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Elgama EPQS User Manual

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Multifunction Meter of
active, reactive and apparent Electric Energy
EPQS
User Manual
Version 5.2a
(PQSEN52a)
“ELGAMA – ELEKTRONIKA, Lithuania 2017
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Elgama EPQS Specifications

General IconGeneral
Rated voltage3x230/400 V
Rated current5 A
Frequency50 Hz
Storage Temperature-40°C to +70°C
Power Supply230V AC
Accuracy classClass B (active energy), Class 2 (reactive energy)
Communication interfaceRS-485
Communication protocolModbus
Frequency Range45 Hz to 65 Hz

Summary

Purpose and Features

Technical Specifications

Lists all technical parameters, performance characteristics, and operating limits of the meter.

Design

General Requirements and Installation Procedure

Outlines safety, environmental, and installation guidelines for proper meter setup.

Electronic Circuitry and Principles of Operation

Explains the internal architecture and how the meter measures energy and processes data.

Communication Interfaces

Covers the various ports and protocols for data exchange and meter configuration.

The Meter Inputs and Outputs

Lists and describes the physical inputs and outputs available on the meter.

Power Supply

Explains the meter's power supply system, voltage range, and surge protection.

Data Registration

Energy Registration

Details how active, reactive, and apparent energy values are measured and stored.

Demand Registration

Explains the process of calculating and storing maximum power demands and load profiles.

Registration of Instantaneous Values

Describes logging of real-time data points into programmable channels.

Parameterisation

Meter Data Protection

Physical Protection of Data and Parameters

Covers physical security measures like sealing to prevent unauthorized access.

Software Protection

Explains software-based security features and audit logging for data integrity.

Password

Details the password system and access levels for data and parameter modification.

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