Operation Manual of DTS27 Three-phase Energy Meter
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saved as a value of a past month automatically, and the maximum demand of a new month is measured
starting from zero.
3) The unit of active maximum demand: W
4) The calculation method of maximum demand:
The calculation cycle of maximum demand and the number of cycles can be programmed to: 1…60
minutes.
4.2 Multiple tariff rates
1) Up to 12 season schedules can be set throughout a year, each season schedule can specify different weekly
schedules.
2) Up to 8 weekly schedules can be set, and each weekly schedule can specify different day schedules.
3) Up to 100 special days can be set, and each special day can specify different day schedules.
4) Up to 8 day schedules can be set, each day schedule can set 12 periods of time at most; each period of time
can specify different tariff rate. Up to 8 tariff rates are supported. The minimum interval of the period of
time is 1 min.
5) The general configuration is applicable to the tariff, if the year where the season tariff is arranged is set as
general configuration, then, the year where all season tariffs are arranged must be general configuration,
that is keep the consistency, in addition, the month and date where the season tariff is arranged cannot be
set as not specified (0xFF), and the month where the season tariff is arranged cannot be set as daylight
savings end (0xFD) and daylight savings begin (0xFE) either.
6) The general configuration is not applied to the tariff of the period.
7) It is necessary to ensure that in any one year the time (in sequence) of season tariff and period tariff are
arranged exactly the same irrespective of whether they are general configuration or not.
8) The holiday supports all general configurations.
4.3 Electrical parameter (voltage, current and power) measuring
1) Measure and display in real time the r.m.s of the voltage and current of phase A, B and C
2) Measure in real time the power factor of each phase as well as the phase angle
3) Measure in real time the active power.
4.4 Load profile
1) The time interval of the load profile can be set to: 1...60 minutes.
2) The time interval of the load profile is up to 30 minutes, and the data for 260 days can be
recorded.
3) The load profile is capable of recording the data of 8 channels.
4) The data recorded by the load profile can be transmitted to the host management system through
the infrared communication port, and the communication module to draw the use’s load profile such that to
manage the electrical energy consumption reasonably.
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