39/62 Device handbook SINEAX AM2000, 173 849, 04/2015
Annex
A Description of measured quantities
Used abbreviations
1L
Single phase system
2L
Split phase; system with 2 phases and centre tap
3Lb
3-wire system with balanced load
3Lu
3-wire system with unbalanced load
3Lu.A
3-wire system with unbalanced load, Aron connection (only 2 currents connected)
4Lb
4-wire system with balanced load
4Lu
4-wire system with unbalanced load
4Lu.O
4-wire system with unbalanced load, Open-Y (reduced voltage connection)
A1 Basic measurements
The basic measured quantities are calculated each 200ms by determining an average over 10 cycles at 50Hz resp.
12 cycles at 60Hz. If a measurement is available depends on the selected system.
Depending on the measured quantity also minimum and maximum values are determined and non-volatile stored with
timestamp. These values may be reset by the user via display, see
resetting of measurements
.
Measurement
pr
es
e
nt
m
ax
m
in
1L
2L
3Lb
3Lu
3Lu.
A
4Lb
4Lu.
O
4Lu
Voltage U
● ● ● √ √
√
Voltage U
1N
● ● ●
√
√ √
Voltage U
2N
● ● ●
√
√ √
Voltage U
3N
● ● ●
√ √
Voltage U
12
● ● ●
√ √ √
√ √
Voltage U
23
● ● ●
√ √ √
√ √
Voltage U
31
● ● ●
√ √ √
√ √
Zero displacement voltage U
NE
● ●
√
Current I
● ●
√
√
√
Current I1
● ●
√
√ √
√ √
Current I2
● ●
√
√ √
√ √
Current I3
● ●
√ √
√ √
Neutral current I
N
(calculated)
● ●
√ √
Active power P
● ●
√ √ √ √ √ √ √ √
Active power P1
● ●
√
√ √
Active power P2
● ●
√
√ √
Active power P3
● ●
√ √
Total reactive power Q
● ●
√ √ √ √ √ √ √ √
Total reactive power Q1
● ●
√
√ √
Total reactive power Q2
● ●
√
√ √
Total reactive power Q3
● ●
√ √
Distortion reactive power D
● ●
√ √ √ √ √ √ √ √
Distortion reactive power D1
● ●
√
√ √
Distortion reactive power D2
● ●
√
√ √
Distortion reactive power D3
● ●
√ √
Fundamental reactive power Q(H1)
● ●
√ √ √ √ √ √ √ √
Fundamental reactive power Q1(H1)
● ●
√
√ √
Fundamental reactive power Q2(H1)
● ●
√
√ √
Fundamental reactive power Q3(H1)
● ●
√ √