CPT-DIN Basic Version Carlo Gavazzi Group, CPT-DIN Basic Version Datasheet - Page 4

• Manufacturer Part Number: CPT-DIN Basic Version
• Description: Power Transducers
• Manufacturer: Carlo Gavazzi Group

CPT-DIN
Used calculation formulas
Phase variables
Instantaneous effective voltage
Instantaneous active power
Instantaneous power factor
Instantaneous effective current
Instantaneous apparent power
Instantaneous reactive power
4
Waveform of the signals that can be measured
Figure A
Sine wave, undistorted
Fundamental content
Harmonic content
A
Accuracy
Wh, accuracy (RDG) depending on the current
rms
PF=L0.5
+4%
-2%
+2%
-4%
0%
or C0.8
=
PF=1
Accuracy limits (Active energy)
5(6A) Start-up current: 30mA
Error
(0.05Ib)
(0.1Ib)
0.25A
0.5A
0.5A
(0.1Ib)
1A
(0.2Ib)
1.1107 | A |
100%
0%
5A (Ib)
5A (Ib)
Figure B
Sine wave, indented
Fundamental content
Harmonic content
Frequency spectrum: 3rd to 16th harmonic
Additional error: <1% FS
System variables
Equivalent three-phase voltage
Three-phase reactive power
Neutral current
Three-phase active power
Three-phase apparent power
Three-phase power factor
An = A
6A (Imax)
6A (Imax)
L1
+A
L2
+A
Specifications are subject to change without notice
L3
varh, accuracy (RDG) depending on the current
sinϕ=0.5
+6%
-3%
-6%
+3%
0%
(TPF)
sinϕ=1
10...100%
Accuracy limits (Reactive energy)
5(6A) Start-up current: 30mA
Error
0...90%
(0.02Ib)
(0.05Ib)
0.25A
0.1A
Figure C
Sine wave, distorted
Fundamental content
Harmonic content
Frequency spectrum: 3rd to 16th harmonic
Additional error: <0.5% FS
Energy metering
Where:
i = considered phase (L1, L2 or L3)
P = active power
Q = reactive power
t
of consumption recording
n = time unit
∆t = time interval between two successive
power consumptions
n
points of consumption recording
1
1
, t
, n
0.25A
(0.05Ib)
0.5A
(0.1Ib)
2
2
=starting and ending time points
= starting and ending discrete time
5A (Ib)
5A (Ib)
CPT-DINBDS190606
6A (Imax)
6A (Imax)
70...90%
10...30%