Resistance Grounding


  • SE-330

  • The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compl...More

  • Supply
    Voltage
    (VAC):
     28-52, 65-265

  • Supply
    Voltage
    (VDC):
     36-72, 85-275

  • Relay
    Contacts:
     One Form B, Two Form C, One Form A, Two Form A

  • Find Littelfuse SE-330HV Products

    SE-330AU

  • The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-v...More

  • Supply
    Voltage
    (VAC):
     28-52, 65-265

  • Supply
    Voltage
    (VDC):
     36-72, 85-275

  • Relay
    Contacts:
     One Form B, Two Form C, One Form A, Two Form A

  • SE-330HV

  • The SE-330 is an advanced ground-fault and neutral-grounding-resistor monitoring relay. It measures ...More

  • Supply
    Voltage
    (VAC):
     28-52, 65-265

  • Supply
    Voltage
    (VDC):
     36-72, 85-275

  • Relay
    Contacts:
     One Form B, Two Form C, One Form A, Two Form A

  • SE-325

  • The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to ...More

  • Supply
    Voltage
    (VAC):
     120, 240

  • Supply
    Voltage
    (VDC):
     120

  • Relay
    Contacts:
     One Form A (N.O.)

  • NGR

  • Neutral-Grounding Resistors (NGRs) are used to ground power systems by inserting a resistor between ...More

  • Supply
    Voltage
    (VAC):
     Consult Factory

  • Supply
    Voltage
    (VDC):
     Consult Factory

  • Approvals: Consult Factory

  • PGR-5330

  • The PGR-5330 is an advanced ground-fault and resistor monitoring relay. The PGR-5330 measures neutra...More

  • Supply
    Voltage
    (VAC):
     65 - 265

  • Supply
    Voltage
    (VDC):
     32 - 70, 80 - 265

  • Relay
    Contacts:
     Two Form A (N.O.); Two Form C (N.O./N.C.)

pdf icon SE-330 Datasheet - New Revision

The SE-330 is an advanced ground-fault and neutral-grounding- resistor monitoring relay. It measures neutral current, neutral-to- ground voltage, and neutral-to-ground resistance.

pdf icon SE-330 Manual - New Revision

A high-resistance-grounded system uses a neutralgrounding resistor (NGR) with a low let-through current to limit ground-fault current. This is an improvement over low-resistance- or solidly grounded systems because, in those systems, a ground-fault flash hazard exists and a ground fault can result in substantial point-of-fault damage.

pdf icon SE-330 Manual - Previous Revision

A high-resistance-grounded system uses a neutral- grounding resistor (NGR) with a low let-through current to limit ground-fault current.

pdf icon SE-330 Datasheet - Previous Revision

The SE-330 is an advanced ground-fault and neutral-grounding- resistor monitoring relay. It measures neutral current, neutral-to- ground voltage, and neutral-to-ground resistance.

SE-330 One Access Point

SE-330 Two Access Points

SE-330 EthernetIP Electronic Data Sheet (.eds) - New Revision

SE-330 EthernetIP Electronic Data Sheet (.eds) - Previous Revision

SE-330 DeviceNet Electronic Data Sheet (.eds) New Version

SE-330 DeviceNet Electronic Data Sheet (.eds) - Previous Revision

pdf icon SE-330 DeviceNet Manual - New Revision

This document describes the DeviceNet features supported by the new revision SE-330, SE-330AU, and SE-330HV.

pdf icon SE-330 DeviceNet Manual - Previous Revision

This document describes the Anybus DeviceNet features supported by the SE-330/SE-330AU/SE-330HV.

pdf icon SE-330 Profibus Manual - Previous Revision

The Profibus-DP slave interface on the SE-330/ SE-330AU/SE330HV is used to access meter data and provide reset functions. Set points can be read but not written.

pdf icon SE-330 EthernetIP Manual - New Revision

This document describes the EtherNet/IP features supported by the new revision SE-330, SE-330AU, and SE-330HV.

pdf icon SE-330 EthernetIP Manual - Previous Revision

This document describes the Anybus Ethernet IT features supported by the SE-330/SE-330AU/SE-330HV.

pdf icon SE-330 MODBUS TCP Manual - New Revision

This document describes the Modbus/TCP features supported by the new revision SE-330, SE-330AU(1), and SE-330HV.

pdf icon SE-330 IEC 61850 Interface Manual - New Revision

This manual describes the features of the SE-330, SE-330AU, and SE-330HV IEC 61850 interface.

pdf icon SE-330 IEC 61850 Communication Conformance Statement

The purpose of this document is to declare the conformance of the SE-330 IEC 61850 server to the IEC 61850 standard.

SE-MON330 v3.8 Software

This software is used to receive data from SE-330, SE-330AU, and SE-330HV Neutral-Grounding-Resistor Monitors. It will display the relay's set points as well as measured values.

ER-15Kv 3D Model

SE-330 Surface Mount Adapter CAD Drawing

SE-330 CAD Drawing Previous Revision

SE-330 CAD Drawing New Revision

ER-25kv CAD Drawing

ER-600VC CAD Drawing

pdf icon Littelfuse Protection Relays Monitoring NGRs TN

Monitoring Neutral-Grounding Resistors—An Update...

pdf icon SE-330 Firmware Update Instructions

pdf icon SE-330 PCN Document

Changes to SE-330 Series Neutral-Grounding-Resistor Monitors

pdf icon SE-330AU Datasheet - New Revision

The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-voltage transformers and generators. It monitors neutral current, neutral-to-earth voltage, and neutral-to-earth resistance.

pdf icon SE-330AU Datasheet - Previous Revision

The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-voltage transformers and generators. It monitors neutral current, neutral-to-earth voltage, and neutral-to-earth resistance.

pdf icon SE-330AU Manual - New Revision

The SE-330AU is a microprocessor-based neutral- earthing-resistor monitor that detects NER failures and earth faults in resistance-earthed systems.

pdf icon SE-330AU Manual - Previous Revision

The SE-330AU is a microprocessor-based neutral- earthing-resistor monitor that detects NER failures and earth faults in resistance-earthed systems.

SE 330 AU DeviceNet Electronic Datasheet EDS - New Revision

SE-330 AU DeviceNet Electronic Datasheet EDS - Previous Revision

pdf icon SE-MON330 Software Manual

SE-MON330 is a PC-based application designed to access set-points, measured values, and trip records from the SE-330 Neutral-Grounding-Resistor Monitor, the SE-330HV Neutral-Grounding-Resistor Monitor, and the SE-330AU Neutral-Earthing- Resistor Monitor.

pdf icon SE-330HV Manual - New Revision

A high-resistance-grounded system uses a neutral grounding resistor (NGR) with a low let-through current to limit ground-fault current.

pdf icon SE-330HV Manual - Previous Revision