ABB REF601 REJ601 REM601 Specialized Feeder Protection Relay
OVERVIEW
The REF601/REJ601 are specialized feeder protection relays for the protection of utility substations and industrial power systems in primary and secondary distribution networks.
Similarly, the REM601 is a specialized motor protection relay for the protection of medium and low voltage asynchronous motors in manufacturing and process industries.
The REF601/REJ601/REM601 is a member of the ABB Relion® product family, belonging to the 605 series.
The relays optimize the combination of protection, monitoring and control functions in a single unit.
It offers best-in-class performance and availability and is based on ABB’s in-depth www.abb-drive.com knowledge of protection and digital technology.
Common features of the REF601/REJ601/REM601 include
Compact and easy to use
Standard 1A or 5A CT input for phase current measurement
Alternate sensor input to support phase current measurements
Measurement of earth current internally or externally via the CBCT
Local and remote control of circuit breakers
Trip circuit monitoring and relay internal monitoring
Lockout function
100 event records with date and time stamps
Five analog fault records
Non-resettable trip counter
Primary on-line current measurement
Comprehensive local HMI
Universal auxiliary power supply
Optional MODBUS RTU or IEC 60870-5-103 communication
Non-volatile memory for setup and fault logging
User-selectable nominal frequency 50 / 60 Hz
Configurable binary input, output, and alarm LED indicators
Local HMI with multi-language support
Two setup groups
Protection features of the REF601/REJ601 include
Three levels of overcurrent protection
Two levels of ground fault protection
Surge detection for stability during transformer charging
Thermal overload protection
Negative sequence overcurrent
Phase discontinuity protection
Circuit breaker fault protection
Multi-shot automatic recloser function for overhead lines
The protection functions of the REM601 include
Three-phase thermal overload protection
Negative phase sequence protection
Phase break or single phase protection and reverse phase protection
Motor start or stall protection and repeat start protection
Short circuit and earth fault protection
Motor load jam or rotor lock protection
Undercurrent protection
Emergency restart function
Circuit breaker fault protection
Relay functions
The REF601/REJ601/REM601 provide pre-configured functions for quick and easy commissioning of switchgear.
To emphasize the ease of use of the relays, only application-specific parameters need to be set within the intended application of the relay.