Technical data

2CMC480022C0003| Electricity meters 35
DELTAmax
Description
The DELTAplus is an advanced four quadrant meter for
installation in three phase networks.
The meter is mounted
on a DIN rail and is suitable for installation in distribution
boards and small enclosures such as consumer units.
The
meter measures active or combined (active and reactive)
energy. The product supports a wide voltage range and a
wide temperature range which makes it suitable for instal-
lation in many applications.
General features
DELTAmax has a lot of functionality. The built-in clock function is
used to log meter data in a load profile or control the setting of
tariffs.ItiseasytoreadthelargeLCDdisplaywith7mmhighdigits
and symbols for load indication, errors etc. The meter has LED on
the front that flashes proportionally to the measured energy. The
energy consumption of the meter is very low, less than 0.6 VA.
Communication
Data from DELTAmax is collected via pulse output or serial
communication. The pulse output is a polarity independent
solid state relay that generates pulses proportionally to the
measured energy. DELTAmax can be equipped with a built-in
communication interface for M-Bus. All DELTAmax meters come
with an infrared port for communication with an external Serial
Communication Adapter (SCA). There are SCAs for M-Bus,
RS-232, Ethernet and GSM/GPRS.
Tariffs
The DELTAmax range includes meters for 2 and 4 tariffs. The tariffs
are controlled via internal clock or via communication.
Instrumentation
Through the instrumentation functionality of DELTAmax,
the following electrical properties can be read
• Activepower(perphaseandtotal)
• Apparentpower(perphaseandtotal)
• Reactivepower(perphaseandtotal)
• Current(perphase)
• Voltage(perphase)
• Frequency
• Powerfactor
• Activequadrant
• Totalcurrentharmonicdistortion
Inputs and outputs
DELTAmax support two I/O’s. It can be two inputs or two
outputs or one of each. Outputs can be used for controlling
external apparatus like a contactor or an alarm (max 120 mA).
Inputs can be used for counting pulses from e.g. a water meter,
or for reading status from external devices.
Configuration
The configuration of DELTAmax is simple. Using the two but-
tons scroll and set you can configure transformer ratio, pulse
frequency, M-Bus address and baud rate when applicable. The
two push buttons are under a sealable cover. When they are
sealed, the scroll eye on the front of the meter can be used for
reading the parameters and also instrument values.
Installation
DELTAmax comes with an automatic installation check that
indicates problems in the installation.
Approval
DELTAmax is type approved according to IEC and it is both
type approved and verified according to MID. MID is the
Measuring Instruments Directive 2004/22/EC from the European
Commission. MID type approval and verification is mandatory
for meters in billing applications within EU and EEA.
The type approval is according to standards that covers all
relevant technical aspects of the meter. These include climate
conditions, electromagnetic compatibility (EMC), electrical
requirements, mechanical requirements and accuracy.