Features

RET670 – optimized for transmission applications
RET670 IEDs provide customized or pre-configured protection solutions for any type of transformer and shunt reactor application. The customized RET670 gives you the freedom to select functionality entirely according to your needs. The pre-configured RET670 variants simplify handling since the basic functionality is included and pre-configured. If needed, you can add optional functions to increase the functionality of the pre-configured RET670 IEDs to meet the specific requirements of your transformer or shunt reactor.

You can also protect and control several objects with a single RET670 IED. For instance, a single RET670 IED can integrate complete protection and control functionality for a transformer and a connected transmission line. The distance protection function can also be used as back-up protection for faults within the transformer. This solution provides efficient protection and control in FACTS installations. The distance protection function can also be used as back-up protection for faults in the connected lines. In all, RET 670 increases both the reliability and profitability of your entire power system.

The extremely fast differential protection function with automatic CT ratio matching and vector group compensation, makes RET670 the ideal solution for the most demanding applications. Furthermore, one RET670 IED can be extended to contain two differential protection functions to protect the most advanced system configurations. This transformer protection IED is designed to operate correctly over a wide frequency range in order to accommodate power system frequency variations during disturbances and generator start-up and shut-down. It has very low requirements on the main CTs, and no interposing CTs are required.

RET670 features also several functions for local and remote apparatus control on all sides of the transformer. Secure bay and station wide interlocking allows you to avoid dangerous or damaging switchgear operations and to ensure personnel safety.

The RET670 IEDs feature a large HMI for local control and instantly accessing important data, such as settings, events and disturbance information. You can control and visualize locally up to 30 primary apparatuses. The large HMI provides you a quick overview of the status of the substation with position indications and service values.

• One RET670 IED fits all power system elements that require unit protection
• RET670 increases productivity and quality from design to operation and maintenance of your installation
• RET670 is optimized for each application with maximum reliability and a short operate time
• Integration of protection and control functionality in one IED enables cost efficient solutions
• Local HMI provides full status information at any time during operation
• Future proof concept that helps you to be competitive today and in the future

Relion® – Complete confidence
Transformer protection RET670/650 IEDs belong to the Relion® protection and control product family. The Relion product 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 ABB’s leading-edge technology, global application knowledge and experienced support network, you can be completely confident that your system performs reliably – in any situation.