Iskraemeco Mt880 Manual

MT880

Installation and maintenance manual

V2.00 –English i/vii INTRODUCTION

MT880

Installation and maintenance manual

Document code:

EAM 020.615.636

Version:

V2.00

Language:

English

Date:

24.02.2015

No part of this document can be copied, reproduced, transferred, distributed, presented or stored in any

format without the prior written consent of Iskraemeco, d.d., except as otherwise provided in your license or

as expressly permitted in writing by Iskraemeco, d.d.

TRADEMARKS

The Iskraemeco logo, and all related trademarks are registered trademarks or trademarks of Iskraemeco,

______________________________________________________________________________________

DISCLAIMER AND LIMITATION OF LIABILITY

This manual was written for installation and maintenance of MT880 meter. This manual, including all

documentation incorporated by reference herein such as documentation provided or made available at

Iskrameco d.d. web site, is provided or made accessible "AS IS" and "AS AVAILABLE" and without

condition, endorsement, guarantee, representation, or warranty of any kind by Iskraemeco d.d. and its

affiliated companies (hereinafter collectively referred to as »Iskraemeco«). Iskraemeco assumes no

responsibility for any typographical, technical, or other inaccuracies, errors, or omissions in this

documentation, nor for any loss due to the use of this documentation. Iskraemeco reserves the right to

periodically change information that is contained in this documentation; however, Iskraemeco makes no

commitment to provide any such changes, updates, enhancements, or other additions to this documentation.

Iskraemeco shall not be liable for any type of damages related to this documentation or its use, or

performance or non-performance of any software, hardware, service, or any third party products and

services.

SAVE ASEXPRESSLYPROVIDEDIN YOUR CONTRACTWITH ISKRAEMECO, ISKRAEMECO EXPRESSLY

DISCLAIMSALLWARRANTIES,EXPRESS ORIMPLIED,INCLUDING,BUT NOT LIMITED TOTHEIMPLIED

WARRANTIESOFMERCHANTIBILITYORFITNESS FORA PARTICULARE PURPOSE AND AGAINST

INFRINGEMENT.ISKRAEMECODOESNOTWARRANTTHAT THEFUNCTIONSCONTAINEDINTHE

PRODUCTWILL BE UNITERRUPTEDOR ERROR-FREE, OR THAT DEFECTSINTHE PRODUCT OR ERRORS

IN THE DATAWILLBE CORRECTED. FURTHERMORE,ISKRAEMECO DOES NOTWARRANT OR MAKE ANY

REPRESENTATIONS REGARDINGTHEUSEORTHERESULTSOFTHEUSE OFTHE PRODUCTORITS

DOCUMENTATIONINTERMSOFTHEIR CORRECTNESS, ACCURACY,RELIABILITY,OROTHERWISE.NO

ORAL ORWRITTEN INFORMATIONORADVICE,GIVENBYISKRAEMECOOR ANISKRAEMECO

AUTHORIZED REPRESENTATIVESHALLCREATEAWARRANTYORINANYWAYINCREASE THESCOPEOF

THISWARRANTY. SOMEJURISDICTIONSDONOT ALLOW EXCLUSIONOF THEIMPLIEDWARRANTIES, SO

THEABOVE EXCLUSION MAYNOT APPLY. UNDERNO CIRCUMSTANCES INCLUDING NEGLIGENCE,SHALL

ISKRAEMECO,THEIR DIRECTORS, OFFICERS, EMPLOYEESOR AGENTSBE LIABLE FOR ANYINCIDENTAL,

SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FORLOSS OFBUSINESS, LOSSOF

PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, ETC.)ARISING OUT OF THE USE

OR INABILITYTOUSETHEPRODUCT ORITS DOCUMENTATION, EVEN IF ISKRAEMECOOR AN

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DAMAGES. SOME JURISDICTIONS DO NOT ALLOW LIMITATIONOREXCLUSION OF LIABILITYFOR

INCIDENTAL OR CONSEQUENTIAL DAMAGES OR ALLOW EXCLUSIONORLIMITATION OFLIABILITYONLY

FORNEGLIGENCE, BUT NOT FORGROSS NEGLIGENCEORATTEMPT, SOTHISLIMITATION MAYNOT

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OF ACTION(WHETHERIN CONTRACT,TORT,INCLUDING NEGLIGENCE,OROTHERWISE) EXCEEDTHE

AMOUNT PAIDFORTHE PRODUCTAND ITSDOCUMENTATION.

V2.00 –English ii/vii INTRODUCTION

MT880

Installation and maintenance manual

MT880-D2

3x110/190 V ... 3x240/415 V, 5(120) A

MT880-T1

3x57,7/100 V ... 3x290/500 V, 2,5(20) A

Three-phase multi-function four-quadrant electronic meter with

three measuring systems

Meter installation procedure

RECOMMENDATION

General

Consider valid safety regulations; Voltage on Feed-through and auxiliary terminals can be

lethal!

Meter installation must be performed according to corresponding legislation and safety

directives.

Meter installation may be performed by authorized personnel only.

In case of any problem, use this Installation and maintenance manual, the MT880 User

manual and contact the authorized ISKRAEMECO support.

READ CAREFULLY AND STRICTLY FOLLOW THE SAFETY INSTRUCTIONS

(SEE CHAPTER 1).

V2.00 –English iii/vii INTRODUCTION

MT880

Installation and maintenance manual

i. About the Installation and maintenance manual

On the Installation and maintenance manual are written installation procedures for MT880 meters, intended

for technically qualified personnel, responsible for electrical energy measurements.

The Installation and maintenance manual provides you all necessary information for safe installation and

maintenance of MT880 meters.

ii. Definitions, Acronyms and Abbreviations

Ampere

dBm

Decibel relative to one milliwatt

Current transformer

Direct current

DIN

German Institute for Standardization (orig. Deutsches Institut für Normung)

EDGE

Enhanced Data rates for GSM Evolution

Fatal Fault

GND

Ground

GPRS

General Packet Radio Service

GSM

Global System for Mobile Communications

HSDPA

High-Speed Downlink Packet Access

Hertz

IEC

International Electrotechnical Commission

Identification

Infrared

kWh

kilo Watt-hours

LCD

Liquid Crystal Display

LED

Light Emitting Diode

milli Ampere

Neutral

Newton metre

Non-volatile

OBIS

OBject Identification System

PDP

Packet Data Protocol, a packet transfer protocol used in wireless GPRS/HSDPA networks.

PPE

Personal Protection Equipment

RAM

Random Access Memory

Radio frequencies

RTC

Real Time Clock

SIM

Subscriber Identification Module

SMA

SMA (SubMiniature version A) connector - type of Coaxial RF antenna connector

Signal Quality

UMTS

Universal Mobile Telecommunications System

Volt

Vac

Volts Alternating Current

Vdc

Volts Direct Current

Voltage transformer

WEEE

Waste Electrical and Electronic Equipment

V2.00 –English iv/vii INTRODUCTION

MT880

Installation and maintenance manual

iii.Reference documents

MT880 –User manual

iv.Versioning

Date

Version

Update

25.10.2013

V1.00

First version of document

21.01.2014

V1.03

Note about wrong phase sequence was added (Chapter 0.

Voltage and current indicators per phases).

Chapter 5.1. Errors was added.

27.01.2014

V1.04

At the end of the chapter 3.2. Terminal block –integrated version

Warning note about mandatory termination of unused RS485 meter

interfaces was added.

16.10.2014

V1.10

Chapter 3.4. COP5 cover was added.

In the chapter 4.3. step 8 was added.

24.02.2015

V2.00

Extended voltage range added.

Extended current range added.

V2.00 –English v/vii INTRODUCTION

MT880

Installation and maintenance manual

TABLE OF CONTENTS

I. ABOUT THE INSTALLATION AND MAINTENANCE MANUAL......................................................... III

II. DEFINITIONS, ACRONYMS AND ABBREVIATIONS......................................................................... III

III. REFERENCE DOCUMENTS ................................................................................................................IV

IV. VERSIONING ........................................................................................................................................IV

TABLE OF CONTENTS....................................................................................................................................V

INDEX OF FIGURES.......................................................................................................................................VII

INDEX OF TABLES ........................................................................................................................................VII

1. SAFETY INFORMATION ....................................................................................................................... 1

1.1. Responsibilities ................................................................................................................................... 1

1.2. Safety instructions............................................................................................................................... 2

1.2.1. Handling and mounting.............................................................................................................. 2

1.2.2. Meter installation procedure ...................................................................................................... 3

1.2.3. Meter maintenance.................................................................................................................... 7

2. METER TECHNICAL INFORMATION................................................................................................... 8

2.1. External and fixing dimensions ........................................................................................................... 8

2.1.1. Meter dimensions ...................................................................................................................... 8

2.2. Name plate.......................................................................................................................................... 9

2.2.1. Meter type designation ............................................................................................................ 11

2.2.2. Communication module designation ....................................................................................... 12

2.3. Connection diagrams ........................................................................................................................ 13

2.4. Voltage and current connection ........................................................................................................ 16

2.5. External power supply....................................................................................................................... 16

3. METER DESCRIPTION........................................................................................................................ 17

3.1. Terminal block –modular version..................................................................................................... 18

3.1.1. Terminal designation ............................................................................................................... 19

3.1.2. Current (1-3, 4-6, 7-9) and voltage terminals (2,5,8 and 11 as Neutral) ................................. 20

3.1.3. Inputs, Outputs and 5A bistable relay...................................................................................... 20

3.1.4. Additional RS232 or RS485 terminals..................................................................................... 20

3.1.5. Communication module inserting/removing ............................................................................ 21

3.1.6. Inserting/removing SIM card.................................................................................................... 22

3.1.7. Antenna type............................................................................................................................ 23

3.2. Terminal block –integrated version.................................................................................................. 24

3.3. Terminal block of direct connected meter D2 ................................................................................... 24

3.4. COP5 cover....................................................................................................................................... 26

3.5. Label for CT/VT ratio, manual billing reset button............................................................................. 27

3.6. LCD display....................................................................................................................................... 28

3.6.1. Alphanumeric filed 1 ................................................................................................................ 28

3.6.2. Alphanumeric filed 1 ................................................................................................................ 28

3.6.3. Energy flow direction indicator................................................................................................. 28

3.6.4. Voltage and current indicators per phases.............................................................................. 29

3.6.5. Notification field........................................................................................................................ 29

3.6.5.1. Modem data transfer............................................................................................................ 29

3.6.5.2. State of the load control relay.............................................................................................. 30

3.6.5.3. Battery status....................................................................................................................... 30

3.6.5.4. Alarm indicator..................................................................................................................... 30

3.6.5.5. GSM signal status................................................................................................................ 30

3.6.5.6. Load control indicator .......................................................................................................... 31

3.6.5.7. Authentication/decryption failure indicator........................................................................... 31

3.6.6. Physical unit field of the currently displayed data.................................................................... 31

3.6.7. Cursors .................................................................................................................................... 32

4. METER INSTALLATION...................................................................................................................... 34

4.1. Fixing meter on the surface............................................................................................................... 34

4.2. Preparing of cables ........................................................................................................................... 35

4.2.1. Power (main) cables................................................................................................................ 35

4.2.2. Auxiliary voltage terminals, external power supply and additional RS232/RS485 terminals .. 36

4.2.3. Input, outputs, 5A relay terminals and terminals on communication module.......................... 36

4.3. Wiring of meters................................................................................................................................ 36

V2.00 –English vi/vii INTRODUCTION

MT880

Installation and maintenance manual

5. CHECKING METER FUNCTIONS....................................................................................................... 37

5.1. Errors................................................................................................................................................. 37

5.1.1. Errors classified by severity and required actions................................................................... 37

5.1.2. Description of errors and required actions............................................................................... 38

6. METER OPERATION MONITORING .................................................................................................. 40

V2.00 –English vii/vii INTRODUCTION

MT880

Installation and maintenance manual

INDEX OF FIGURES

Figure 1: Overall and fixing dimensions of MT880 meter....................................................................................................8

Figure 2: Name plate of modular version MT880 meter (MID) ............................................................................................9

Figure 3: Name plate of modular version MT880 meter (IEC)...........................................................................................10

Figure 4: Meter type designation on the name plate of MT880.........................................................................................10

Figure 5: Communication module designation on the name plate.....................................................................................12

Figure 6: 3-phase 3-wire and 3-phase 4-wire connection..................................................................................................13

Figure 7: Meter connection diagram –CT, CT/VT connection of the meter in 3-phase 4-wire system..............................13

Figure 8: 3-phase 3-wire indirect external Aaron connection diagram ..............................................................................13

Figure 9: 3-phase 4-wire connection diagram for direct connected meter.........................................................................14

Figure 10: 3 system meter, programmed and connected as two system meter ................................................................14

Figure 11: 3-phase 3-wire two- system connection diagram for indirect connected meters..............................................14

Figure 12: Meter settings for 3-phase 3-wire two- system connection ..............................................................................15

Figure 13: Meter nominal voltage settings.........................................................................................................................16

Figure 14: MT880..............................................................................................................................................................17

Figure 15: Terminal block –modular version ....................................................................................................................18

Figure 16: Designation of terminals...................................................................................................................................19

Figure 17: Location of terminals........................................................................................................................................19

Figure 18: Combi Pozidriv + Slot type of screw.................................................................................................................20

Figure 19: Communication module ...................................................................................................................................21

Figure 20: Removing of communication module...............................................................................................................21

Figure 21: Blind module box..............................................................................................................................................21

Figure 22: Inserting of communication module..................................................................................................................22

Figure 23: Inserting SIM card............................................................................................................................................22

Figure 24: GSM SMA antenna connector..........................................................................................................................23

Figure 25: Types of antennas............................................................................................................................................23

Figure 26: Terminal block-integrated version....................................................................................................................24

Figure 27: Meter terminal designation for integrated version ............................................................................................24

Figure 28: UI splitter..........................................................................................................................................................24

Figure 29: Holes for separating voltage and current circuits .............................................................................................25

Figure 30: Inserting UI splitter into opened holes..............................................................................................................25

Figure 31: COP5 cover......................................................................................................................................................26

Figure 32: Fitted and sealed COP5 cover on the MT880 meter........................................................................................26

Figure 33: Label for CT/VT ratio........................................................................................................................................27

Figure 34: Fixing of Label for CT/VT ratio .........................................................................................................................27

Figure 35: Manual billing reset button ...............................................................................................................................27

Figure 36: All segments of LCD display ............................................................................................................................28

Figure 37: Notification field on display...............................................................................................................................29

Figure 38: Antenna sign....................................................................................................................................................31

Figure 39: Communication module CM-v-3 without SIM card...........................................................................................31

Figure 40: Example of flags and labels on the front plate..................................................................................................33

Figure 41: Connection diagram inside of the terminal cover .............................................................................................34

Figure 42: Hanger of MT880 .............................................................................................................................................34

Figure 43: Proper prepared cables....................................................................................................................................35

Figure 44: Cables preparation for CT and direct connected meters..................................................................................35

INDEX OF TABLES

Table 1: Explanation of meter type designation ................................................................................................................11

Table 2: Explanation of communication module designation.............................................................................................12

Table 3: Parameters of terminals......................................................................................................................................20

Table 4: Additional terminals designation of equipped meter with RS232 or RS485.........................................................20

Table 5: Battery status ......................................................................................................................................................30

Table 6: Information about meter registration status.........................................................................................................30

Table 7: The strength of received GSM signal ..................................................................................................................31

Table 8: Definition and explanation of available display cursors.......................................................................................32

V2.00 –English 1/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

1. SAFETY INFORMATION

Safety information used in this Installation and maintenance manual is described with the following symbols

and pictograms:

DANGER: for a possibly dangerous situation, which could result in severe physical injury

or fatality –attention to a high risk hazards.

WARNING: attention to a medium risk hazards.

CAUTION: for a possibly dangerous situation, which could result in minor physical injury

or material damage - attention to a low risk hazards.

Operating instruction: for general details and other useful information.

All safety information in this Installation and maintenance manual describes the type and source of danger; it

is possible consequences and measures to avoid the danger.

1.1. Responsibilities

The owner of the meter is responsible to assure that all authorized persons who work with the meter read

and understand the parts of the User manual and Installation and maintenance manual that explains the safe

handling with the meter.

The personnel must be sufficiently qualified for the work that will be performed. The installation personnel

must possess the required electrical knowledge and skills, and must be authorised by the utility to perform

the installation procedure.

The personnel must strictly follow the safety regulations and operating instructions, written in the individual

chapters in this Installation and maintenance manual and the User Manual.

The owner of the meter responds specially for the protection of the persons, for prevention of material

damage and for training of personnel.

V2.00 –English 2/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

1.2. Safety instructions

1.2.1. Handling and mounting

At the beginning of installation at the metering point, the meter should be carefully taken out of the box

where it was packed. This should prevent the meter from falling as well as any other external or internal

damage to the device and personal injuries. Should such an incident occur despite all precautions the meter

may not be installed at the metering point as such damage may result in different hazards. In such case, the

meter needs to be sent back to the manufacturer for examination and testing.

CAUTION: The edges of the seals, sealing wires as well as some edges under (removed) terminal cover are

sharp!

CAUTION: The temperature of the terminal block of the connected and operating meter may rise; therefore

the temperature of the terminal cover may rise as well.

DANGER: In case of any damage inside the meter (fire, explosion...) do not open the meter.

CAUTION: The meter may be used only for the purpose of measurement for which it was produced.

Any misuse of the meter will lead to potential hazards.

WARNING: Safety measures should be observed at all times. Do not break the seals or open the meter at

any time!

It must be consulted in all cases where symbol is marked in order to find out the nature of the

potential hazards and any actions which have to be taken to avoid them.

The meter installation procedure is described in this Installation and maintenance manual. For safety

reasons the following instructions should be followed.

See the complete User manual for detailed technical features of MT880 meter and its intended use.

V2.00 –English 3/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

Only a properly connected meter can measure correctly! Every connection error could result in a

financial loss for the power company!

1.2.2. Meter installation procedure

DANGER: The MT880 electricity meter is a device connected into the electricity network. Any

unauthorized manipulation of the device is dangerous for life and prohibited according to the

applicable legislation. Any attempt to damage the seals as well as any unauthorized opening of the

terminal or meter cover is strictly forbidden.

Installation companies shall implement a training policy that ensures that all installers are adequately trained,

understand risk and safety issues and possess the relevant skills before they commence operational duties.

The installer will need to recognise and understand different metering installations, meter types and various

equipment associated with those installations applicable to the successful installation of the electricity meter.

The installer must consult and comply with local regulations and read the installation instructions

written in this Installation and maintenance manual before installation.

This Installation and maintenance manual provides the instructions for installing MT880 meters. The

document provides a short overview of the meter, details of device installation and set-up, installation

considerations, and health and safety considerations.

The installer will be considered as a public face by both the power company and its customers. The installer

shall adopt the highest standards of behaviour and be respectful to clients and members of the public.

Before beginning of the installation procedure, check if the metering point is correctly prepared for meter

installation. The metering point must always be left clean and in order.

The work location shall be defined and clearly marked. Adequate working space as well as means of access

and lighting shall be provided at all parts of an electrical installation on, with, or near which any work activity

is to be carried out.

Where it is necessary, safe access to the work location shall be clearly marked.

The metering point must not be exposed to running water or fire.

Meter installation may not be performed by unauthorised and untrained personnel. Such persons are not

allowed to cut the seals and open the terminal or meter cover as contact with the live parts of the meter is

dangerous for life.

Opening the terminal or meter cover is dangerous for life because there are live parts inside.

Installation personnel must possess the required electrical knowledge and skills, and must be authorised by

the utility to perform the installation procedure.

The installer is obligated to perform the installation procedure in accordance with the national legislation and

internal norms of the utility.

National legislation can set out the minimum age and the competence criteria for installers. In case there are

no national requirements defined, the following criteria shall be used by assessing the competence of

installers: knowledge of electricity, experiences on electrical work, understanding of the installation

V2.00 –English 4/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

procedures, practical experience of that work, understanding the hazards which can arise during the work

and the precautions to be observed, ability to recognize at all times whether it is safe to continue working.

According to the basic principles, either the nominated person in control of the electrical installation or the

nominated person in control of the work activity shall ensure that specific and detailed instructions are given

to the personnel carrying out the work before starting and on completion of the work.

Before starting work, the nominated person in control of the work activity shall give notification to the

nominated person in control of the electrical installation, of the nature, place and consequences to the

electrical installation of the intended work.

CAUTION: The installer is expected to fully understand the risks and safety issues involved in

electrical installations. The installer shall be aware at all times of the potential hazard of electrical

shock and shall exercise due caution in completing the task!

Tools, equipment and devices shall comply with the requirements of relevant National or International

Standards where these exist. Tools, equipment and devices shall be used in accordance with the

instructions and/or guidance provided by the manufacturer or supplier.

Any tools, equipment and devices provided for the purpose of safe operation of, or work on, with, or near

electrical installations shall be suitable for that use, be maintained and be properly used.

Personnel shall wear clothing suitable for the locations and conditions where they are working. This could

include the use of close-fitting clothing or additional PPE (personal protective equipment).

CAUTION: The installer must be correctly equipped with personal protection equipment (PPE) and

use the appropriate tools at all times during the installation.

Working procedures are divided into three different procedures: dead working, live working, and working in

the vicinity of live parts. All these procedures are based on the use of protective measures against electric

shock and/or the effects of short-circuits and arcing.

The installer must be informed if the national legislation permits the work on the installation under

voltage –live work, and must follow the rules of legislation.

Depending on the kind of work, the personnel working in such conditions shall be instructed or

skilled. Live working requires the use of specific procedures. Instructions shall be given how to

maintain tools, equipment and devices in good working order and how to verify them before working.

This subclause deals with the essential requirements (“the five safety or golden rules”) for ensuring that the

electrical installation at the work location is dead and secure for the duration of the work.

This shall require clear identification of the work location. After the respective electrical installations have

been identified, the following five essential requirements shall be undertaken in the specified order unless

there are essential reasons for doing otherwise: disconnect completely (1.), secure against re-connection

(2.), verify that the installation is dead (3.), carry out earthing and short-circuiting (4.) and provide protection

against adjacent live parts (5.).

V2.00 –English 5/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

CAUTION: Do not attempt to install the meter before you have isolated the installation site from the

network!

DANGER: The relevant preliminary fuses must be removed before making any modifications to the

installation, and kept safe until completing the work to prevent the unnoticed reinsertion.

DANGER: Secondary circuit of current transformer must not be opened when current is flowing in the

primary circuit. This would produce a dangerous voltage of several thousand volts at the terminals and the

insulation of the transformer would be destroyed.

DANGER: Connecting the meter into the network under voltage is dangerous for life so the conductors at the

metering point must not be connected to any voltage source during the connection procedure. The meter

connection procedure may only be performed by well-trained and adequately authorized personnel.

CAUTION: Only one wire or ferrule may be connected in one terminal. Otherwise, the terminal could be

damaged or the contact could not be made properly.

CAUTION: Do not use those types of cable, which are not prescribed for the installation site and the power

requirements!

DANGER: The insulation of the connecting cable must extend over the whole visible part of the cable. There

must be no further bare part of the cable visible above the terminal edge. Touching live parts is dangerous

for life. The stripped part of the connecting wire should be shortened if necessary.

CAUTION: At the end of installation at the metering point no cable should stay unconnected or hanging

freely from the metering point.

The meter has to be mounted on a smooth vertical surface and fixed at 2 or 3 points with screws using the

proper torque (the meter has two attachment holes and, optionally, a top hanger).

V2.00 –English 6/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

The meter is intended to be mounted at an indoor metering point, in a meter cabinet, secured against the

undesired access of unauthorized persons. Only scroll push button may be accessible from the outside. Do

not expose meter surface to very high temperatures even though the surface is made of non-flammable

plastics to prevent fire.

Electrical connection: mounting cables must be properly dimensioned and of proper shape. They must be

mounted using the proper torque. The meter should be connected according to the meter connection

diagram that is attached to the inner side of the meter terminal cover. Screws on the current terminal must be

tightened to proper torque.

CAUTION: If it is possible to install the meter without isolation from the network, i.e. on live network, then

appropriate instructions and safety warnings shall be provided.

CAUTION: Specific aspects and safety hazards related to external voltage and current transformers,

auxiliary supplies and local generation shall be covered.

DANGER: The preliminary fuses and/or voltage arresters must be re-inserted before commissioning and

functional check of the meter.

Seals on the meter have to be checked at the end of the installation procedure so that the final customer

cannot come into contact with live parts of the meter.

DANGER: If the terminal cover is not screwed tight, there exists a danger of contact with the connection

terminals. Contact with live parts of the meter is dangerous for life.

CAUTION: For safety reasons, place the terminal cover immediately after the installation procedure and fix it

with fixing screws!

DANGER: Switch on the power. Beware of the risk of electric shock at all times!

The functional check requires voltage to be applied and load applied to all phases. Determine first the energy

flow direction.

If no main voltage is present, commissioning and functional check must be performed at a later date.

V2.00 –English 7/40 1. SAFETY INFORMATION

MT880

Installation and maintenance manual

1.2.3. Meter maintenance

No maintenance is required during the meter’s life-time. The implemented metering technique, built-in

components and manufacturing procedures ensure high long-term stability of meters. Therefore no

recalibration is required during entire meters life-time.

In case the service of the meter is needed, the requirements from the meter installation procedure

must be observed and followed.

Cleaning of the meter is allowed only with a soft dry cloth. Cleaning is allowed only in upper part of the meter

–in the region of the LCD. Cleaning is forbidden in the region of terminal cover, where cables are connected

to the meter. Cleaning can be performed only by the personnel responsible for meter maintenance.

CAUTION: Never clean soiled meters under running water or with high pressure devices. Penetrating

water can cause short circuits. A damp cleaning cloth is sufficient to remove normal dirt such as

dust. If the meter is more heavily soiled, it should be dismounted and sent to the responsible service

or repair centre.

Visible signs of fraud attempt (mechanical damages, presence of a liquid, etc.) must be regularly checked.

The quality of seals and the state of the terminals and connecting cables must be regularly checked.

If there exists a suspicion of incorrect operation of the meter, the local utility must be informed immediately.

DANGER: Breaking the seals and removing the terminal cover or meter cover will lead to potential

hazards because there are live electrical parts inside.

After the end of the meter’s lifetime, the meter should be treated according to the Waste Electric and

Electronic (WEEE) Directive!

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MT880

Installation and maintenance manual

2. METER TECHNICAL INFORMATION

2.1. External and fixing dimensions

Meter and fixing dimensions comply with the DIN 43857 standard.

IP protection level: IP54

Mass:

MT880 –modular version: approx. 1,9 kg

MT880 –integrated version: approx. 1,7 kg

2.1.1. Meter dimensions

Figure 1: Overall and fixing dimensions of MT880 meter

V2.00 –English 9/40 2. METER TECHNICAL INFORMATION

MT880

Installation and maintenance manual

2.2. Name plate

Basic data and type designation of the meter can be found on a name plate. (See Figure 2, Figure 3 and

Figure 4.)

Legend of Symbols and Markings

accuracy class 0,5

CE (Conformité Européenne) mark

3-phase 4-wire connection

year of approval

protection class IEC 62052-11

code of approval body

Figure 2: Name plate of modular version MT880 meter (MID)

meter connection type

meter type designation

nominal

frequency

transition,

nominal and

max. current

nominal

voltage

external power supply voltage

software package

2D bar code

(meter serial number

or customer specified)

meter serial

number and

code

registers

legend

V2.00 –English 10/40 2. METER TECHNICAL INFORMATION

MT880

Installation and maintenance manual

Legend of Symbols and Markings

3-phase 4-wire connection

Protection class IEC 62052-11

CE (Conformité Européenne) mark

Figure 3: Name plate of modular version MT880 meter (IEC)

Figure 4: Meter type designation on the name plate of MT880

meter connection type

meter type designation

nominal

frequency

transition,

nominal and

max. current

nominal

voltage

external power

supply voltage

software package

accuracy

class

2D bar code

(meter serial number

or customer specified)

meter serial

number and

code

registers

legend

V2.00 –English 11/40 2. METER TECHNICAL INFORMATION

MT880

Installation and maintenance manual

2.2.1. Meter type designation

Meter Type designation is written on the name plate. (See Figure 4.)

Meter type designation shows features related to the hardware equipment and are explained in Table 1.

MT880–XXAnmRnmSnm–EnVn2LnmB11–MxK0x–Y-Hxx

MT880 three-phase multi-function four-quadrant electronic meter with three measuring systems

XX type of connection

D2 direct connected meter

T1 transformer connected meter

Aactive energy

n = 3 class 0.5S, C

n = 4 class 1, B

m = 1 one energy flow direction

m = 2 two energy flow directions

Rreactive energy

n = 4calibrated to 1%

n = 5 class 2 (IEC 62053 – 23)

m = 1 reactive energy flow in one direction (Q+)

m = 2 reactive energy flow in two directions (Q+, Q-)

m = 3 inductive reactive energy - reception, capacitive reactive energy transmission (Q1 and Q4)

m = 4 inductive reactive energy in two directions (Q1 in Q3)

m = 5 measurement of reactive energy in four quadrants (Q1, Q2, Q3 and Q4)

m = 6 measurement of reactive energy in four quadrants, reception and transmission (Q1, Q2, Q3, Q4 Q+ and Q-)

Sapparent energy

n = 4 adjusted to 1%

n = 5adjusted to 2%

m = 3 apparent energy → U x I

Eexternal power supply

n = 1 power supply of the whole meter

n = 2 no power supply via the optical probe (reading if measuring voltages are absent)

Vcontrol inputs

n = 1..5a number of inputs

2control voltage is phase voltage

LOptoMOS relay outputs

n = 1..8 a number of outputs

m = 1 OptoMOS relay output

B11 5A bistable relay

Madditional device

x = 2

Super capacitor back up for RTC and intrusions detection

(meter and teminal cover openning, presence of high magnetic field)

x = 3

Li battery back up for RTC and intrusions detection

(meter and teminal cover openning, presence of high magnetic field)

Kcommunication interface

0meter interface one: IR – optical interface

x = 2 meter interface two: RS-232 or

x = 3 meter interface two: RS-485

Y meter version

Mmodular

Iintegrated

hardware version *

xx versioning number defines specific version of HW (numbers go from 01 to 99)

*The type designation of first version of HW at specific meter type does not contain this index. Each HW that differs from the initial one gets its own index.