P92x/EN FT/E11 Technical Guide
User Guide
Page 10/110 MiCOM P921-P922-P923
3. MENU COLUMNS OF THE MiCOM P921 RELAY
The menu of the MiCOM P921 is divided into columns which are:
HEADINGS OF
COLUMN
SUB – MENUS DESCRIPTION See at
PAGE
OP PARAMETERS General settings and data for the relay 16
CONFIGURATION 18
GENERAL Configuration of the default display, of the
connection and of the protection (phase-
phase or phase-neutral)
19
VT RATIO Settings of the primary and secondary rated
voltages of VTs
20
LED LED 5 to
LED 8
Configuration of the programmable LEDs 21
ALARMS Configuration of the instantaneous self
reset.
27
CONFIGURATION
INPUTS
Logic input configuration, selection of
voltage type applied to the logic inputs
28
MEASUREMENTS Directly measured and calculated quantities 30
COMMUNICATION Information on the rear active protocol and
choice of the associated settings
35
PROTECTION Configuration of the protective features 39
[27]UNDERVOLTAGE Undervoltage settings 40
[59]OVERVOLTAGE Overvoltages settings 41
[59N]RESIDUAL O/V Residual O/V settings 44
AUTOMAT. CTRL 55
TRIP OUTPUT RLY Allocation of the selected information to the
trip output contact (RLI)
55
LATCH OUTPUTS Selection of the latched information 58
BLOCKING LOG1 t Allocation of the selected information to the
blocking logic function 1
62
BLOCKING LOG2 t Allocation of the selected information to the
blocking logic function 2
64
AUX OUTPUT RLY Allocation of the selected information to the
auxiliary output contacts (RL2 to RL4)
65
LATCH OUTPUT
RELAYS
Selection of latched output relays 70
AND LOGIC EQUAT Definition of the 2 logic equations (AND) 71
T DELAY EQUATION Definition of the associated timers 79
INPUTS Allocation of the selected information to the
logic inputs
81
CB SUPERVISION Settings of the close and open pulse
commands
83
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