VAMP 259 - Page 149

Technical description
3 Supporting functions
3.2 Disturbance recorder
VM259.EN007
VAMP 24h support phone +358 (0)20 753 3264
149
Parameter
Value
Unit
Description
Note
AddCh
Add one channel.
Maximum simultaneous
number of channels is 12.
Set
I
L1
, I
L2
, I
L3
Phase current
I
0
Measured residual current
U
L12
, U
L23
,
U
L31
Line-to-line voltage
U
L1
, U
L2
,
U
L3
Phase-to-neutral voltage
U
0
Zero sequence voltage
f
Frequency
P, Q, S
Active, reactive, apparent
power
P.F.
Power factor
CosFii
cos
IoCalc
Phasor sum Io =
(I
L1
+I
L2
+I
L3
)/3
I1
Positive sequence current
I2
Negative sequence current
I2/I1
Relative current unbalance
I2/In
Current unbalance to
nominal ratio
U1
Positive sequence voltage
U2
Negative sequence voltage
U2/U1
Relative voltage unbalance
IL
Average (I
L1
+ I
L2
+ I
L3
)/3
Uphase
Average (U
L1
+ U
L2
+ U
L3
)/3
Uline
Average (U
L12
+ U
L23
+
U
L31
)/3
DO
Digital outputs
DI
Digital inputs
TanFii
tan
THDI
L1
Total harmonic distortion
of I
L1
THDI
L2
Total harmonic distortion
of I
L2
THDI
L3
Total harmonic distortion
of I
L3
THDUa
Total harmonic distortion
of input Ua
THDUb
Total harmonic distortion
of input Ub
THDUc
Total harmonic distortion
of input Uc
DI_2
Digital inputs 21-32
Prms
Active power rms value
Qrms
Reactive power rms value
Srms
Apparent power rms value