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Relion® 670/650/500 series IEDs belong to the Relion protection and control product family. This family offers the widest range of products for the protection, control, measurement, and supervision of power systems. To ensure interoperable and future-proof solutions, Relion products have been designed to implement the core values of the IEC 61850 standard.

With Hitachi Energy's leading-edge technology, global application knowledge, and experienced support network, you can be completely confident that your system performs reliably – in any situation.

Your benefits include:

  • Utilizing IEC 61850 Edition 2
  • Enables a safe, reliable and profitable grid
  • Robust security management
  • Ease-of-use built-in HMI
  • Enabling the digital substation

Why trust Hitachi Energy to manage your protection and control?


Our offering

Application   670 650 500 6000 series SAM600
Bay control   REC670 REC650      
Busbar protection Distributed     REB500    
Busbar protection High impedance
Busbar protection Centralized REB670        
Circuit breaker protection     REQ650      
Capacitor bank protection   REC670        
Capacitor bank protection   RET670        
Disturbance recording         DRL6600U  
Generator protection   REG670 REG650      
Merging units and field I/O           SAM600
Overhead line/cable protection Line differential protection RED670 RED650   PSL 6603U  
Overhead line/cable protection Line distance protection REL670 REL650   PSL 6602U  
Railway application   RER670        
Reactor protection   REG670        
Reactor protection   RET670        
Tap changer control   REC670        
Tap changer control   RET670 RET650      
Transformer protection   RET670 RET650      
Wide area monitoring   RES670        

Contact us

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