Description
3.6 Technical features of the supply quality
SENTRON PAC4200
40
System Manual, 09/2009, A5E02316180B-02
Activation of a tariff change at the end of a period
The old tariff remains valid until the end of the instantaneous period. The new tariff takes
effect at the start of the next period. The energy counters of SENTRON PAC4200 are
switched to the other tariff at the end of the instantaneous demand period.
Without synchronization, the tariff change takes effect immediately.
3.6
Technical features of the supply quality
The SENTRON PAC4200 supplies the following measured variables for evaluating network
quality:
1.
Harmonics up to the 31st harmonic
2.
THD for voltage and current:
3.
Displacement angle φ
4.
Cosine of the displacement angle φ
5.
Phase angle
6.
Unbalance voltage and unbalance current
Harmonics up to the 31st harmonic referred to the fundamental
SENTRON PAC4200 measures the 3rd to 31st odd harmonics referred to the fundamental
for:
●
Voltage ph-ph
●
Voltage ph-n
●
Current
SENTRON PAC4200 measures the instantaneous and maximum values.
The values are represented on the display and can be called via the communication
interfaces.
The display represents the harmonics as a bar diagram and in table form with
instantaneous/maximum values and the time stamp of the maximum value.
Figure 3-5
Instantaneous and maximum values of the harmonics of the ph-ph voltage referred to the
fundamental
The fundamental of the voltage can only be read via the bus.
