Circuit Protection Review for acb - mccb - mcb - rcd - relay device latest news

New ANSI/IEC Products and Features in ABB Protection and Control Devices

relion650ABB has released several new products in the Relion® 650 series. Three completely new products have been introduced for both ANSI and IEC markets. Additionally, the earlier released products for protection of lines and transformers as well as bay control are now also available according to the ANSI standard.

650 series – ease of use from ready-to-use solutions
The 650 series IEDs provide optimum ‘off the-shelf’, ready-to-use solutions equipped and configured with complete protection functionality and default parameters to meet the needs of a wide range of applications within generation, transmission and sub-transmission.

The 650 series contains the following products according to both IEC and ANSI standards:

-    Line distance protection REL650
-    Transformer protection RET650
-    Bay control REC650
-    Generator protection REG650
-    Breaker protection REQ650
-    High impedance differential protection REB650

All products in 650 series feature several communication protocols for substation automation system (SAS). In addition to IEC 61850-8-1 and DNP 3.0 protocols the products now have been further enhanced by adding IEC 60870-5-103 communication. This enables easy integration of the 650 series products in existing installations together with existing secondary system at extension or refurbishment of the protection and control system.

The three new products in brief

Generator protection REG650 - for small and medium-sized generators
REG650 offers optimum ‘off-the-shelf’, ready-made solutions including all the required functionality for protecting small and medium-sized generators. With its 20 analog inputs, REG650 is one of the most compact generator protection devices on the market. This allows, for instance, the integration of overcurrent protection for excitation or auxiliary transformer, in addition to generator protection.

The 3rd harmonic-based 100% stator earth-fault protection utilizes the differential principle, which provides high sensitivity and security. This ensures correct operation even during low load conditions.

Breaker protection REQ650 - longer life and cost efficiency for your installations
Breaker protection REQ650 provides a standalone solution for applications where the integration of the breaker failure protection or automatic reclosing function into the main line protection IED (Intelligent Electronic Device) is not preferred or suitable.

This IED also offers local back-up protection, synchronizing, synchrocheck and energizing check functionality to enable well-structured and reliable protection for various applications.

High impedance differential protection REB650 - one IED for a wide range of high impedance based applications
ABB introduces a new, unique and compact solution for high impedance differential protection. The numerical busbar protection REB650 IED provides its users with a wide variety of application opportunities.

Designed primarily for the protection of single busbars with or without sectionalizers in high impedance based applications, it also offers high impedance differential protection for generators, autotransformers, shunt reactors and capacitor banks. Its I/O capability allows you to protect up to three 3-phase high impedance differential protection zones with a single IED.

Relion® – Complete confidence
650 series belongs to ABB's 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, the Relion products have been designed to implement the core values of the IEC 61850 standard. With ABB’s leadingedge technology, global application knowledge and experienced support network, you can be completely confident that your system performs reliably – in any situation.

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