The SE-703 is a microprocessor-based earth-fault relay for resistance and solidly earthed systems. It offers sensitive earth-fault detection as low as 25 mA and can be used on systems with significant harmonic content. The SE-703 provides feeder-level protection or individual-load protection. The output contacts can be connected for use in protective tripping circuits or in alarm indication circuits. The analog output can be used with a PLC or a meter. The SE-703 is specifically designed to be AS/NZS 2081 compliant to either 2011 or 2002 (see ordering options).

Features & Benefits:

 

• Adjustable pickup (25-500 mA): Adjustable trip setting provides a wide range of low-level protection and system coordination
• Adjustable time delay (INST- 500 ms): Adjustable trip delay allows quick protection and system coordination
• Output contacts: 2 Form C ground-fault output contacts for operation of separate annunciation and trip circuits
• Analog output (0-5 V): Allows for connecting an optional meter (PGA-0500) or control system
• CT-Loop monitoring: Alarms when CT is not connected
• Contact operating mode: Fail-safe operating mode for undervoltage applications, optional non-fail-safe mode available
• Harmonic filtering: Eliminates nuisance tripping
• Non-volatile trip memory: Retains trip state while de-energized to simplify troubleshooting
• Microprocessor based: No calibration required, saves maintenance cost
• Universal power supply: Allows operation in application where one side of PT is faulted, provides flexibility for numerous applications
• Global certifications: Compliant with US, Canadian, European, and Australian standards for applications in almost any country

Documents and Downloads

Document	File Type	File Size	Download
SE-703 SERIES Datesheet	PDF	347 KB