Areva MiCOM P921 - Page 139

Technical Guide P92x/EN FT/E11
User Guide
MiCOM P921-P922-P923 Page 61/110
11.2.4 Additional information for the MiCOM P923
LATCH df/dt1 =
NO
Description : selection of the 1
st
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH df/dt2 =
NO
Description : selection of the 2
nd
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH df/dt3 =
NO
Description : selection of the 3
rd
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH df/dt4 =
NO
Description : selection of the 4
th
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH df/dt5 =
NO
Description : selection of the 5
th
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH df/dt6 =
NO
Description : selection of the 6
th
stage of the rate of change of
frequency, which will be latched.
Range : YES/NO
LATCH EQUATION C =
NO
Description : selection of the "C" logic equation which will be
latched.
Range : YES/NO
LATCH EQUATION D =
NO
Description : selection of the "D" logic equation which will be
latched.
Range : YES/NO
11.2.5 Example of configuration
The aim is :
Latching of the output contact RL1, which is linked to the “tV>” information.
Settings are :
· select “YES” for the information which must be latched in the above menu : “tV>”,