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Appendix
A
Description of measured quantities
Used abbreviations
1L
Single phase system
2L
Split phase; system with 2 phases and center 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
These measured quantities are determined using the configured measurement time (1...1024 cycles). 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 the display unit or via the configuration
interface.
Measurement
pr
es
e
nt
ma
x
mi
n
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
● ●
√ √
√ √
Bimetal current 1...60min. IB
● ●
√
√
√
Bimetal current 1...60min. IB1
● ●
√
√ √
√ √
Bimetal current 1...60min. IB2
● ●
√
√ √
√ √
Bimetal current 1...60min. IB3
● ●
√ √
√ √
Neutral current I
N
● ●
√ √
Active power P
● ●
√ √ √ √ √ √ √ √
Active power P1
● ●
√
√ √
Active power P2
● ●
√
√ √
Active power P3
● ●
√ √
Reactive power Q
● ●
√ √ √ √ √ √ √ √
Reactive power Q1
● ●
√
√ √
Reactive power Q2
● ●
√
√ √
Reactive power Q3
● ●
√ √
Apparent power S
● ●
√ √ √ √ √ √ √ √
Apparent power S1
● ●
√
√ √
Apparent power S2
● ●
√
√ √
Apparent power S3
● ●
√ √
Frequency F
● ● ● √ √ √ √ √ √ √ √
