Instruction manual
–
AQ G3x7 Generator protection IED
136 (211
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PsL2L3_1
The impedance in the fault loop L2L3 performed the given number of
pole slips
PsL3L1_1
The impedance in the fault loop L3L1 performed the given number of
pole slips
The parameters needed in the characteristic evaluation procedure of the pole slip function
are explained in the following Tables.
Parameter
Setting value, range
and step
Description
Max. cycle
number
1…10 cylces, by
step of 1
Definition of the number of the vector revolution up to the trip
command
Parameter
Setting value, range
and step
Description
R forward
0.10…150.00 ohm,
by step of 0.01 ohm
R setting of the impedance characteristics in forward direction
X forward
0.10…150.00 ohm,
by step of 0.01 ohm
X setting of the impedance characteristics in forward direction
R backward
0.10…150.00 ohm,
by step of 0.01 ohm
R setting of the impedance characteristics in backward direction
X backward
0.10…150.00 ohm,
by step of 0.01 ohm
X setting of the impedance characteristics in backward direction
3.2.22.6
The trip logic (TRIP LOGIC) and timing
Parameter
Setting value, range
and step
Description
Dead time
1000…60000msec,
by step of 1msec
Time delay for waiting the subsequent revolution
The trip logic module decides to generate the trip command. The condition is that at least
two out of three phase-to-phase loops detect pole slip in a number required by parameter
setting. And the function is not blocked or disabled.
The duration of the trip pulse is defined by parameter setting
Parameter
Setting value, range
and step
Description
Operation
Off
On
Parameter for disabling the function