SE-330 Series - Neutral-Grounding-Resistor Monitor

Littelfuse SE-330 New Revision
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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. It provides continuous monitoring of the neutral-to-ground path to verify that the neutral-grounding resistor (NGR) is intact. This is of utmost importance—an open NGR renders current-sensing ground-fault protection inoperative and could result in a false belief that the system is functioning properly. 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 high-voltage applications, use the SE-330HV. For applications that require conformance to Australian standard AS/NZS 2081.3:2002, see the SE-330AU.

The SE-330 New Revision provides these additional features:

  • 100 trip records with date and time stamp
  • A mini-USB interface to view measured values, configure settings and check event records using SE-MON330 v3.2 or later
  • An on-board microSD card (included) can be used for long term data logging and firmware upgrades
  • Ground-fault trip level is adjustable from 2 to 100% in 10 discrete settings, and in 1% increments when using the MEM setting and SE-MON330 v3.2 or later
  • Dual Ethernet ports are optionally available with support for fiber and RJ45 interfaces
  • IEC 61850 protocol is optionally available
COMPUTER TO RELAY CONNECTION

Connect the SE-330 to the network using a standard Ethernet patch cable. Use of a crossover cable to connect the SE-330 directly to the computer running IP-Config is not recommended. A typical router will assign an IP address to all connected computers that are using DHCP. The SE-330 does not support the use of DHCP. If the SE-330 is being set-up for first time, it is recommended to only have one SE-330 connected to the network to prevent communication errors.

Click here to download the COMPUTER TO RELAY CONNECTION diagram.

FEATURES

IEEE #

BENEFITS

Continuous NGR monitoring

3

Detects resistor failure within seconds, reduces transient-overvoltage risk, removes risk of ground-fault-detection failure

Ground-fault detection

50G/N, 51G/N,
59N

Main or backup protection to detect a ground fault anywhere on the monitored system

Adjustable pickup (2-100%)

Select greatest sensitivity without false operation

Adjustable time delay (0.1 - 10 s)

Adjustable trip delay allows quick protection and system coordination

Universal CT compatibility

Allows the use of a CT that gives required ground-fault settings

Output contacts

Two Form C (Ground Fault and Resistor Fault), Two Form A (Trip/Pulse, Healthy)

Analog output (4 - 20 mA)

Allows for connecting an optional PGA-0520 meter or control system

Pulsing output

Control the operation of a pulsing ground-fault-location circuit

Data logging

On-board 100-event recorder with date and time stamp helps with system diagnostics

Harmonic filtering (DFT)

Eliminate false trips due to harmonic noise from ASDs

Local communications

Mini-USB port to view measured values, log to a PC and check event records

Network communications

Remotely view measured values and event records, reset trips, and cause a remote trip

Software

PC-interface software (SE-MON330) is available

Selectable contact
operating mode

Selectable fail-safe or non-fail-safe operating modes allows connection to shunt or undervoltage breaker coil
or alarm circuit

Selectable reset mode

Selectable latching or auto-reset operation

Calibrate push button

Ensures resistor-failure sensitivity is correct

Unit-healthy output

Verifies SE-330 is operating correctly

Conformal coating

Internal circuits are conformally coated to protect against corrosion and moisture

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
Compare
SE-330-00-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-00-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-01-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-01-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-02-0065-26585-275Two Form A, Two Form CCSA, UL4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-02-0165-26585-275One Form A, One Form B, Two Form CCSA, UL4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-03-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-03-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-04-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-04-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-05-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-05-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-06-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-06-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-07-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-07-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-08-0065-26585-275Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-08-0165-26585-275One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-20-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-20-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-21-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-21-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-22-0028-5236-72Two Form A, Two Form CCSA, UL4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-22-0128-5236-72One Form A, One Form B, Two Form CCSA, UL4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-23-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
87
Fail-safe
Non Fail-safe
SE-330-23-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-24-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-24-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-25-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-25-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, Ethernet (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-26-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-26-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual RJ45)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-27-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-27-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (RJ45 and SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-28-0028-5236-72Two Form A, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe
SE-330-28-0128-5236-72One Form A, One Form B, Two Form CCSA, UL, CE, C-Tick4-20USB, IEC61850 (Dual SC Fiber)NowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
Non Fail-safe

pdf icon SE-330 PCN Document

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

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 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.

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 Spanish Manual - Previous Revision

Un sistema con conexión a tierra de alta resistencia usa un a resistencia de puesta a tierra del neutro ( RPT o NGR) con una baja corriente admisible para limitar la corriente de f alla de conexión a tierra.

pdf icon SE-330 Portuguese Manual - Previous Revision

Um sistema de aterramento de alta resistência usa um resistor de aterramento de neutro (NGR Neutral-Grounding Resistor) com uma baixa corrente de passagem para limitar a corrente de falha de aterramento. Is

pdf icon SE-330 Chinese Manual

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 DeviceNet Spanish Manual

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 Profibus Spanish Manual

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 v3.7 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.

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 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

pdf icon Littelfuse Protection Relays Monitoring NGRs TN

Monitoring Neutral-Grounding Resistors—An Update...

pdf icon SE-330 Firmware Update Instructions


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