ABB RER103 Bus Connection Module

The high speed fault detection from both line ends together with scheme communication enables fast fault clearance.

REL670 now includes increased number of functional instances whereby protection of two 

overhead lines (one as main and another as backup) can be achieved using a single IED.

RET670 now includes a state-of-the art differential protection for phase-shifting transformers.

In terms of solution, the complex phase-shifting transformer is seen as a single unit and only external CTs and VTs will be required. 

The differential protection is self-adaptive to the phase angle and voltage ratio thereby making it extremely simple to configure, set and deploy.

The single phase and three phase circuit breaker failure protection are now updated with a flexibility of having several different initiation conditions.

REC670 now includes 12 instances (from earlier 6 instances) of high-impedance differential protection functions. 

This increase will now allow coverage of applications with a higher number of zones using one single IED.

All 670 series products now include current/voltage/general delta supervision functionality. 

These can be used for delta calculation including vector shift calculation using instantaneous/RMS

magnitudes for usage in applications like comparators or release conditions.

All 670 series products now include current/voltage harmonic monitoring functionality. 

These functions are useful to monitor the harmonic distortion, up to 5th harmonic, total harmonic distortion and total demand distortion.

Customer benefits and savings 

• Risk Mitigation: Transfer of risk from client to ABB for coordinating design interface of all elements in the package to form a single product solution. 

• Reduced Client Resources: ABB being responsible for the scope of works described above reduces client manpower to engineer and manage the project. 

• Predictable Delivery & Cost Schedule: As a majority of the work is performed off site, 

the client is insulated from local labor shortages, environmental & industrial relations factors, granting fewer and shorter isolation possessions. 

• Reduced Site Resources: Comprehensive FAT can be performed before delivery reducing site commissioning requirements.

The data communication properties include the following communication standards: SPA bus, LON bus, IEC 60870-5-103.

IEC 61850 via SPA-ZC 400. Profibus DPV1 via SPA-ZC 302. 

DNP 3.0 and Modbus communication with higher level equipment. 

Further, the LON communication together with the PLC functions minimizes the need for hardwiring between the feeder terminals.

ABB’s comprehensive service offering ensures life cycle support for medium voltage products 

ranging from installation and commissioning, through condition monitoring and plant maintanace programs, 

to decommissioning and recycling. 

Our global network of service centers and experts help customers to optimize the performance of 

their equipment without compromizing on reliablity and safetyDescription.