V BY CUSTOMER BY CUSTOMER ØA ØB ØC 0.5 A 0.5 A 0.5 A *PHASE C *PHASE B *PHASE A 600V 480V *EL3100 600/480 120/240 150 VA...
- Page 10 0.5 A 600V ØC(F4) 0.5 A 600V SHLD 150 VA INTERIOR NGRM-ENC CONTROL PHASE PHASE PHASE POWER GROUND FAULT RESISTOR FAULT RESET SIDE FRONT NOTE: 1. SHOWN WITH ALL OPTIONS AVAILABLE. FIGURE 4. SE-325 Model (NGRM-ENC-100-01) Interior/Exterior Details. Arrow.com. Downloaded from...
- Page 11 S E - 3 2 5 N G R M O N I T O R L(F1) 0.8 A 600V ØA(F2) 0.5 A 600V ØB(F3) 0.5 A 600V ØC(F4) 0.5 A 600V SHLD 150 VA FIGURE 5. SE-325 Model (NGRM-ENC-100-01) Interior Details. Arrow.com. Downloaded from...
- Page 12 1. T1 IS SET FOR 600V INCOMING. FOR 480V SE-325(R) INCOMING, MOVE F3-TO-T1 CONNECTION FROM T1H3 TO T1H2. 2. DESIGNATORS WITH LEADING “*” ARE OPTIONAL. 3. MINIMUM SUPPLY CONDUCTOR RATING 90ºC. 4.DASHED LINES INDICATE FIELD WIRING. FIGURE 6. SE-325 Model (NGRM-ENC-XX0-XX) Wiring Label. Arrow.com. Downloaded from...
- Page 13 600V SHLD 150 VA INTERIOR NGRM-ENC CONTROL PHASE PHASE PHASE POWER LEAKAGE GROUND CURRENT FAULT RESISTOR FAULT RESET PULSE ENABLE SIDE FRONT NOTE: 1. SHOWN WITH ALL OPTIONS AVAILABLE. FIGURE 7. SE-330 Surface-Mount Model (NGRM-ENC-XX0-21) Interior/Exterior Details. Arrow.com. Downloaded from...
- Page 14 1.8 2.0 2.2 10.0 GF TRIP TIME (s) PULSE PERIOD (s) L(F1) 0.8 A 600V ØA(F2) RESET 0.5 A 600V ØB(F3) 0.5 A 600V ØC(F4) 0.5 A 600V SHLD 150 VA FIGURE 8. SE-330 Surface-Mount Model (NGRM-ENC-XX0-X1) Interior Details. Arrow.com. Downloaded from...
- Page 15 INCOMING, MOVE F3-TO-T1 CONNECTION SE-330(10) SE-330(8) FROM T1H3 TO T1H2. SE-330(11) 2. DESIGNATORS WITH LEADING “*” ARE ENCLOSURE SHLD OPTIONAL. SE-330(6) 3. MINIMUM SUPPLY CONDUCTOR RATING 90ºC. 4.DASHED LINES INDICATE FIELD WIRING. FIGURE 9. SE-330 Surface-Mount Model (NGRM-ENC-XX0-XX) Wiring Label. Arrow.com. Downloaded from...
- Page 16 V x 5 0.5 0.7 1.0 1.8 2.0 2.2 10.0 GF TRIP TIME (s) PULSE PERIOD (s) RESET PULSE ENABLE SIDE FRONT NOTE: 1. SHOWN WITH ALL OPTIONS AVAILABLE. FIGURE 10. SE-330 Panel-Mount Model (NGRM-ENC-XX1-21) Interior/Exterior Details. Arrow.com. Downloaded from...
- Page 17 FROM T1H3 TO T1H2. SHLD 2. DESIGNATORS WITH LEADING “*” ARE SE-330(6) OPTIONAL. ØC(F4) 3. MINIMUM SUPPLY CONDUCTOR RATING 0.5 A 90ºC. 600V 4.DASHED LINES INDICATE FIELD WIRING. SHLD 150 VA FIGURE 11. SE-330 Panel-Mount Model (NGRM-ENC-XX1-X1) Interior Details. Arrow.com. Downloaded from...
- Page 18 INCOMING, MOVE F3-TO-T1 CONNECTION SE-330(11) ENCLOSURE FROM T1H3 TO T1H2. SHLD 2. DESIGNATORS WITH LEADING “*” ARE SE-330(6) OPTIONAL. 3. MINIMUM SUPPLY CONDUCTOR RATING 90ºC. 4.DASHED LINES INDICATE FIELD WIRING. FIGURE 12. SE-330 Panel-Mount Model (NGRM-ENC-XX1-XX) Wiring Label. Arrow.com. Downloaded from...
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Page 19: Technical Specifications
Width ....... 465 mm (18.3”) NGRM-ENC-3XX-X0, Depth ....... 309 mm (12.2”) NGRM-ENC-5XX-X0, NGRM-ENC-7XX-X0, Shipping Weight: NGRM-ENC-9XX-X0 NGRM-ENC-XXX-XX ..13.6 kg (30 lb) maximum EL3100 ....... 2 mA, 480/600 Vac, 60 Hz, Enclosure ......... Polyester, Lockable 3-phase, 3-wire (no Ratings: neutral) SE-325 Order Options .. -
Page 20: Ordering Information
Option repair, replace, or refund the original purchase price of an 0 No ammeter NGRM-ENC that is determined by Littelfuse Startco to 1 Earth-leakage panel meter be defective if it is returned to the factory, freight prepaid, 2 Earth-leakage panel meter &... -
Page 21: Appendix A Ngrm-Enc Revision History
Page 17 NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 APPENDIX A NGRM-ENC REVISION HISTORY MANUAL MANUAL PRODUCT REVISION RELEASE DATE REVISION (REVISION NUMBER ON PRODUCT LABEL) March 5, 2015 0-B-030515 April 25, 2014 0-A-042514 ANUAL EVISION ISTORY 0-B-030515 EVISION ECTION Added enclosure ratings. - Page 22 Page 18 NGRM-ENC Enclosed Neutral-Grounding-Resistor Monitor Rev. 0-B-030515 This page intentionally left blank. Arrow.com. Downloaded from...