Figure. 5.4.27 - 140. Impedance must enter the circle first then cross the blinders and lastly exit the circle for the function to
count a slip. Impedance can enter the circle from either side but it must keep entering the circle from the same side for the
function to keep counting the slips.
The pick-up activation of the function is not directly equal to the START signal generation of the
function. The START signal is allowed if the blocking condition is not active.
Read-only parameters
The relay's
Info page displays useful, real-time information on the state of the protection function. It is
accessed either through the relay's HMI display, or through the setting tool software when it is
connected to the relay and its Live Edit mode is active.
Table. 5.4.27 - 224. Information displayed by the function.
Name
Range
Description
Pole slip [78] LN
behaviour
1: On
2: Blocked
3: Test
4: Test/Blocked
5: Off
Displays the mode of OOS block.
This parameter is visible only when
Allow setting of individual LN mode is enabled
in
General menu.
Pole slip condition
0: Normal
1: Start
2: Trip
3: Blocked
Displays status of the protection function.
Configuration status
0: Ok
1: Incorrect VT
set
2: Incorrect char.
Set
Displays the status of settings currently in use.
A
AQ
Q-M257
-M257
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00021
271
Summary of Contents for AQ-M257
Page 1: ...AQ M257 Motor protection IED Instruction manual...
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