SE-330AU Series - Resistance Grounding Protection Relays from Protection Relays and Controls

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

Series: SE-330AU Questions? Contact Littelfuse Support

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.

Access specifications, certifications, check availability and order parts below

Catalog #	Supply Voltage (VAC)	Supply Voltage (VDC)	Relay Contacts	Approvals	Analog Output (mA)	Comms	New Revision Availability	Old Revision Availability	IEEE Device Numbers	Relay Contact Operating Mode

SE-330AU-00-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-00-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-01-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, DeviceNet	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-01-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, DeviceNet	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-02-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	RS-232, Profibus	Not available	Available until stock depleted	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-02-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	RS-232, Profibus	Not available	Available until stock depleted	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-03-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-03-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-04-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-04-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-05-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-05-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-06-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-06-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-07-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-07-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-08-00	65-265	85-275	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-08-01	65-265	85-275	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-20-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-20-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-21-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, DeviceNet	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-21-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, DeviceNet	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-22-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	RS-232, Profibus	Not available	Available until stock depleted	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-22-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	RS-232, Profibus	Not available	Available until stock depleted	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-23-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-23-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-24-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-24-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-25-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-25-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, Ethernet (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-26-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-26-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual RJ45)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-27-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-27-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (RJ45 and SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-28-00	28-52	36-72	Two Form A, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe
SE-330AU-28-01	28-52	36-72	One Form A, One Form B, Two Form C	CE, C-Tick	4-20	USB, IEC61850 (Dual SC Fiber)	Now	No longer available	50G 50N 51G 51N 59N 86	Fail-safe

	SE-330 PCN Document Changes to SE-330 Series Neutral-Grounding-Resistor Monitors
	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.
	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.
	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-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
	SE-330 DeviceNet Manual - Previous Revision This document describes the Anybus DeviceNet features supported by the SE-330/SE-330AU/SE-330HV.
	SE-330 EthernetIP Manual - Previous Revision This document describes the Anybus Ethernet IT features supported by the SE-330/SE-330AU/SE-330HV.
	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.
	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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