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 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.

The relays provide protection, control, measurement and condition monitoring functions. The following table lists the functions supported by the IED: