KOMAR DOBERLET
B0024445
Mx37y TEHNIČNI OPIS
5.6.2009
Mx37y TECHNICAL DESCRIPTION
020611325_003_000_AD.doc
Mx37y
LAD
020.611.325
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3.
1.
Energy measurement and
registration
The meter measures and records electric energy:
• In a single-phase two-wire network (also
MT37y)
• Three-phase three-wire network (MT37y)
• Three-phase four-wire network: (MT37y)
total (∑ Li)
only positive active energy
positive and negative active energy (A+, A-)
separately
absolute active energy A
only positive reactive energy
positive and negative reactive energy (R+,R-)
separately
apparent energy
Meters are provided with two LEDs on the front plate.
They are intended for checking the meter accuracy.
Impulse constant depends on the meter version
(direct or current transformer meter).
Fig. 2: MT372 meter with ZO3 plug-in switching device
1.1 Multi-tariff registration
The meter enables registration of energy and power.
Up to four tariffs (8 tariffs is an option) for power and
energy can be registered. Tariff changeover is
defined with hour and minute. Minimal resolution
between changeovers is one minute.
Different combinations of the tariff program are
avaliable:
• Up to 4 tariff rates (8 rates as an option)
• Up to 4 seasons
• Up to 4 day types (8 as an option)
• Up to 8 individual changeovers inside individual
daily program
• Up to 32 programmable holidays
• Support to lunar holidays in compliance with
the Gregorian calendar.
1.2 Power measurement
Power is measured inside a measuring period. The
measuring period is a meter parameter and can be
set. Values that can be set are 15, 30 and
60 minutes. After termination of the measuring
period, the measured meter value is transferred from
current measuring period registers to registers for
previous measuring period that can be later used for
the formation of billing profile values.
1.3 Load-profile
Two load-profile recorders can be provided with up to
16 channels (values) each. In the first load-profile
(time stamp, status, register-value) approx. 33,000
records (60 minutes, ~ 1400 days) and in the second
-one approx. 190 (1 day, ~ 190 days) records can be
recorded. The saving period (a recording period) can
be set. Available values are 15, 30 and 60 minutes or
a daily value.
Data in a load-profile recorder are accompanied with
a time stamp and with the meter status in the last
saving period as well as with a check sum. The time
stamp indicates the end of a registration period.
Memory capacity of the load-profile recorder for 15-
minute registration period is around 190 days
(extended load-profile capacity).
1.4 Supplied energy or power
limitation
The limitation or disconnection functionality can be
activated in the meter itself or by remote action.
The meter disconnects the network (via a switching
device) if a maximum energy limit was exceeded
during a predefined period of time. The energy level
and the allowed exceeding period are set in the
meter.
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