ABB | SACE Tmax XT
Glossary |
3 | © 2020 ABB | 1SDH001821A1002 - ECN000135670
Glossary
Term
Description
SACE Tmax XT7
New series of ABB SACE moulded-case circuit-breakers
CB
Circuit-breaker
Trip unit / Protection
release
Electronic unit connected to the CB (Mainboard), which provides measuring, monitoring and protection functions
for the CB if faulty operating conditions occur. In the event of an alarm, it commands a TRIP
Mainboard
Electronic board of the CB to which the Trip Unit and all the main accessories and electronic actuators connect
Ekip Touch
Trip unit for SACE Tmax XT7 CB, equipped with touchscreen display and available in six different versions
Trip coil
CB opening actuator controlled directly by Trip unit
TRIP
Concluding action of protection timing or a test command which, except in special configurations applicable to the
trip unit, coincides with activation of the trip coil, which instantly opens the bars of each pole and interrupts the
circulating current
Vaux
Auxiliary power supply
4P / 3P / 3P + N
CB configuration: four-pole (4P), three-pole (3P) and three-pole with external neutral (3P + N)
If
Fault current measured by Trip unit, useful for calculating the trip time t
t
