20
CIRWATT B 400
Instruction Manual
If a modification is made with an activation date different from the existing one and after the current
date, the date of the last modification received is regarded as the new activation date.
2�24�3 - DELETION OF CONTRACTS
The deletion of a contract consists of setting all the defined parameters as undefined and no longer
displaying that contract's data on the screen.
If more than one contract has been defined and is active and one of them is deleted and the rest are
maintained, at the time of deletion, the billing for the contract to be deleted is closed out. From that
moment on, the information pertaining to the deleted contract is erased and no information on it can
be displayed, except for that pertaining to the closed billing periods that may exist. The remaining
contracts and the corresponding totalizers are not modified.
2�25 - LOAD CURVE
The analyser has two load curves that comply with the specifications set out in Royal Decree 2018/1997
and its Complementary Technical Instructions. Both load curves store records with the number of pa-
rameters required by law. The logging depth in both cases is 4000, and the integration period can be
fully configured by the user. With a 1-hour integration period, it is possible to store more than 5 months
in each load curve.
In the case of voltage failures, or if the clock is moved forward, any gaps in the load curve are filled
with invalid zeros.
An incremental load curve value that does not completely correspond to the hour in which it is included
is marked as invalid. For example, if it is a value that corresponds to the consumption of several hours.
If the load curve request asks for parameters that the device has not recorded, it will reply to the re-
quest with the parameters that it has recorded and will send zero and invalid for those that it does not
have recorded.
The resolution in both cases is 6 digits for the energy values measured in kWh or kVArh (the same as
the one in the meter display). Any change in the recording period of the load curve results in the load
curve being initialised.
2�26 - POWER EXCESSES
They are calculated based on the average power in the last 15 minutes and on the contracted power,
as per RD164/2001.
Equation 1: Excess power�
Where:
Pdj
=
power demanded in each of the period's 15 minutes
i
in which it was exceeded
Pci
Pci
=
power contracted in the period
i
in the period in question.
