Link has been copied to clipboard
The SE-703 series is a microprocessor-based, earth-fault relay for solidly grounded and resistance-grounded ac 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 (Australian/New Zealand) 2081 compliant to either 2011 or 2002 models (see ordering options).
sp- Adjustable pickup (25–500 mA)
- Adjustable time delay (INST–500 ms)
- Output contacts
- Analog outputs (0–5 V)
- CT-loop monitoring
- Non-volatile trip memory
- Contact operating mode
- Harmonic filtering
- Universal power supply
- Microprocessor-based
- Adjustable trip setting provides a wide range of low-level protection and system coordination
- Adjustable trip delay allows quick protection and system coordination
- Two Form C ground-fault output contacts for operation of separate annunciation and trip circuits
- Allows for connecting an optional meter (PGA-0500) or a control system
- Alarms when CT is not connected
- Retains trip state when de-energized to simplify troubleshooting
- Fail-safe operating mode for undervoltage applications, optional non-fail-safe mode available
- Eliminates nuisance tripping
- Allows operation in application where one side of PT is faulted, provides flexibility for numerous applications
- No calibration required-saves on maintenance cost
SE-703 Parts
Link has been copied to clipboard
Filters
SE-703 Applications
- Solidly grounded and resistance-grounded ac systems
