Recommended offering for medium-voltage switchgear Protection and control

ABB’s power protection philosophy Relion® protection and control relays Feeder protection Transformer protection Motor protection Generator protection Voltage protection Capacitor bank protection Busbar protection Centralized protection and control Selection table Fleet management Automatic transfer systems

— ABB’s power protection philosophy ABB has delivered protection relays and solutions to more than 100 countries and fully understands the need for diverse protection philosophies that meet local legislation, safety requirements and engineering practice. Therefore, ABB has developed a power protection philosophy that not only serves the specific needs and requirements of diverse power systems, but also creates confidence and peace of mind for both the power system owners and users. The main purpose of a protection system is to recognize any abnormal power system condition(s), or abnormally operating...

Relion® protection and control relays The Relion® family offers the widest range of products for protection, control, measurement and supervision of power systems for IEC and ANSI applications – from generation and interconnected grids over primary distribution to secondary distribution kiosks. ABB's Relion protection relays are deeply rooted in ABB’s vast experience of developing successful protection and control relays. These relays have been developed during many years and are built on the experience gathered from wide ranging application and functionality requirements from ABB’s customers...

The Relion product family includes: Relion 605 series The Relion 605 series protection relays feature basic devices that fulfill the essential protection needs in medium-voltage networks. The series is best suited for secondary distribution applications. These relays are well-known for their straight forward approach to protection. Relion REX610 REX610 covers the full range of basic utility and industrial applications. The modular and scalable design makes creating unique protection solutions easy, whereas the extensive range of default functionality, including communication, allows easy alterations...

Feeder protection Feeder protection, or more exactly protection for overhead lines and cables, is the most used type of protection in power systems. The protection has to ensure that the power grid continues to supply energy. In the event of a fault, it has to be prevented from spreading to healthy parts of the network. The relays also have to minimize the damage to the cables and other connected equipment, as well as ensure safety for operating personnel. ABB's wide offering for feeder protection suits different requirements. The offering ranges from protection relays for general feeder protection...

— 01 Basic range: Feeder protection REF601 and self-powered feeder protection REJ603 — 02 Medium range: Protection and control REX610, Protection and control REX615 standard and wide — 03 High range: Multiapplication Protection and Control REX640 and Smart Substation Control and Protection SSC600 functions. The REX615 with base functionality can be enhanced with application packages for feeder protection, fault location, line differential protection and interconnection feeder protection. Smart Substation Control and Protection SSC600 SSC600 represents a new approach to protection and control...

Transformer protection The power transformer is an important component and one of the most valuable discrete units in power distribution networks. High availability of the power transformer is of particular importance for preventing disturbances in the power distribution system. Although high-quality power transformers are very reliable, insulation breakdown faults occasionally occur. These faults appear as short circuits and/or earth faults. They tend to cause severe damage to the windings and transformer core. The damage is proportional to the fault clearing time, so the power transformer must...

— 01 Protection and control REX615 standard and wide — 02 Multiapplication Protection and Control REX640 and Smart Substation Control and Protection SSC600

Motor protection Motor protection is generally expected to provide overcurrent, unbalance, earth-fault and short-circuit protection of the motor. However, the fundamental issue for motors is thermal protection, as overheating is the worst threat. Motors need to be protected not only against electrical faults, but also against any improper usage. ABB’s solutions focus on advanced thermal protection that prevents improper use. Overload conditions of short duration mainly occur during start-up. Improper use of running motors does not necessarily damage the equipment, but shortens its life span....

— 01 Basic range: Motor protection and control REM601 — 02 Medium range: Protection and control REX610, Protection and control REX615 standard and wide — 03 High range: Multiapplication Protection and Control REX640 and Smart Substation Control and Protection SSC600 For more information, please refer to the following documentation. • Protection and Control REX610 Product Guide • Protection and Control REX615 Product Guide • Multiapplication Protection and Control REX640 Product Guide • Smart Substation Control and Protection SSC600 Product Guide

Generator protection Generators or generating units constitute one of the most crucial parts in a power system, making it essential to use a proper protection scheme. A generator has more failure modes than any other component in the power system. It is very important that the protection system detects all faults and that it does so quickly, as they may cause injury to personnel and damage to the equipment. A rotating machine provides a classic application for differential protection. The generator differential protection gives a fast and absolutely selective detection of generator stator short...