SE-330AU Series - Neutral-Earthing-Resistor Monitor

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The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-voltage transformers and generators that is compliant with AS/NZS 2081:2011. It measures 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, and also that it has not been bypassed or shorted. An open NER renders current-sensing earth-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NER results in higher-than-expected earth-fault current. A unique LED flashing code provides external confirmation for plant safety teams and inspectors when standards-compliant protection has been configured and is active.

The SE-330AU earth-fault function complies with AS/NZS 2081:2011 Section 6, and the NER integrity monitoring function complies with AS/NZS 2081:2011 Section 8. For non-AS/NZS 2081 applications, see the SE-330 for applications up to 35 kV, or the SE-330HV for applications up to 72 kV.

Complete setup of the SE-330AU requires connection to a PC running SE-MON330 v4.10 or higher.

 

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
(VAC)
Supply
Voltage
(VDC)
Relay
Contacts
ApprovalsAnalog Output (mA)CommsNew Revision AvailabilityOld Revision AvailabilityIEEE Device NumbersRelay
Contact
Operating
Mode
DimensionsCompare
SE-330AU-00-0065-26585-275Two Form A Two Form CCE C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-00-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-01-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-01-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-03-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-03-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-04-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-04-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-05-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-05-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-06-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-06-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-07-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-07-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-08-0065-26585-275Two Form A Two Form CCE C-Tick4-20USB IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-08-0165-26585-275One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-20-0028-5236-72Two Form A Two Form CCE C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-20-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-21-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-21-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-23-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-23-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-24-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-24-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-25-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-25-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-26-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-26-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-27-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-27-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-28-0028-5236-72Two Form A Two Form CCE C-Tick4-20USB IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H X 3.9W X 5.8D
SE-330AU-28-0128-5236-72One Form A One Form B Two Form CCE C-Tick4-20USB IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe8.4H 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 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.

SE 330 AU DeviceNet Electronic Datasheet EDS - New 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 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.

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.

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

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EARTH-FAULT-CT SELECTION FLOWCHART...

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