We are happy to introduce the next step for the 605 series relays, REF601, REJ601, REM601 Version 2.5 – the latest addition to the Relion® family of relays. With more than 200 thousand relays installed worldwide, the 601 relays have been the choice of customer for the basic range of protection and control applications.

The relays are suitable for both primary and secondary distribution applications in utility and industries supporting IEC, ANSI and CN standards and conventions for a global reach. The relays have support for both conventional current transformers and Rogowski coil sensors. 

Product range

Feeder protection and control, REF601
Feeder protection, REJ601
Motor protection and control, REM601
Motor protection, REM601

What’s new? 

Easy access to relay for relay parameterization and fault data upload

• Front C type USB communication port for relay configuration and fault data upload through PCM600 software
• Powering up relay with USB port

Reduced number of variant and easy to stock the relay

• Site selectable 1A and 5A current transformer secondary from HMI or through PCM600
• Site selectable MODBUS RTU and IEC 60870-5-103 communication

Easy and quick analyzation of fault data

• Disturbance recording feature
• Increased number of sequence of events
• Increased number of fault data

More user-friendly access to relay

• Larger 128 x 64, 5 line LCD display
• Multiple language support
• Visualization of 3 phase and earth current in one screen

Protection functionality-related improvements 

• Addition of cold load pick up function, instantaneous earth fault stage
• Improved sensitivity of low-set overcurrent protection up to 5% x In
• Improvement in thermal overload protection

Other functionality-related improvements

• Demand values for measurement with selectable time interval
• Basic breaker condition monitoring function
• Support for basic logical gate and timers

Compliance to latest standard for sensors

• Compliance to the latest standards IEC 61869
• Support for higher current ranges for new ABB KECA current sensors

Compliance to latest cyber security requirements

• Audit trail events for secure device management and easy firmware upgrade
• User account management
  

Customer benefits

• Optimized composition of protection, monitoring and control functionality.
• Compact dimensions make relay suitable for mounting in primary and secondary switchgear
• Wide range auxiliary supply
• Site selectable current transformer inputs as 1A and 5A
• Global coverage with IEC, ANSI, CN standards and multiple language support
• Option for conventional current transformers or Rogowski sensor inputs for phase current measurement
• Less number of variants, easy to stock at customer end.
  
   

Product features

• Support for Feeder and Motor current base protection functions
• Support for 50 and 60 Hz frequency
• Configurable binary inputs and outputs either from front HMI or through PCM600
• Support for 250 nos. events, 100 nos. audit trail events and 20 nos. analog fault data
• Press fit mechanism for mounting relay and withdrawable terminals with CT shorting arrangement for quick installation, maintenance and testing
• Online measurements including demand measurement, monitoring functionality like trip circuit supervision, breaker condition monitoring

Target markets

REF601, REJ601 and REM601 is targeted at the global market for medium-voltage and low-voltage protection and control applications (IEC, ANSI and CN).

Customer segments

Utilities

• Primary distribution
• Secondary distribution
• Renewable segment (solar and wind power generation)

Industry

Supported languages

REF601, REJ601 and REM601 relay LHMI is available in English, Chinese, German, French, Italian, Spanish, Portuguese and Turkish and US English languages.