REG 316*4 1MRB520049-Uen / Rev. G ABB Switzerland Ltd
10-5
10.7. Changes in Version 5.2 in relation to Version 5.1c
10.7.1. Frequency rate of change protection
A df/dt function has been added to the function block library.
Because of an error, however, it is not displayed for all the
software keys there are (see Section 10.8.1.).
10.7.2. Touch screen or SMS in parallel with the SCS connection
Where a station control system (SCS) is connected via a LON or
MVB bus, there is a second fully functional SPA interface
available in parallel which can be used for connecting a touch
screen an SMS.
10.8. Changes in Version 5.2a in relation to Version 5.2
10.8.1. Frequency rate of change protection ‘df/dt’
V5.2a of the HMI shows the ‘df/dt’ function for all software keys,
for which the ‘Frequency’ function has been enabled.
10.9. Changes in Version 6.0 in relation to Version 5.2(a)
10.9.1. Directional overcurrent functions ‘DirCurrentDT’ and
‘DirCurrentInv’
Two directional overcurrent functions ‘DirCurrentDT’ with definite
time and ‘DirCurrentInv’ with inverse time characteristic have
been added to the function block library. They are accessible for
all software keys for which the current and voltage functions are
enabled.
10.9.2. Breaker failure protection ‘BreakerFailure’
A ‘BreakerFailure’ function has been added to the function block
library which is accessible to all software keys.
10.9.3. Runtime supervision
A runtime supervision function can be specified for pairs of
inputs that have been configured as “double indications”
(see Section 5.5.5.5.).
To Next Page
Loading...
