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. 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. For non-AS/NZS 2081 applications, see the SE-330 or SE-330HV.

The SE-330AU 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
  • Earth-fault trip level is adjustable from 0.125 to 5A (EFCT) or 0.75 to 30A (CS30). When set to MEM, the earth-fault trip level is adjustable from 2 to 100% in 1% increments of the CT-primary rating. SE-MON330 V3.2 or later is required.
  • 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-330AU to the network using a standard Ethernet patch cable. Use of a crossover cable to connect the SE-330AU 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-330AU does not support the use of DHCP. If the SE-330AU is being set-up for first time, it is recommended to only have one SE-330AU 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 earth-fault-detection failure

Earth-fault detection

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

Main or backup protection to detect an earth fault anywhere on the monitored system

Adjustable pickup

Select greatest sensitivity without false operation

Adjustable time delay (0.1 - 0.5s)

Adjustable trip delay allows quick protection and system coordination

Output contacts

Two Form C (Earth 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

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

Calibrate push button

Ensures resistor-failure sensitivity is correct

Unit-healthy output

Verifies SE-330AU 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-330AU-00-0065-26585-275Two Form A, Two Form CCE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
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-safe
SE-330AU-01-0065-26585-275Two Form A, Two Form CCE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
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-safe
SE-330AU-02-0065-26585-275Two Form A, Two Form CCE, C-Tick4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
SE-330AU-02-0165-26585-275One Form A, One Form B, Two Form CCE, C-Tick4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
SE-330AU-20-0028-5236-72Two Form A, Two Form CCE, C-Tick4-20USBNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
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-safe
SE-330AU-21-0028-5236-72Two Form A, Two Form CCE, C-Tick4-20USB, DeviceNetNowNo longer available50G
50N
51G
51N
59N
86
Fail-safe
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-safe
SE-330AU-22-0028-5236-72Two Form A, Two Form CCE, C-Tick4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
SE-330AU-22-0128-5236-72One Form A, One Form B, Two Form CCE, C-Tick4-20RS-232, ProfibusNot availableAvailable until stock depleted50G
50N
51G
51N
59N
86
Fail-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe
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-safe

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.

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