Siemens SENTRON PAC4200, Руководство пользователя, Страница: 36 / 252

Description
3.5 Tariffs
SENTRON PAC4200
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Manual, 09/2008, A5E02316180B-01
3.5 Tariffs
SENTRON PAC4200 supports two tariffs for the integrated energy counters (on-peak and
off-peak).
Impact of the tariff change
The tariff change affects all energy counters for active energy, reactive energy, and apparent
energy.
Control of the tariff change
A tariff change between off-peak and on-peak can be requested by means of a digital input
or via the communication interfaces.
Time-related switching is only possible using a higher-level system.
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 following measured variables are supplied by SENTRON PAC4200 for evaluating
supply quality:
●
Harmonics up to the 31st harmonic
● THD for voltage and current:
● Displacement angle φ
● Cosine of the displacement angle φ
● Phase angle
● 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.