Siemens SENTRON PAC4200, Manual, Page: 35 / 252

Description
3.4 Load profile
SENTRON PAC4200
Manual, 09/2008, A5E02316180B-01
35
Impact of a tariff change on the load profile
Tariff changes between off-peak and on-peak have an impact on the load profile because all
values stored in the profile are uniquely assigned to the applicable tariff.
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.
Impact of a measuring voltage failure
A failure of the measuring voltage has no effect on the load profile.
Impact of a supply voltage failure
The device records shorter periods if the supply voltage fails and when it is restored.
It does not record any substitute values for the duration of the power failure.
3.4.5 Additional information about the load profile data
SENTRON PAC4200 records the following additional information for each period:
●
"Resynchronized"
The period was prematurely ended by the device owing to a synchronization irregularity.
● "Supply voltage failed"
The period was prematurely ended owing to the failure of the supply voltage.
● "Unreliable"
The load profile data is unreliable.
–
The measuring current or the measuring voltage is outside the specified range.
– The reactive power type has changed.
The additional information is stored together with the other load profile data and can be
called via the communication interface.
See also
Load profile (Page 195)