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