CO2 High voltage circuit breakers Enhancing eco-efficiency with LTA LTB-LTA 72 D1 and DCB-LTA 72 D1 The LTA platform features the first high voltage circuit breaker to use carbon dioxide (CO2) as the insulating and arc extinguishing medium. The DCBLTA is designed to help reduce CO2 equivalent emissions by 60% over the life cycle of the products as compared to conventional circuit breakers. New scalable technology platform The LTA circuit breaker platform requires extremely low operating energy and therefore lower operating forces within the breaker. It has been developed using the same technology and similar components as in ABB’s widely used SF6 LTB product range, including the high conductivity, low resistiveloss copper current paths. No gas handling When replacing the SF6 gas with CO2, regulatory issues related by SF6 are avoided. The installation time is shorter and tedious gas handling, associated costs and management procedures are eliminated. The LTA 72D1 uses the same type of mechanical spring drives as ABB’s SF6 LTB product series. These IEC Class M2 drives are designed for 10,000 operations and share components with the mechanical spring drives on ABB‘s extensive worldwide installed base of high-voltage circuit breakers. Also available as disconnecting circuit breaker LTA circuit breakers are also avaliable as a disconnecting circuit-breakers (DCB) that integrate the disconnecting function with the switching function on the LTA platform. Disconnecting circuit breakers enable smarter, safer and greener substations due to the elimination of conventional disconnectors. Substations equipped with disconnecting circuit breakers have higher availability in supplying power, they require less maintenance and space, and CO2 emissions are greatly reduced in comparison to conventional substations. With the web tool www.dcbsubstations.com you can clearly see space and cost savings comparing a DCB substation with traditional designs. Circuit Breaker LTA 72D1 Disonnecting Circuit Breaker LTA 72D1 Two-column stand, three-pole operation Rated voltage: 72.5 kV Two-column stand, three-pole operation, earthing switch Rated voltage: 72.5 kV Ratings Ratings Voltage 72.5 kV Voltage 72.5 kV Current 2750 A Current 2750 A Breaking current 31.5 kA Breaking current 31.5 kA Ambient temperature -50 to +50°C Ambient temperature -50 to +50°C Operation Three-pole Operation Three-pole Product main components Product main components Circuit breaker LTA D Circuit breaker DCB LTA D Operating mechanism MSD1 Operating mechanism MSD1 Earthing switch NVA Operating mechanism SM 800 Standard Fulfills IEC 62271-108 Standard Fulfills IEC 62271-100 Available dimensions for phase distances and heights to lowest part of insulator (mm) Available dimensions for phase distances and heights to lowest part of insulator (mm) Rated voltage Rated voltage 72.5 kV Phase distance 1050 1500 For more information please contact: ABB AB High Voltage Products SE-771 80 Ludvika, Sweden Phone: +46 (0)240 78 20 00 E-mail:[email protected] www.abb.com www.abb.com/highvoltage 1750 72.5 kV Phase distance 1050 1500 1750 ©Copyright 2015 ABB, All rights reserved NOTE: ABB AB is working continuously to improve the products. We therefore reserve the right to change designs, dimensions and data without prior notice. Document ID 1HSM 9543 22-19en Edition 5, 2015-02 LTA CO2 Hign Voltage Circuit Breakers Technical Data
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