SE-330 Series - Neutral-Grounding-Resistor Monitor

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The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compliant with Rule 10-302 of the 2018 Canadian Electrical Code Part I (CE Code). It measures neutral current, neutral-to-ground voltage, and neutral-to-ground resistance. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact and that it has not been bypassed or shorted. An open NGR renders current sensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. A shorted NGR results in higher-than-expected ground-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-330 can be used with low- and medium-voltage transformers and generators with low- or high-resistance grounding used in processing, manufacturing, chemical, pulp and paper, petroleum, and water-treatment facilities. For applications above 35 kV, use the SE-330HV. For applications that require conformance to Australian/New Zealand standard AS/NZS 2081, use the SE-330AU.

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

For applications where existing switchgear is inaccessible or where a separate control panel is desirable, the SE-330 is also available within a NEMA 4X enclosure. The NGRM-ENC Series is available various options, including a surface-mounted or door-mounted SE-330, to fit the specific customer application.

Access specifications, certifications, check availability and order parts below

Catalog #Supply
Voltage
VAC
Supply
Voltage
VDC
Relay Contacts ConfigAnalog Output Current mACommunicationsNew Rev AvailOld Rev AvailIEEE Device NumbersRelay
Contact
Operating
DimensionsWeight (lbs/g)Auto Manual ResetConformally coatedFrequencyGF Trip Level Range pctSamplesCompare
SE-330-00-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USBNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-00-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USBNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-01-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; DeviceNetNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-01-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; DeviceNetNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-03-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; Ethernet (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-03-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; Ethernet (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-04-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; Ethernet (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-04-01USB Ethernet (RJ45 and SC Fiber)8.4H X 3.9W X 5.8D50
60
ASD
Order
SE-330-05-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; Ethernet (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-05-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; Ethernet (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-06-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; IEC61850 (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-06-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-07-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; IEC61850 (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-07-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-08-0065 - 26585 - 2752 Form A; 2 Form C4 - 20USB; IEC61850 (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-08-0165 - 26585 - 2751 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-20-0028 - 5236 - 722 Form A; 2 Form C4 - 20USBNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-20-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USBNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-21-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; DeviceNetNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-21-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; DeviceNetNowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-23-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; Ethernet (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 87Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD3 - 100% of CT-Primary Rating
SE-330-23-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; Ethernet (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-24-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; Ethernet (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-24-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; Ethernet (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-25-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; Ethernet (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-25-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; Ethernet (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-26-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; IEC61850 (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-26-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (Dual RJ45)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-27-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; IEC61850 (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-27-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (RJ45 and SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-28-0028 - 5236 - 722 Form A; 2 Form C4 - 20USB; IEC61850 (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating
SE-330-28-0128 - 5236 - 721 Form A; 1 Form B; 2 Form C4 - 20USB; IEC61850 (Dual SC Fiber)NowNo longer available50G - 50N - 51G - 51N - 59N - 86Fail-safe / Non Fail-safe8.4 H x 3.9 W x 5.8 D in.0 KgLatching; AutoresetStandard50; 60; ASD2 - 100% of CT-Primary Rating

pdf icon SE-330, SE-330HV, SE-330AU Manual

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.

SE-330 One Access Point

SE-330 Two Access Points

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

dwg SE-330 Surface Mount Adapter CAD Drawing

dwg SE-330 CAD Drawing Previous Revision

dwg SE-330 CAD Drawing New Revision

dwg ER-25kv CAD Drawing

dwg ER-600VC CAD Drawing

pdf icon TN RG-01 NGR Monitoring Isolated Ground Beds

pdf icon TN RG-05 SE-330 Guideform Specification

pdf icon TN RG-07 SE-VS50010K Voltage Scaler

pdf icon TN RG-08 SE-330 Settings

pdf icon TN RG-09 Single NGR for Multiple Sources

pdf icon TN-RG11 Voltage Metering on RG Systems

pdf icon TN RG-12 Convert Ungrounded to Resistance Grounded

pdf icon TN RG-14 NGR Package Checklist

pdf icon TN GF-10 Pulsing Ground-Fault Systems

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 Protection Relays and Controls Catalog - Mandarin

pdf icon SE 330 Datasheet-NEW-REV


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