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 A One Form B Two Form C, Two Form A Two Form C

  • 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 A One Form B Two Form C, Two Form A Two Form C

  • 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 A One Form B Two Form C, Two Form A Two Form C

  • 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 v4.0 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 SE-330 Firmware Update Instructions

pdf icon Monitoring Neutral Grounding Resistors

Resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems.

SE-330, SE-330AU, SE-330HV 3D Model

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 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