VAMP 259 - Page 125

Technical description
2 Protection functions
2.22 Programmable stages (99)
VM259.EN007
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125
Table 2.22-1 Available signals to be supervised by the
programmable stages
I
L1
, I
L2
, I
L3
Phase currents
I
0
Residual current input I
0
U
L12
, U
L23
, U
L31
Line-to-line voltages
U
L1
, U
L2
, U
L3
Phase-to-ground voltages
U
0
Zero-sequence voltage
f
Frequency
P
Active power
Q
Reactive power
S
Apparent power
Cos Fii
Cosine 
I
0Calc
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
U1
Positive sequence voltage
U2
Negative sequence voltage
U2/U1
Relative negative sequence voltage
IL
Average (I
L1
+ I
L2
+ I
L3)
/3
Uphase (U
LN
)
Average (U
L1
+ U
L2
+ U
L3)
/3
Uline (U
LL
)
Average (U
L12
+ U
L23
+ U
L31)
/3
TanFii
Tangent [=tan(arccos)]
Prms
Active power rms value
Qrms
Reactive power rms value
Srms
Apparent powre rms value
THDI
L1
Total harmonic distortion of I
L1
THDI
L2
Total harmonic distortion of I
L2
THDI
L3
Total harmonic distortion of I
L3
THDU
L1
Total harmonic distortion of input U
L1
THDU
L2
Total harmonic distortion of input U
L2
THDU
L3
Total harmonic distortion of input U
L3
fy
Frequency behind circuit breaker
fz
Frequency behind 2
nd
circuit breaker
I
L1
rms
I
L1
RMS for average sampling
I
L2
rms
I
L2
RMS for average sampling
I
L3
rms
I
L3
RMS for average sampling
U
L12
y
Voltage behind circuit breaker
U
L12
z
Voltage behind 2
nd
circuit breaker
ILmin, ILmax
Minimum and maximum of phase
currents
ULLmin, ULLmax
Minimum and maximum of line
voltages
ULNmin, ULNmax
Minimum and maximum of phase
voltages