MTE's stationary

Meter Test Systems

System Overview

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The individual system components of a MTEmeter test system such as a fully electronicvoltage and current power source, a referencemeter, an error evaluation system, as well as ameter test rack or gantry system are modularydeveloped and can be combined in any order.This modular design gives flexibility and enablesMTE to provide the optimal customer orientatedsolution for each single or three phase meter testsystem the customer requires to meet thechanging needs of the metering world.Innovative, economical, modular meter testsystems enable the user to measure and checkmeters with high precision.

Meter test systems are available for testing ofsingle and three phase meters with or withoutclosed I-P links.Meter test systems are available with fixed meterracks or with gantries and moveable trolleys tofulfill different requirements of production and testcapacities.MTE Meter test systems are controlled byCAMCAL for WINDOWS an easy to use andintuitive software package which is available indifferent languages.

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Configuration of a standard meter test system MTE-S

ST

E 1

0V

oltage a

nd c

urr

ent

sourc

e S

PE

120.3

UL1-UL3

I -IL1 L3

System MeasuringModules SMM 400+

Tariff circuit switching

Scanning HeadsSH 2003

Device Under TestDUT

Referencepulses to SMMs

ReferenceStandard SRS 121.3

RS232 ETHERNET

RS 232

RS 232

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Electronic power sources

SPE System, three phase power source

The SPE System is an electronic voltage- andcurrent power source and a meter supply unit(phantom load) for testing electricity meters orfor testing other devices which use current orvoltage.

The cabinet is equipped with the followingcomponents:

Control unit STE 10

Power source SPE 120.3 with digital voltageand current amplifier

Digital electronic reference meter SRS 121.3or other types (Option)

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Voltage and current ranges:Voltage: 30 V up to 300 VCurrent: 1 mA up to 120 A or

1 mA up to 200 A

Output power: 300 VAor 600 VAper phase

Power efficiency: > 85 %

PSP System, single up to three phasepower sources

The PSP System is an electronic voltage- andcurrent power source and a meter supply unit(phantom load) for testing electricity meters orfor testing other devices which use current orvoltage.

The cabinet is equipped with the followingcomponents:

Control unit STE 10

One up to three power sources PSP 10 withdigital voltage and current amplifier

Digital electronic reference meter SRS 121.3or other types (Option)

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Voltage and current ranges:Voltage: 30 V up to 300 VCurrent: 1 mA up to 120 A

Output power per phase:Voltage: 800 VACurrent: 1200 VA

Power efficiency: > 85 %

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Electronic power sources

ZVE System, single up to three phase power sources

The ZVE Power Source was specially designed for use as an electro technical current and voltagegenerator in Meter Test Systems and also in other automatic test systems.

The power source creates the current and voltages - the phantom load - required for measuring themeters. The network as generated by the ZVE system is completely distinct from that of the mainspower supply. The generated values are, consequently, practically independent of the quality of thepublic power supply.

The ZVE system is composed, in general terms, of the following principal units

One up to three Voltage power sources PSU 10

One up to three Current power sources PSI 10

Voltage and current ranges:Voltage: 30 V up to 300 VCurrent: 1 mA up to 120 A or

1 mA up to 200 A

Output power per phase:Voltage: 1000 VA / 2000 VA / 4000 VACurrent: 1000 VA / 2000 VA / 4000 VA

Power efficiency: > 85 %

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Control unit STE 10

Digital electronic reference meter SRS 121.3 or other types (Option)

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Reference Standards and Comparator

Stationary Reference Standards

The electronic system reference standards in0.05 % or 0.02 % accuracy, are precisionmeasurement units for all AC values, which areused in the measurement of energy. The widemeasurement range and the high precision arethe main characteristics of the referencestandards.

available in two versions:Current range: 1 mA ... 120 A or 1 mA ... 200 A

Current range: 1 mA ... 120 A

Current range: 1 mA ... 200 A

SRS 121.3, accuracy 0.05 %

SRS 400.3, accuracy 0.02 %

SRS 200.3, accuracy 0.02 %

K2006 Comparator

The K2006 is a high accuracy comparator ofaccuracy class 0.01, especially suitable for usein metrological institutes and high precisionmeasuring laboratories.

Its ability to compare directly to an external DCreference allows easy traceability to nationalstandards.

Comparators are regularly used for checking ofreference standard meters, for the calibration ofprecision current and voltage sources and forthe verification of electrical standard measure-ments and electricity test systems.

PRS 400.3 Portable Reference Standard

The PRS 400.3 reference standard of the modu-lar system is based on the well-known digital mea-surement value retrieval, fast analogue-digitalconversion and calculation of the values usingfast signal processors. As opposed to the past,reference standards are not only used as stan-dards for meter testing in a stationary meter testinstallation, but are also now predominantly usedin the field for the measurement of all mainparameters.

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Error evaluation systems

The modular Evaluation System, testing of emitting

contacts and communication to tariff device unitsto the meter under test.

Four different versions covering customer´srequirements are available:

with SMM 400 bus-master without error display

with SMM 400bus-master and SMM 400 error calculatormodule

with SMM 400+bus-master and SMM 400+ system evaluationmodule

with SMM 400Bus-Master, SMM 400+ system evaluationmodule and addition IN/OUT module for 8 in-and 8 outputs and or COMM communicationmodule

Meter error measurement with scanning head

Meter error measurement of emitting contacts

Impulse generator

Graphic meter error display

Reset button

Communication interfaces RS 232, RS 485,CL, M-Bus and ETHERNET

module for 8 in- and 8 pulse outputsand 10-30 VDC supply for S0 inputs

module with ETHERNET, M-Bus andRS 485 interfaces

SMM 400performs error calculation

Meter error calculator

Basic meter error calculator

Standard evaluation system

Extended evaluation system

Functions display and interfaces

Options

IN/OUT

COMM

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Rearsideof STE 10

RS232

Rearsideof SRS 121.3

Personal Computer

Power Supply +24 V

Pos. 1...n Pos. 1...n Pos. 1...n

SMM-BusMaster

ETHERNET

fref

+1

2V

fre

f

Extended evaluation system

Meter error calculator

Basic meter error calculator

Standard evaluation system

RS232

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Error evaluation systems

SMM 400 Bus-Master provides the interfacebetween personal computer (via ETHERNET)and the system modules over RS 485-Ringbus.

The SMM 400 Bus-Master is equipped with anerror calculator for 10 meter position and 10direct inputs for scanning head pluses.

SMM 400+ Meter Evaluation Module with, reset-button and 2

scanning head pulse inputs is the perfect solutionto test modern meters.

The sockets are used for:

Socket : IN – and OUT of fast and slow pulses

Socket D: Serial interface RS 232 and 20mA -current loop interface (CS)

Socket IR: Serial infrared interface e.g. forreadout of tariff devices with opticalcommunication head OKK.

fullgraphic OLED display

SMM 400 is a one channel error calculator withone input on the rear side for scanning headpulse from SH 2003 or SH 11. A reset-buttonallows a restart of the measurement. The metererror is shown on full graphic OLED display.

The module is equipped with thefollowing In- / Outputs:

8 Pulse inputs (IN) for testing of meter emittingcontacts

8 Plus outputs (OUT) send pre-defined pulseto the meter under test

The module is equipped with thefollowing interfaces:

ETHERNET

M-Bus interface

RS 485 interface

IN/OUT

COMM

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Meter test racks

The meter test racks are made of robust aluminimum profiles. The rack consists of a working table,equipped with attachments for single- or three phase meters. Each meter position is equipped with anerror evaluation system, safety sockets for the connection of the measuring voltage and lateral movablescanning head carriages with depth and height adjustments for the scanning heads.

Thanks to the modular design structure of the meter test racks, special versions can be adapted easilywith regard to the number of measurement positions, mechanical arrangements and technicalspecifications according to customer needs.

The picture shows a meter test rack with 10 measurement positions. By request different options can beoffered to the meter test system:

Several quick connection devices according to IEC- or ANSI standards are available, which allow fastsuspension and connection of meters

Relay outputs for tariff control

Hand held terminal with or without barcode reader

Tariff readout system, etc.

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Meter test racks

The picture shows a meter test rack for 5 ANSI meters with quick connection devices QCD Form S andisolation current transformers ICT 2.3

The picture shows a meter test rack with total 20 measurement positions in one row of ten on the front andone row of ten on the rear side.

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The suspension rack for the isolation can accomodate up to 5 meters. The devices under test areconnected via quick connetion devices on a conductive aluminium plate by means of a tilting supportframe, the status of the device under test can be determined.

Gantry systems are generally used, if test and calibration of single and three phase meters with a highthroughput are required. Whilst the fully automatic test of the meters with a trolley in the gantry system isrunning , a second trolley can be used in parallel to perform the assembly, preheating and if requiredmeter isolation test.

Gantry Systems and Isolation Test

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VXL Landis & Gyr Ltd., Calcutta,India, Six meter test systems

Each of the six test system consists of anelectronic power source type ZVE with4000 VA output power in voltage andcurrent and each test system consists ofsix meter test racks with 26 positions,providing VXL Landis & Gyr Ltd with atotal capacity of 936 positions for single-phase meters.

ELSTER, Hungary, Meter test systemfor 80 single-phase meters

The meters are mounted on the front andthe back of the trolleys in two rows. Thiscustomized and compact constructionallows testing of 80 single-phase meters intight floor space conditions.

ENEL, Italy, Meter test system forthree-phase meters

The photo shows a customized test systemfor ENEL meters. The test system is dividedinto three sections. In the left section themeters are assembled, in the middlesection the meters are tested. Once testedthey are removed from the test system inthe right section therefore providing acontinuous flow of assembled and testedmeters.

Customized test systems

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Modernization of existing test systems

For customers already using MTE´s testsystems for a long time it is of importance tohave the option to utilize the well knowntechnology also in the future. MTE has takenthis issue serious in providing solutions togradually replace existing systems with moderncomponents.

The example shows a Landis & Gyr test systemETALOGYR 6001 which was modernized inorder to meet the constantly increasing require-ments of meters and meter testing.

Scanning head SH 2003 and scanning head carriage SHC

Isolation current transformer ICT 2.3

Quick connection device EMP 1.3

Error display channel withsystem measuring modules SMM 400+

Electronic power source SPE 120.3and system reference standard SRS 121.3

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Testing of single phase meters with closed IP-links

Test requirements with closed I-P links

If the meters under test do not allow for opening of the I-P links, then there is an unwanted connectionbetween voltage and current path at every meter position.

Because of these connections, the line (input) and load (output) of each current measurement elementare forced to be at the same potential, an effective short-circuit path exists across the current measuringcircuit of every meter under test, causing a large measurement error. It is therefore not possible to testmultiple meters with closed I-P connections on a conventional meter test installation without additionalfacilities. To be able to test these types of meters, galvanic isolation must be provided between thecurrent and voltage circuits of each meter under test. This isolation must ensure that the closed I-P linksin the meters do not cause these unwanted short-circuits and the resultant measurement errors. Withsingle phase meters, galvanic isolation can theoretically be carried out using either voltage or currentisolation transformers.

In this case, a connected I-P link does not cause a short-circuit, as this connection is now made on thesecondary side of the transformer, thus avoiding any direct connection with the other meters in the circuit.

Voltage isolation for testing single-phasemeters

For the testing of multiple single-phase meterswith fixed/closed links between the voltage andcurrent path (I-P links), galvanic isolation must beprovided at each test position.

In practice this is normally done by connecting thevoltage circuit of every meter under test, througha high accuracy voltage transformer. For costreasons a voltage transformer with severalgalvanically isolated secondary windings is used.

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Un

Reference Standard Meter 1 Meter 2

Sec 1

Sec 2

Sec n

Pri

mary

MSVT

Meter n

Currentsource

Voltagesource

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Testing of three phase meters with closed IP-links

Tariffcircuits

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Sta

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ard

Meter 1 Meter 2 Meter n

ClosedLinks

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UL3

UL2

UL1

IL2

IL1

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120.3

Ipri

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Current Source

Meter under test

Ipri

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Isec

Icomp

IL1-IL3

UL1-UL3

Current isolation for testing of multi-phase meters

The ICT 2.3 three-phase Isolation CurrentTransformer is used on multi position testbenches for testing three-phase meters withclosed links between the current and voltagemeasuring circuits (IP-links). Electronic meterswith closed links are becoming increasinglycommon.

While testing meters with fix closed IP-links,unwanted connections between voltage andcurrent path at each test position will causesignificant accuracy reduction.

In this case transformers in the current circuit arerequired to decouple the voltage from the currentpath.

To achieve complete decoupling the testinstallation needs to be fitted with one currenttransformer per phase for each test position.

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Software package CAMCAL for Windows®

CAMCAL for WINDOWS is a comprehensivesoftware package designed to fulfil therequirements of the modern meter testingenvironment but also provides the flexibility toeasily incorporate future meter testingrequirements.

®This defines the data to be selected orprogrammed plus the dispatching commands,adaptable by the customer, makes the fullyautomatic examination of high-functional metersand tariff devices possible.

CAMCAL for WINDOWS software allows thecontrol of both static and portable meter testequipment, including the recording andevaluation of meter and measurement data.

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CAMCAL for WINDOWS software can be usedthroughout the meter test environment.

Tests can be carried out for simple or highlycomplex meters in accordance with the customerrequirements and national / international test andcalibration regulations (e.g. PTB, IEC,ANSI).

The user interface of the basic version shows allessential information required, therefore makingthe system easily understandable to operators withlimited technical knowledge.

User-friendly operation

Database for meters and test sequences

Fully-automatic test sequences for meter testing

Transparent evaluation and presentation ofresults and statistics

Suitable for use with various hardwarecombinations

Modular system allows the integration ofcustomer specific applications

Operator interface available in severallanguages

The meter type description contains the electricaland functional definitions of meters under test(connection values, constants, registers, ...).

For the tariff device communication, a communi-cation module is assigned to the meter types.

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Advantages of CAMCAL for Windows

Meter type description

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The basic version supports the communicationprotocol in accordance with that described in theIEC 62056-21 Mode C standard. As an additionaloption the communication protocol is preparedaccording to dlms / COSEM.

A test sequence describes the order and content ofthe various test steps in a sequence. For each teststep the desired test quantities (current, voltage,phase angle, frequency, …) are specified.

Test sequence

In addition to the respective test method (e.g. errormeasurement, register tests, …) each checkpointcan be linked with control commands. Controlcommands display for instance instructions to theoperator, switching of tariff relays or dispatching ofcommands e.g. to adjust time, …

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Software package CAMCAL for Windows®

Meter testing

The user allocates to each active measurementposition a meter type and selects a testsequence. Subsequently the user wil lcomfortably be guided through the test. Theactual status of the test and active test point isclearly indicated at all times.

It is possible to display simultaneously the actualtest values and/or results in their own windowsusing large, easily visible fonts.

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Results

fter executing an automatic test sequence allsaved results are available for further dataprocessing, such as creating an individual testreport or export to Excel tables. The results can alsobe viewed and evaluated directly using several sortcriteria in the database.

The CAMCAL Report Generator, enables the userto create and define there own protocol masks(calibration certificates, pass/fail reports, statisticalreports, customer reports etc).

Furthermore the CAMCAL Report Generator hasthe flexibility to add to reports logos, diagrams andfields (e.g. for signatures) etc.

Tariff device communication / dlms

Generation of harmonics

Tariff device testing with pulse transmitter

Error compensation

Generation of ripple control signals

Generation of special test signals and waveforms according toIEC 62052-11

IEC 62053-11/-21/-22

Additional standard functions of the CAMCALfor Windows Software

Optional Software Modules

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Testing of modern meters requires an adaptableand flexible software package. Because of itsmodular design, CAMCAL for Windows coversthis requirement.

CAMCAL for Windows Software meets thefollowing requirements:

Modular extensions of semi-automatic andfully automatic systems are possible withoutextensive software adaptations

Demonstration programmes allow training tobe given before delivery of the test system

Standardized meter type and test sequencedefinitions considerably reduce the need forextensive training and familiarisation

Data export modules support data transfer toother systems

The operator interface is available in manydifferent languages

Password protection is provided for differentuser levels

Import and export function enable the easytransfer of meter types , test sequences, reportprotocol masks etc. between test systems oracross sites or between manufacturers andcustomers for instance

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Scanning heads and scanning head carriages

Scanning head SH 2003

The SH 2003 photoelectric scanning head issuitable for use with both LED impulses fromstatic/electronic meters and also for detecingthe marks on Ferraris/mechanical rotating discmeters, selectable via a switch. Due to its highperformance and robust construction it issuitable for both stationary and portable testsystems.

Scanning head SH 11 with integratedteach function

The SH 11 scanning head was especiallydesigned for scanning of the marks on therotating discs of Ferraris/mechanical meters orsimulated disc marks on LCD displays plus thedetection of light emitting diodes (LED's) ofstatic/electronic meters. The choice of operationwith mechanical or electronic meters is madeby simple rotation of a selection switch. Themanually sensibility set-up for the disc or LCDmarks is not necessary.

The optimal set-up is automatically learned bythe integrated teach function, which can beactivated by the rotary switch or an externalcontrol signal.

Scanning head carriagesSHC 1.2 and SHC 2.2

The SHC range of scanning head carriages hasbeen designed for use with the SH 2003 andSH 11 model scanning heads. The range isuser friendly and offers a high degree offlexibility.

There is a fine setting control, both in depthand height, for each version of the scanninghead. Meters may be scanned from the side bysimple rotation of the fine setting

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Horizontal adjustment and scanning headfixing are built into each individual supportposition

Depth adjustment has also been provided inorder to adapt the scanning head to meters ofdiverse constructional depths

Fast height adjustment by using the direct'press-button' control

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Quick connection devices

Quick connection device QCD

This QCD quick connector may be used withcurrent levels up to 80 A for long period testing,and with up to 100 A for short periods of time.The connector is available in three differentversions, which may be used together withsingle and three phase meters.

The QCD 3 I/U is constructed identically to theQCD 3 I, with the difference that the voltageconnection is assured over a jumping fingercontact system.

Quick connection device QCD Form S

Due to its universal construction the QCD FormS Universal Quick Connection Device may beused for the support and connection ofpractically all types of self contained (directconnected) or transformer operated ANSIsocket meters, including the most used Forms1S, 2S, 3S, 4S, 5S, 6S, 8S, 9S, 12S, 13S, 14S,15S, 16S, 17S.

This QCD Form S Universal Quick ConnectionDevice can be used with current levels up to200 A.

Quick connection device EMP 1.3

The EMP 1.3 Quick Connection Device is usedtogether with Electricity Meter Test Systems, andis especially recommended for situations wherethe time factor is of importance.

Thanks to the universal construction of the EMP1.3 quick connection device, it may be used forthe support and connection of practically all typesof electricity meters.

This EMP 1.3 quick connection device can beused with current levels up to 100 A testing, andeven with the additional high current adapters upto 120A.

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Accessories and Options

Hand Held Terminals

The HT 2010 wireless hand held terminal with anintegrated bar code reader is designed forrecording meter specific data at meter testsystems.

Impulse InterfaceAdapter

The IMP-IF1 interface adapter is suitable tointerface MTE reference standards with metershaving retransmitting contacts, open-collectortransistor outputs or true S0-outputs to allow fulltesting of meters with these types of outputsinterfaces.

OKK optical communication head

The communication to sophisticated electronictariff devices/meters is performed according toIEC61107 Mode C, using an OKK opticalcommunication head.

The OKK is directly connected to thecorresponding interface of the measuring moduleSMM 400.

Accessories for quick connectiondevices

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Adapter to electronic meters for fastconnection of the measuring voltage

Voltage contacts for transformer connectedmeters

Customized meter templates for fastassembly of the quick connection device

High current screw adapter for currents up to120A

Dammstrasse 16 • P.O. box 4544 • 6304 Zug • SwitzerlandPhone +41 (41) 724 24 48 • Fax +41 (41) 724 24 25 • Internet www.mte.ch

MTE Meter Test Equipment AGEdition 01.2011

Subject to alterations

The following MTE brochures are available:

Stationary Meter Test Systems

Comparator: K2006

Portable Reference Standards: PRS 400.3 / CALPORT 300

Portable Working Standards: PWS 3.3 / PWS 2.3 PLUS

Portable Standard Meters: CheckMeter 2.3 / CheckMeter 2.1

Portable Power Sources: PPS 400.3 / PPS 3.3 C CheckSource 2.3

Portable Test Systems: PTS 2.3 C / PTS 3.1 C / PTS 3.3 C / PTS 400.3 / CheckSystem 2.1 / CheckSystem 2.3

Instrument Transformer Tester: PTT 2.1

Transformer Monitoring Systems: HYDROCAL 1001 / HYDROCAL 1002 / HYDROCAL 1003 / HYDROCAL 1005 / HYDROCAL 1008

: Fixed Rack Systems / Gantry-Trolley System / Customized System

Software: CAMCAL for Windows / CALSOFT I / II

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MTE Meter Test Equipment AG

EMH Energie-Messtechnik GmbH

MTE - India Office

EMH Energie-Messtechnik (Beijing) Co. Ltd.

MTE Meter Test Equipment (UK) Ltd

OOO MTE

Dammstrasse 16P.O. box 4544CH-6304 Zug, SwitzerlandPhone: +41 (41) 724 24 48Fax: +41 (41) 724 24 25Internet: www.mte.che-mail: info@mte.ch

Vor dem Hassel 2D-21438 Brackel, GermanyPhone: +49 (4185) 58 57 0Fax: +49 (4185) 58 57 68Internet: www.emh.dee-mail: info@emh.de

115, Navjiwan ViharNew Delhi - 110017, IndiaPhone: +91 (11) 2669 10 17Mobile: +91 (98) 911 12000Fax: +91 (11) 2669 24 91e-mail: vinarora@vsnl.com

Section 305, Building 2, Ke-Ji-YuanNr.1 Shangdi-Si-Jie, Shangdi-Information-Industry-BaseHaidian DistrictBeijing 100 085P.R. ChinaPhone: +86 (10) 629 81 227Mobile: +86 (139) 0 103 6875Fax: +86 (10) 629 88 689e-mail: guo@emh.com.cn

4 Oval ViewWoodley StockportCheshire SK6 1JW, EnglandPhone: +44 (161) 406 9604Fax: +44 (161) 406 9605Internet: www.mte.che-mail: info@mte.uk.net

Phone:Internet: www.meter-test.rue-mail: info@meter-test.ru

Pochtovaja Bolshaja str., 26, bld. 1, office 501105082 Moscow, Russian Federation

+7 (495) 640 07 25