Iskra MT440 User manual
User’s Manual
Multifunction Transducer MT440
GB
Tableofcontents
User’sManualiii
Table of Contents
1.SECURITY ADVICE AND WARNINGS ________________________________________1
1.1 Welcome--------------------------------------------------------------------------------------------- 2
1.2 Introduction----------------------------------------------------------------------------------------- 2
1.3 Health and safety----------------------------------------------------------------------------------- 2
1.4 Safety warnings and instructions for use-------------------------------------------------------- 2
1.5 Warnings, information and notes regarding designation of the product ------------------- 3
2.BASIC DESCRIPTION AND OPERATION OF MEASURING TRANSDUCER _________4
2.1 Introduction----------------------------------------------------------------------------------------- 5
2.2 Glossary --------------------------------------------------------------------------------------------- 6
2.3 Description of the product ------------------------------------------------------------------------ 6
2.4 Purpose and use of measuring transducer------------------------------------------------------ 8
3.CONNECTION ___________________________________________________________9
3.1 Introduction----------------------------------------------------------------------------------------10
3.2 Mounting -------------------------------------------------------------------------------------------10
3.3 Electric connection--------------------------------------------------------------------------------10
3.4 Connection of input/output modules------------------------------------------------------------12
3.5 Communication connection----------------------------------------------------------------------12
3.6 Connection of auxiliary power supply----------------------------------------------------------14
4.SETTINGS ______________________________________________________________15
4.1 Introduction----------------------------------------------------------------------------------------16
4.2 MiQen software------------------------------------------------------------------------------------16
4.3 Setting procedure----------------------------------------------------------------------------------17
4.4 General settings -----------------------------------------------------------------------------------17
4.5 Connection -----------------------------------------------------------------------------------------19
4.6 Communication------------------------------------------------------------------------------------20
4.7 Security ---------------------------------------------------------------------------------------------20
4.8 Energy ----------------------------------------------------------------------------------------------21
4.9 Inputs and outputs---------------------------------------------------------------------------------21
4.10 Alarms---------------------------------------------------------------------------------------------25
4.11 Reset operations ---------------------------------------------------------------------------------25
5.MEASUREMENTS _______________________________________________________26
5.1 Introduction----------------------------------------------------------------------------------------27
5.2 Supported measurements-------------------------------------------------------------------------27
5.3 Available connections ----------------------------------------------------------------------------27
5.4 Explanation of basic concepts-------------------------------------------------------------------29
5.5 Calculation and display of measurements -----------------------------------------------------30
5.6 Present values -------------------------------------------------------------------------------------30
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ivUser’sManual
6.TECHNICAL DATA_______________________________________________________32
6.1 Applied standards---------------------------------------------------------------------------------33
6.2 Accuracy--------------------------------------------------------------------------------------------34
6.3 Inputs -----------------------------------------------------------------------------------------------35
6.4 Connection -----------------------------------------------------------------------------------------35
6.5 I/O modules ----------------------------------------------------------------------------------------36
6.6 Communication------------------------------------------------------------------------------------37
6.7 Electronic features--------------------------------------------------------------------------------37
6.8 Safety features -------------------------------------------------------------------------------------37
6.9 Mechanical-----------------------------------------------------------------------------------------38
6.10 Environmental conditions ----------------------------------------------------------------------38
6.11 Dimensions ---------------------------------------------------------------------------------------38
7.APPENDIX A: MODBUS PROTOCOL _______________________________________40
7.1 Modbus communication protocol ---------------------------------------------------------------41
8.APPENDIX B: CALCULATIONS & EQUATIONS_______________________________51
8.1 Calculations----------------------------------------------------------------------------------------52
8.2 Equations-------------------------------------------------------------------------------------------53
Securityadviceandwarnings
User’sManual1
1. SECURITY ADVICE AND WARNINGS
1.1 Welcome--------------------------------------------------------------------------------------------- 2
1.2 Introduction----------------------------------------------------------------------------------------- 2
1.3 Health and safety----------------------------------------------------------------------------------- 2
1.4 Safety warnings and instructions for use-------------------------------------------------------- 2
1.5 Warnings, information and notes regarding designation of the product ------------------- 3
Securityadviceandwarnings
2User’sManual
1.1 Welcome
Please read this chapter carefully before starting work with a measuring transducer.
This chapter deals with important information and warnings that should be considered for safe
handling with a measuring transducer.
1.2 Introduction
This booklet contains instructions for installation and use of measuring transducer MT440.
Installation and use of a device also includes handling with dangerous currents and voltages and
shall be therefore carried out by qualified persons. The Iskra MIS Company assumes no
responsibility in connection with installation and use of the product. If there is any doubt
regarding installation and use of the system in which the instrument is used for measuring or
supervision, please contact a person who is responsible for installation of such system.
1.3 Health and safety
The purpose of this chapter is to provide a user with information concerning safe installation and
handling with the product in order to assure its correct use and continuous operation.
It is essential that everyone using the product is familiar with the contents of chapter »Security
Advices and Warnings«.
If equipment is used in a manner not specified by the manufacturer, the protection provided by
the equipment may be impaired.
1.4 Safety warnings and instructions for use
Check the following before switching on the device:
•Nominal voltage,
•Proper connection of auxiliary supply,
•Nominal frequency,
•Voltage ratio and phase sequence,
•Current transformer ratio and terminals integrity,
•Protection fuse - recommended maximal external fuse size is 6 A,
•Proper connection of I/O modules.
Important: A current transformer secondary should be short circuited before connecting the
transducer.
Important: See Chapter 3.3 Electric connection for safety warnings regarding connection.
Securityadviceandwarnings
User’sManual3
Waste
It is forbidden to deposit electrical and electronic equipment as municipal waste. The
manufacturer or provider shall take waste electrical and electronic equipment free of charge. The
complete procedure after lifetime should comply with the Directive 2002/96/EC about restriction
on the use of certain hazardous substances in electrical and electronic equipment.
1.5 Warnings, information and notes regarding designation of the product
Used symbols:
See product documentation.
Double insulation in compliance with the SIST EN 61010−1
standard.
Functional ground potential.
Note: This symbol is also used for marking a terminal for protective
ground potential if it is used as a part of connection terminal or
auxiliary supply terminals.
Compliance of the product with directive 2002/96/EC, as first
priority, the prevention of waste electrical and electronic equipment
(WEEE), and in addition, the reuse, recycling and other forms of
recovery of such wastes so as to reduce the disposal of waste. It also
seeks to improve the environmental performance of all operators
involved in the life cycle of electrical and electronic equipment.
Compliance of the product with European CE directives.
Contents of consignment
The consignment includes:
−Measuring transducer MT440,
−label for I/O functionality description,
−quick guide.
Basicdescriptionandoperationofmeasuringtransducer
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2. BASIC DESCRIPTION AND OPERATION OF MEASURING
TRANSDUCER
2.1 Introduction----------------------------------------------------------------------------------------- 5
2.2 Glossary --------------------------------------------------------------------------------------------- 6
2.3 Description of the product ------------------------------------------------------------------------ 6
2.4 Purpose and use of measuring transducer------------------------------------------------------ 7
Basicdescriptionandoperationofmeasuringtransducer
User’sManual5
2.1 Introduction
Description of symbols
In different chapters or tables different symbols may appear in User’s Manual. According to the
position of symbols, they have different meaning.
Subchapter
Symbols next to the subchapters indicate accessibility of functions described. Accessibility of
functions is indicated with the following symbols:
−Function accessible via communication (MiQen software)
Tables
Supported functions and measurements are listed in tables. Symbols in tables indicate support of
enabled functions. Additionally a legend is placed below table of used symbols. Meaning of
symbols is:
●−Function is supported
× −Function is not supported
○−Symbol meaning varies and is described in the legend below the table
User information
For unknown technical terms please refer to Glossary on the next page.
Basicdescriptionandoperationofmeasuringtransducer
6User’sManual
2.2 Glossary
Term Explanation
RMS Root Mean Square value
MODBUS Industrial protocol for data transmission
MiQen Software for Iskra MIS instruments
AC Alternating voltage
PA total Angle calculated from total active and apparent power
PA1, PA2, PA3 Angle between fundamental phase voltage and phase current
PF Power factor
THD Total harmonic distortion
MD Measurement of average values in time interval
Hand-over place Connection spot of consumer installation in public network
Mv−Sample factor Defines a number of periods for measuring calculation on the
basis of measured frequency
Mp−Average interval Defines frequency of refreshing displayed measurements on
the basis of a Sample factor
Hysteresis expressed as percentage
[%]
Percentage specifies increase or decrease of a measurement
from a certain limit after exceeding it.
PO Pulse output module
AL Alarm output module
AO Analog output module
FAO Fast analog output module
DO Digital output module
2.3 Description of the product
Measuring transducer is intended for measuring, analyzing and monitoring single-phase or three-
phase electrical power network. It measures RMS value by means of fast sampling of voltage
and current signals, which makes instrument suitable for acquisition of transient events. A built-
in microcontroller calculates measurements (voltage, current, frequency, energy, power, power
factor, THD phase angles, etc.) from the measured signals.
This manual suits for next models
1
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