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Description
The SE-703 is a microprocessor-based earth-fault relay for resistanceand 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 lowlevel protection and system coordinationAdjustable time delay (INST-500 ms)
Adjustable trip delay allows quick protection and system coordinationOutput contacts
2 Form C ground-fault output contacts for operation of separate annunciation and trip circuitsAnalog output (0-5 V)
Allows for connecting an optional meter (PGA-0500) or control systemCT-Loop monitoring
Alarms when CT is not connectedContact operating mode
Fail-safe operating mode for undervoltage applications, optional non-fail-safe mode availableHarmonic filtering
Eliminates nuisance trippingNon-volatile trip memory
Retains trip state while de-energized to simplify troubleshootingMicroprocessor based
No calibration required, saves maintenance costUniversal power supply
Allows operation in application where one side of PT is faulted, provides flexibility for numerous applicationsGlobal certifications
Compliant with US, Canadian, European, and Australian standards for applications in almost any country
SE-703 Datasheet
SE-703 Manual
Specifications
- IEEE Device Numbers: Ground fault (50G/N, 51G/N)
- Input Voltage: See ordering information
- Dimensions: H 75 mm (3.0"); W 55 mm (2.2"); D 115 mm (4.5")
- Trip Level Settings: 25-500 mA
- Trip Time Settings: INST-500 ms
- Contact Operating Mode: Fail-safe (x=0 models) or selectable (x=2 models)
- Harmonic Filtering: Standard feature
- Test Button: Standard feature
- Reset Button: Standard feature
- CT-Loop Monitoring: Standard feature
- Output Contacts: Two isolated Form C contacts
- Approvals: CSA certified, UL Listed (E340889), CE (European Union), RCM (Australian)
- Compliance: AS/NZS 2081:2011 (x=0 models) or AS/NZS 2081: 2002 (x=2 models)
- Analog Output: 0-5 V
- Conformally coated: Yes
- Warranty: 5 years
- Mounting: DIN, Surface (standard) Panel (with PMA-55 or PMA-60 adapter)
Ordering Information
ORDERING NUMBER | CONTROL POWER |
SE-703-0U-0x | 120/240 VAC/VDC |
SE-703-0D-0x | 12/24 VDC |
SE-703-0T-0x | 48 VDC |
SE-703-03-0x | 24 VAC |
ACCESSORIES | REQUIREMENT |
EFCT Series | Required |
PGA-0500 | Optional |
PMA-55 | Optional |
PMA-60 | Optional |
SE-EFVC Voltage Clamp | Optional |
Accessories
EFCT Series Ground-Fault Current Transformer
Required zero-sequence current transformer specifically designed for low-level detection.
PGA-0500 Analog % Current Meter
Optional panel-mounted analog meter displays groundfault current as a percentage of the set-point or 5 A.
PMA-60 Series – Mounting Adapter
Required when panel mounting for AS/NZS 2081:2011 compliance