CIRCUTOR CIRWATT-B410T Series - Manual (Page 23)

THREE PHASE STANDARD CIRWATT B METER
CIRWATT B THREE PHASE INSTRUCTION MANUAL 23 / 53
Where:
Pdj = power demanded in each quarter of an hour of the period i in which
Pci has been exceeded.
Pci = power contracted in the period i in the period in question
1.28.- Events
All of the dates of setup modifications, battery changes, clock changes, billing closures, etc.
are registered.
The device has a storage capacity of 200 registers. Data within the file is organized in a
round-robin structure. This means that once the memory is full, the new data will be saved
over the top of the oldest data. This system ensures that the meter always has up-to-date
information, and that this corresponds to the latest obtained data.
1.29.- Daylight saving time
The meter will automatically make the changes necessary for daylight saving time. In the event
that the device is without power at that moment, the change will be made when power is
restored and the device starts up.
The parameters that define this change have two different formats: one of them is generic,
allowing for automatic annual updates, and the other incorporates the parameters included in
the specific message from the communications protocol. The formats are:
Generic format, independent of year, with month, day, time, and pre-established move
forwards or backwards, in accordance with current regulations (last Sunday in March,
and last Sunday in October).
Format specifying the year, with month, day, time, move forwards or backwards.
The daylight saving parameters, regardless of which format they are programmed in, are
automatically updated at the beginning of the year, in accordance with the generic format. In
the event that the message for the updating of daylight saving time is received within the
communications protocol, the format will be modified according to what is established in last
message.