SE-330AU-21-01 - SE-330AU Series

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. It provides continuous monitoring of the neutral-to-earth path to verify that the neutral-earthing resistor (NER) is intact. This is of utmost importance—an open NER renders current-sensing earth-fault protection inoperative and could result in a false belief that the system is functioning properly. The SE-330AU earth-fault function complies with AS/NZS 2081.3:2002. Outputs include four relay outputs, an analog output, and an RS-232 interface. Network communications options are available. For non-AS/NZS 2081 applications, see the SE-330 or SE-330HV.
Property (Mouseover for details) Value
Analog Output Current (mA) 4-20
Approvals CE, C-Tick
Comms USB, DeviceNet
Relay Contacts One Form A, One Form B, Two Form C
Supply Voltage (VAC) 28-52
Supply Voltage (VDC) 36-72
New Revision Availability Now
Old Revision Availability No longer available
IEEE Device Numbers 50G
50N
51G
51N
59N
86
Relay Contact Operating Mode Fail-safe
Dimensions 8.4H X 3.9W X 5.8D

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

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

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

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 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 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.

SE-MON330 v3.7 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.

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.

ER-15Kv 3D Model

ER-25kv CAD Drawing

ER-600VC CAD Drawing

pdf icon Littelfuse Protection Relays Monitoring NGRs TN

Monitoring Neutral-Grounding Resistors—An Update...

pdf icon TN-RG01 NGR Monitoring Isolated Ground Beds

pdf icon TN-RG05 SE-330 Guideform Specification

pdf icon TN-RG07 SE-VS50010K Voltage Scaler

pdf icon TN-RG08 SE-330 Settings

pdf icon TN-RG09 Single NGR for Multiple Sources

pdf icon TN-RG11 Voltage Metering on RG Systems

pdf icon TN-RG12 Convert Ungrounded to Resistance Grounded

pdf icon TN-RG14 NGR Package Checklist

pdf icon TN-GF10_Pulsing-Ground-Fault-Systems