VAMP 59 - Page 87

Technical description
2 Protection functions
2.13 Programmable stages (99)
VM59.EN001
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87
Table 2.13-1 Available signals to be supervised by the
programmable stages
IL1, IL2, IL3
Phase currents
IL1REM,
IL2REM,
IL3REM
Remote end phase currents
Io
Residual current input I
0
Uo
Zero sequence voltage
f
Frequency
IoCalc
Phasor sum I
L1
+ I
L2
+ I
L3
I1
Positive sequence current
I2
Negative sequence current
I2/I1
Relative negative sequence current
I2/In
Negative sequence current in pu
T
Thermal status
IL
Average (I
L1
+ I
L2
+ I
L3)
/3
ILmin
Minimum of phase currents
ILmax
Maximum of phase currents
THDIL1
Total harmonic distortion of I
L1
THDIL2
Total harmonic distortion of I
L2
THDIL3
Total harmonic distortion of I
L3
IL1RMS
IL1 RMS for average sampling
IL2RMS
IL2 RMS for average sampling
IL3RMS
IL3 RMS for average sampling
Io1RMS
Io1 RMS for average sampling
Eight independent stages
The device has eight independent programmable stages. Each
programmable stage can be enabled or disabled to fit the
intended application.
Setting groups
There are two settings groups available. Switching between
setting groups can be controlled by digital inputs, virtual
inputs (communication, logic) and manually.
There are two identical stages available with independent
setting parameters.