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SMS ISKRA MT375 User Manual

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Energy Measurement and Management
ME371,
MT371
Single- and Three-Phase
Electronic Meters with Built-in
DLC Communication Channel
ME372,
MT375
Single- and Three-phase
Electronic Meters with Built-in
GSM/GPRS Modem or RS485
Communication Interface
Technical
Description
EAD 020.611.325
Version 2.00, 29.05.2008

Table of Contents

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SMS ISKRA MT375 Specifications

General IconGeneral
BrandSMS
ModelISKRA MT375
CategoryMeasuring Instruments
LanguageEnglish

Summary

Energy Measurement and Registration

Multi-tariff Registration

Registration of energy and power across up to four tariffs.

Power Measurement

Measurement of power within defined periods for billing.

Supplied Energy or Power Limitation

Meter functions for limiting or disconnecting energy supply based on set limits.

Prepaid Functionality

Meter operation based on prepaid credit with disconnection logic.

Meter Configuration

Power Supply Unit

Description of the meter's power supply stage and its capabilities.

Microcontroller with FRAM

Details on the microcontroller and its memory for data processing and control.

Real-time Clock (RTC)

Features and accuracy of the meter's internal real-time clock and super-cap.

Time-of-use Registration

Tariff registration based on time-of-use, seasons, day types, and holidays.

Maximum Demand

Calculation and registration of maximum demand over specified demand periods.

Liquid Crystal Display – LCD

Description of the LCD display, symbols, OBIS codes, and data presentation.

Push-buttons

Overview of the meter's push-buttons for operation, navigation, and mode switching.

Manual Meter Billing Reset

Procedure for performing a manual billing reset of the meter.

Communication Channels

Overview of available communication interfaces for remote and local data transfer.

Optical Port – IR Communication Interface

Local meter programming and data downloading via optical port.

DLC Modem (Mx371)

Built-in DLC modem for remote two-way communication over low voltage networks.

Integrated GSM/GPRS Communication Interface with Antenna (Option) (Mx372)

GSM/GPRS interface for remote data transmission and management.

RS485 Communication Interface (Option) (Mx372)

RS485 interface for meter parameter setting and local readout.

M-Bus Communication Interface (Option)

M-Bus interface for connecting slave devices like water or gas meters.

Additional Meter Functions

Remote Customer Connection/Disconnection

Using a switching device for remote connection/disconnection of customer supply.

Security

Security model including authentication and encryption keys for data protection.

Data Protection

Meter Connection Procedure

Anti-fraud Protection

Meter Connection

Technical Data

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