Reyrolle 7SR224
The Reyrolle 7SR224 series relays include directional control of three-phase overcurrent and earth fault functionality and are typically installed as an integral controller for a pole mounted recloser. The controller offers an integrated auto-reclose solution for use on overhead line (OHL) feeders.
Their functionality allows highly flexible settings for current and time grading, making it compatible with all types of overcurrent protection.
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Basic Features
- Has 4 current and 4 voltage inputs
- Housed in E10 cases
- Provides integrated logic which allows optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits
- Data communication channels allows access to protection, instrumentation, and metering functionalities
- Front USB port for local PC connection and rear electrical RS485 port for remote connection are provided as standard, with additional ports available as options
- 2 levels of password protection
- Circuit breaker trip counter and timer
- Fault, event, and waveform records
- Undercurrent protection (37)
- Broken conductor protection (46BC)
- Thermal overload protection (49)
- Overcurrent protection (50, 51)
- Earth fault protection (50G, 50SEF, 51G, 51SEF)
- Under/over voltage protection (27/59)
- Negative phase sequence voltage protection (47)
- Voltage controlled overcurrent protection (51V)
- Neutral voltage displacement protection (59N)
- Directional control of overcurrent & earth fault protection (67)
- Trip & close circuit supervision (74T/CCS)
- Inrush detector (81HBL2)
- Circuit breaker fail (50BF)
- Auto reclose (79)
- Primary/secondary current phases and earth direction monitoring
- Primary/secondary line and phase voltages monitoring
- Apparent power and power factor monitoring
- Real and reactive power monitoring
- Historical demand record