ISKRAEMECO MT174 User Manual

Energy Measurement and Management
MT174
Three-Phase Static Electricity
Multi Tariff Meter
with Maximum Demand Indicator
and Load-profile
MT174 - Electronic three-phase electricity
meters with maximum demand and LP
MT174 - Electronic three-phase
time-of-use electricity meters
The MT174 electronic three-phase meters are
designed for measurement and registration of
active, reactive and apparent energy and
demand in three-phase four-wire networks. They
can be connected directly to the network. The
metering and technical properties of the meters
comply with the EN 50470-1 and -3 European
standards for active energy meters, classes A
and B, as well as with the IEC 62053-21 and IEC
62052-11 international standards for electronic
meters of active energy for classes 1 and 2, and
optionally with the IEC 62053-23 international
standard for electronic meters of reactive energy
for classes 2 and 3.
A built-in time-switch complies with the IEC
62054-21 and IEC 62052-21 standards. It enables
energy registration in up to four tariffs.
The meter software complies with WELMEC 7.2
Issue 1 Software Guide (Measuring Instruments
Directive 2004/22/EC).
The MT174 meters are designed for mechanical
environment M1, electromagnetic environment
E2 and climatic environment -40°C ... +60°C,
relative humidity 95% non-condensing, closed
location. The meters can be installed in any
position.
The meters are designed and manufactured in
compliance with the ISO 9001 (2000) standard.

ISKRAEMECO MT174 Specifications

General

Voltage	3x230/400 V
Frequency	50 Hz or 60 Hz
Display	LCD
Storage Temperature	-40 °C to +70 °C
Protection Class	IP54
Weight	Approx. 1.5 kg
Accuracy Class	Class 1 or 2
Communication	RS485
Current	5(60)A, 10(100)A, etc.

Summary

MT174 Three-Phase Static Electricity Meter

Terminal Block for Direct Connected Meters

Terminal Block for CT Operated Meters

Auxiliary Terminals

Describes the function and types of auxiliary terminals available for meter configuration and output.

Meter Connection Diagrams

Connection Diagrams for Direct Connected Meters MT174

Illustrates how to connect direct-connected MT174 meters to the network.

Connection Diagram for CT Operated Meter MT174

Illustrates how to connect CT-operated MT174 meters to the network.

Meter Installation Procedure

LCD Display Features

Data Display

Explains how data is presented on the LCD, including auto and manual scroll sequences.

Signal and Alarm Flags

Details the meaning of various signal and alarm flags displayed on the LCD.

LED Indicators

Meter Pushbuttons and Operation

Reset and Data Scroll Functions

Details the functions of the reset and data scroll pushbuttons on the meter cover.

Display Testing Procedure

Manual Data Display

Manual Scroll List

Lists the available data points accessible through the manual scroll sequence on the LCD.

Pulse Output Configuration

MT174 Meter in Photovoltaic Installations