Cut Sheet

Page ii
SE-330HV Neutral-Grounding-Resistor Monitor Rev. 5-I-091115
TABLE OF CONTENTS
SECTION PAGE
1 General ................................................................. 1
1.1 Modern Resistance-Grounded Systems ................ 1
1.2 SE-330HV NGR Monitoring ................................ 1
2 Operation ............................................................. 3
2.1 Settings .................................................................. 3
2.1.1 GF Trip Time ............................................. 3
2.1.2 GF Trip Level ............................................ 3
2.1.3 V
N
Trip Level ............................................. 3
2.1.4 Configuration Settings ............................... 3
2.1.4.1 Trip-Relay Mode and
Trip-Memory Mode (S2) ........................... 3
2.1.4.2 Ground-Fault-Trip Latch (S3) ....... 3
2.1.4.3 Resistor-Fault-Trip Latch (S4) ...... 3
2.1.4.4 Sensing-Resistor Selection (S5) .... 3
2.1.4.5 Frequency (S6) .............................. 4
2.1.4.6 Upgrade Mode (S8) ....................... 4
2.1.5 Resistor-Fault Trip Time ........................... 4
2.1.6 Resistor-Fault Trip Level ........................... 4
2.1.7 Geo-Magnetic Filter ................................... 4
2.2 Calibration ............................................................. 4
2.3 Trip Indication and Reset ...................................... 4
2.4 Remote Operation ................................................. 4
2.5 Relay K1 LED ....................................................... 5
2.6 Unit Healthy Output .............................................. 5
2.7 Diagnostic LED..................................................... 5
2.8 Analog Output ....................................................... 5
3 Installation ........................................................... 6
3.1 SE-330HV ............................................................. 6
3.2 Sensing Resistor .................................................... 6
3.3 Ground-Fault CT ................................................. 18
3.4 Isolated Ground Connection ............................... 23
4 Data Interfaces .................................................. 24
4.1 SD Card ............................................................... 24
4.1.1 Datalogging .............................................. 24
4.1.2 Firmware Upgrade ................................... 24
4.2 USB Interface ...................................................... 24
4.3 Network Communications .................................. 24
5 Troubleshooting ................................................ 25
6 Technical Specifications.................................... 27
6.1 SE-330HV ........................................................... 27
6.2 Sensing Resistors ................................................ 29
6.3 Current Sensors ................................................... 30
7 Ordering Information ....................................... 31
8 Warranty ........................................................... 32
9 Test Procedures ................................................. 32
9.1 Resistor-Fault Tests ............................................. 32
9.1.1 Calibration and Open Test ....................... 32
9.1.2 Voltage Test ............................................. 32
9.2 Sensing-Resistor Test .......................................... 32
9.3 Analog-Output Test ............................................. 32
9.4 Ground-Fault Performance Test .......................... 33
Appendix A SE-330HV Revision History ................... 34
LIST OF FIGURES
FIGURE PAGE
1 Configuration Switches ............................................ 3
2 Analog-Output Connections ..................................... 5
3 SE-330HV Connection Diagram .............................. 7
4 SE-330HV Outline and Panel-Mounting Details ...... 8
5 SE-330HV Outline and Surface-Mounting Details .. 9
6 SE-IP65CVR-G Weatherproof Cover Outline ....... 10
7 SE-IP65CVR-G Weatherproof Cover Installation . 11
8 ER-15KV Sensing Resistor .................................... 12
9 ER-25KV Sensing Resistor .................................... 13
10 ER-35KV Sensing Resistor .................................... 14
11 ER-72KV Sensing Resistor Outline ....................... 15
12 ER-72KV Sensing Resistor Mounting Details ....... 16
13 ER-1000HV Sensing Resistor ................................ 17
14 ER-1000HV Simplified Connection Diagram ........ 18
15 EFCT-1 Ground-Fault Current Sensor ................... 19
16 SE-CS30-70 Ground-Fault Current Sensor ............ 20
17 EFCT-26 and SE-CS30-26 Ground-Fault
Current Sensors ...................................................... 21
18 RK-332 Remote Indication and Reset .................... 22
19 PGA-0520 Analog Percent Current Meter ............. 22
20 Simplified Isolated-Ground Connection ................. 23
21 Ground-Fault-Test Circuit ...................................... 33
LIST OF TABLES
TABLE PAGE
1 Typical Values for Tripping Systems ....................... 2
2 Ground-Fault Trip Levels for Selected CT’s ............ 2
3 Ground-Fault-Test Record ...................................... 33
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.