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SE-330 Neutral-Grounding-Resistor Monitor
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SE-330 Neutral-Grounding-Resistor Monitor
SE-330 Neutral-Grounding-Resistor Monitor
Functions:
  • Detects neutral-grounding-resistor failure - NGR failure will render current-sensing ground-fault protection inoperative
  • Detects ground faults
  • Controls pulsing-ground-fault system
  • Data logging with PC software

Features:
  • Continuously measures NGR resistance
  • Wide set-point ranges - compatible with any neutral-connected NGR up to 35-kV system voltage (for 72-kV system voltage see SE-330HV)
  • Calibrates to NGR resistance
  • 4-20 mA output for earth-leakage metering
  • DFT (harmonic) filter prevents false operation
  • Trip delay to coordinate with downstream ground-fault relays
  • Standard RS-232 interface
  • Optional DeviceNet, PROFIBUS, and Ethernet communications
  • Four output relays for control and indication
  • Pulsing output contact for fault locating
  • Conforms to CSA Standard M421-00 Use of Electricity in Mines
  • Free SE-MON330 PC-interface software
  • Conformally coated circuit boards
  • Five year warranty

Data Sheets:

Manuals:

Typical Applications:
  • Resistance-grounded transformers and generators in processing, manufacturing, chemical, mining, forestry, petroleum, and water treatment facilities
  • Tripping and alarm-only resistance-grounded systems, including overhead line and pulsing-ground-fault applications
  • Compatible with very high and very low resistor values
  • NGR monitoring is recommended for all resistance-grounded systems

Minimum System Components:

IEEE Device Numbers:
3GC, 50G, 50N, 51G, 51N, 59N, 86

Accessories:

RK-332: Remote Indication and Reset Assembly
RK-332
Remote Indication and Reset Assembly
Remote indication and reset for the SE-330, SE-330AU, and SE-330HV. NEMA 4 and NEMA 13 rating. Standard 22-mm mounting.
RK-332: Remote Indication and Reset Assembly
RK-332
Remote Indication and Reset Assembly
Used with: SE-330, SE-330AU, SE-330HV
Data Sheet
SE-IP65CVR-G: Protective Cover
SE-IP65CVR-G
Protective Cover
Allows relays to be used in a wet and dusty environment. Provides IP65 protection for the SE-13X- and SE-330-series relays, as well as the SE-400.
SE-IP65CVR-G: Protective Cover
SE-IP65CVR-G
Protective Cover
Used with: SE-134C, SE-135, SE-330,
SE-330AU, SE-330HV, SE-400

Current Transformers:
CT200: Current Transformer
CT200
Current Transformer
Current transformer used to detect phase or ground-fault current.
CT200: Current Transformer
CT200
Current Transformer
Dimensions: 55-mm (2.2") ID window.
Ratio: 200:5 A
Used with: FPS, FPU-32, IDM-3, MPU-32, MPS,
PGR-8800, SE-105, SE-107, SE-325, SE-330,
SE-330HV, SE-701
CAD Drawing PDF Drawing Tech Notes
EFCT-1: Earth-Fault Current Transformer
EFCT-1
Earth-Fault Current Transformer
Sensitive current transformer used to detect ground-fault current. EFCT-1FC flux conditioner available.
EFCT-1: Earth-Fault Current Transformer
EFCT-1
Earth-Fault Current Transformer
Dimensions: 82-mm (3.23") ID window.
Ratio: 5:0.05 A
Used with: FPS, FPU-32, MPU-32, MPS, SE-330,
SE-330AU, SE-330HV, SE-701, SE-703
CAD Drawing PDF Drawing Tech Notes
SE-CS30-26: Current Sensor
SE-CS30-26
Current Sensor
Current sensor used to detect ground-fault current.
SE-CS30-26: Current Sensor
SE-CS30-26
Current Sensor
Dimensions: 26-mm (1.0") ID window.
Ratio: 30:0.05 A
Used with: FPS, FPU-32, MPS, MPU-32,
PGR-6100, SE-330, SE-330AU, SE-330HV,
SE-525, SE-701, SE-704
CAD Drawing Technical Information Diagram
EFCT-26: Earth-Fault Current Transformer
EFCT-26
Earth-Fault Current Transformer
Sensitive current transformer used to detect ground-fault current. Flux conditioner not required.
EFCT-26: Earth-Fault Current Transformer
EFCT-26
Earth-Fault Current Transformer
Dimensions: 26-mm (1.0") ID window.
Ratio: 5:0.05 A
Used with: FPS, FPU-32, MPU-32, MPS, SE-330,
SE-330AU, SE-330HV, SE-701, SE-703
CAD Drawing PDF Drawing Tech Notes
EFCT-FC: EFCT Flux Conditioner
EFCT-1FC
EFCT Flux Conditioner
Helps prevent saturation when installed in the EFCT-1 window.
EFCT-FC: EFCT Flux Conditioner
EFCT-1FC
EFCT Flux Conditioner
Dimensions: EFCT-1FC has a 70-mm (2.75") ID window.
Used with: EFCT-1
Tech Notes
SE-CS30-70: Current Sensor
SE-CS30-70
Current Sensor
Current sensor used to detect ground-fault current.
SE-CS30-70: Current Sensor
SE-CS30-70
Current Sensor
Dimensions: 70-mm (2.8") ID window.
Ratio: 30:0.05 A
Used with: FPS, FPU-32, MPS, MPU-32,
PGR-6100, SE-330, SE-330AU, SE-330HV,
SE-525, SE-701, SE-704
CAD Drawing Technical Information Diagram (SE-330-M Fig. 12)

Sensing Resistors:
ER-600VC: Sensing Resistor
ER-600VC
1-kV Sensing Resistor
Used with the SE-325, SE-330, and SE-330AU to continuously monitor the continuity of a neutral-grounding resistor on systems up to 1 kVac.
ER-600VC: Sensing Resistor
ER-600VC
1-kV Sensing Resistor
Used with: SE-325, SE-330, SE-330AU
CAD Drawing PDF Drawing
ER-5KV: Sensing Resistor
ER-5KV
5-kV Sensing Resistor
Used with the SE-325, SE-330, and SE-330AU to continuously monitor the continuity of a neutral-grounding resistor on systems up to 5 kVac.
ER-5KV: Sensing Resistor
ER-5KV
5-kV Sensing Resistor
Used with: SE-325, SE-330, SE-330AU
CAD Drawing PDF Drawing
ER-15KV: Sensing Resistor
ER-15KV
15-kV Sensing Resistor
Used with the SE-325, SE-330, SE-330AU, and SE-330HV to continuously monitor the continuity of a neutral-grounding resistor on systems up to 15 kVac.
ER-15KV: Sensing Resistor
ER-15KV
15-kV Sensing Resistor
Used with: SE-325, SE-330, SE-330AU,
SE-330HV
CAD Drawing PDF Drawing
ER-35KV: Sensing Resistor
ER-35KV
35-kV Sensing Resistor
Used with the SE-330, SE-330AU, and SE-330HV to continuously monitor the continuity of a neutral-grounding resistor on systems up to 35 kVac.
ER-35KV: Sensing Resistor
ER-35KV
35-kV Sensing Resistor
Used with: SE-330, SE-330AU, SE-330HV
PDF Drawing
SE-MRE-600: Moisture Resistant Enclosure Kit
SE-MRE-600
Moisture Resistant Enclosure Kit
Moisture-resistant enclosure specifically designed for the ER-600VC and ER-1000HV, which protects the connection terminals from snow and rain in outdoor applications.
SE-MRE-600: Moisture Resistant Enclosure Kit
SE-MRE-600
Moisture Resistant Enclosure Kit
Used with: ER-600VC, ER-1000HV
ER-5WP: Weather-Protected Sensing Resistor
ER-5WP
5-kV Weather-Protected Sensing Resistor
Used with the SE-325, SE-330, and SE-330AU to continuously monitor the continuity of a neutral-grounding resistor on systems up to 5 kVac. Comes with weather-protected terminals for outdoor installations.
ER-5WP: Weather-Protected Sensing Resistor
ER-5WP
5-kV Weather-Protected Sensing Resistor
Used with: SE-325, SE-330, SE-330AU
PDF Drawing
ER-25KV: Sensing Resistor
ER-25KV
25-kV Sensing Resistor
Used with the SE-325, SE-330, SE-330AU, and SE-330HV to continuously monitor the continuity of a neutral-grounding resistor on systems up to 25 kVac.
ER-25KV: Sensing Resistor
ER-25KV
25-kV Sensing Resistor
Used with: SE-325, SE-330, SE-330AU,
SE-330HV
CAD Drawing PDF Drawing
Ph: (306) 373-5505
Fax: (306) 374-2245
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Last Updated January 5, 2012