GB - GMC-I Messtechnik GmbH
Contents
1. each one for voltage and current path Lifespan approx 200 hours Battery test by battery test section on the scale Electrical safety Protection class Il per IEC 61010 1 EN 61010 1 VDE 0411 1 Measuring category ominal voltage 300 V Pollution degree 2 Test voltage 3 7 kV per IEC 61010 1 EN 61 010 1 GMC I Messtechnik GmbH 21 Electromagnetic Compatibility EMC Interference Immunity and Emission EN 61326 Mechanical Design Display Moving coil movement Scale length 96 mm Protection type IP 50 per VDE 0470 Partl 1 Dimensions 110 mm x 181 mm x 62 mm Weight approx 0 8 kg 1 The measurement is independent of the position of the selector switch for the voltage ranges Symmetry error of the delta voltage with power factor measurement on three phase sys tems is 0 596 at a maximum The measurement is of informative character only That is why no class accuracy is given The indication is independent of the position of the selector switch for the voltage ranges 6 Maintenance 6 1 Battery and Fuse Replacement Caution Disconnect the meter from the measuring circuits before you open the battery compartment Take care that the A cover is replaced before you operate the meter again Battery Replacement If when testing the battery the pointer no longer reaches the battery test section a the corresponding battery must be replaced Replace the exhausted batter2. g 0 7 Measured result cos p 0 7 Example 2 Meter connection for single phase AC systems via current trans former Switch positions reading scale and read value same as in example 1 But the current path is connected via a current trans former having a ratio of 01 100A 5A 20 Measured result P a c tl 350 1 20 7000 W Example 3 Meter connection for single phase AC systems via current and voltage transformers Switch positions reading scale read value and current transformer same as in example 2 But the voltage path is connected via a volt age transformer having a ratio of U 1000 V 100 V 10 Measured result P a c l U 850 1 20 10 70000 W 14 GMC I Messtechnik GmbH 4 4 Internal consumption of the power meter its influence on the accuracy The MAVOWATT 4 power meter needs a certain amount of energy for the presentation of measured values Due to the internal meter consumption the measured value always includes an error In most cases particularly so when measuring higher power the influence is so small that it can be neglected When measuring smaller power lt 100 W it is recommended to consider the nternal consumption of the power meter by mathematical correction of the measured result Depending upon the connection circuit either the internal consumption of the current path or that of the voltage path enters into the measurement The voltage path is con
3. is a presentation of the wiring diagrams The most important diagrams are also affixed to the rear of the meter Power measurement on DC systems PW l U a cE 10 GMC I Messtechnik GmbH Active power and power factor measurement on Direct connection LI LI N N 13 13 i YYYYY F 1 2 3 0 o OO P W zI U cos p 0 CS Connection via current and voltage transformer L1 N 2 P W zI U cos o SOURS Uy Uy GMC I Messtechnik GmbH Connection via current trai single phase AC systems nsformer I U coso 11 Active power and power factor measurement on three wire three phase systems balanced load Direct connection L1 L2 L3 bd id 12 43 0 0 0 L1 L2 L3 Connection via current transformer Connection via current and voltage transformer L1 L2 L3 K k TERN DII F 1 1 2 3 ig 0 G 0 8 0 6 P W fg coso a CZ l GMC I Messtechnik GmbH Reactive power measurement on three wire three phase systems of balanced load It is easy to determine the reactive power on three wire three phase systems of balanced load Set the function switch to the posi tion To obtain the reactive power multiply the found value pointer deflection x scale factor by the factor of 3 With a connection a
4. the power to be mea sured Caution In systems having a voltage of more than 600 V A measurements must on principle only be made via Y current and voltage transformers The nominal currents and nominal voltages of the meters correspond to those of commercial current transformers with secondary currents of 1 and 5A and the standardized voltage transformers with sec ondary voltages of 100 V or 110 V When using current transformers consider the secondary load Particularly with longer connection leads and with a transformer having a secondary current of 5 A the power loss on the lines is often remarkable Set up the current path mechanically solid and secure it against accidental opening Lay out the cross sections of the leads and the connection points in such a way that they will not heat up unper missibly For currents above 5 A the connections must always be made as screw connections e g with cable lugs but not as plug connections 8 GMC I Messtechnik GmbH Prior to measuring always set the selector switch for the current ranges and that for the voltage ranges to the highest range Make sure that the set nominal values are never exceeded by more than 1 2 times For power measurements on DC and single phase AC systems set the function switch to the zzz position for power measure ments on three wire three phase systems of balanced load to the amp position To measure the power fa
5. MC I Messtechnik GmbH 3 Contents 1 2 3 3 1 3 2 3 3 3 4 4 41 4 2 43 44 45 4 5 1 4 5 2 4 5 3 6 1 Safety precautions eee 5 Application tec mnes 6 Getting Started e ERU 7 Description of the operating controls eene 7 nstalling the batteries aaa 7 1 5 4 11119 187 486 1 5 d SEWER 8 Measurement eee sesesesenentntntntnnnns 8 otes on measurements oeste retenti rene ren teint 8 CORP e tornei CUltTies eee cocci 10 easu red resulls 2 teneo eU Ye n IERI ET 13 nternal consumption of the power meter and its influence on the accuracy 15 Voltage and current measurement ssssseenmnnnnnes 16 Voltage measurement 16 Current measurement 1 Phase sequence indication 17 Specifications 2 2 16 Maintenance aici 22 Battery and Fuse Replacement 595959 22 Repair and Replacement Parts Service Calibration Center and Rental Instrument Service 23 Product Support 24 GMC I Messtechnik GmbH 1 Safety precauti
6. Operating Instructions AGOSSEN METRAWATT MAVOWATT 4 3 348 721 02 Multifunction Power Meter 4 7 09 MAVOWATT 4 GOSSEN METRAWATT wary ros 20 590 Z J 100 Figure 1 GMC I Messtechnik GmbH Operating controls 1 Connection terminals Current F 1 3 oak wh Symbols Voltage 11 2 L2 5 L3 8 Mirror scale Mechnical zero adjuster Selector switch for voltage ranges 50V 100V 250V 500 V Selector switch for current ranges 0 25 1 5 25 Function switch The position of the function switch is marked by symbols Where Meter in OFF position Battery test for the voltage path of the meter Battery test for the current path of the meter Measurement of the active power on a three wire three phase systems balanced load Measurement of the active power on a DC and single phase AC system Measurement of AC voltage Measurement of AC current Measurement of DC voltage Measurement of DC current Measurement of the power factor inductive Measurement of the power factor capacitive Phase sequence indication Danger warning Caution Note documentation Further symbols Indicates EC conformity A This device may not be disposed of with the trash Further informa tion regarding the WEEE mark can be accessed on the Internet at www gossenmetrawatt com by entering the search term WEEE G
7. ccording to the following wiring diagram and a positive indication the measured reactive power is inductive With a negative pointer deflection the measured reactive power is capacitive To obtain a positive indication transpose the connection L1 and L2 on the meter cond L2 to connector L2 5 and cond L3 to connector L1 2 Direct connection L1 L2 L3 b VOY Y Y ov r I KET 2 gt UES o 8 0 var 3 1 U sing Bac Z m 4 3 Measured results To determine the measured active power it is merely required to mul tiply the pointer deflection a with the constant c and eventually with the transformer ratios In any case it applies P W a c Uj Uy GMC I Messtechnik GmbH 13 Example 1 Direct connection of the meter for single phase AC systems Selected nominal current range 5 Selected nominal voltage range 100 V a Function switch in position zzz Reading scale according to table 0 500 Value read off the scale e g 350 Measured result 350 1 350 W b Function switch in position U Reading scale according to table 0 100 Value read off the scale e g 100 Measured result U a cy 100 1 100 V c Function switch in position Reading scale according to table 0 500 Value read off the scale e g 500 Measured result l a c 500 0 01 5A d Function switch in position Cos ind Reading scale according to table COS 9 Value read off the scale e
8. ctor cos set the function switch to cos ind with inductive load with capacitive load to cos The connection circuitries for active power and power factor mea surements cos are identical and are shown later Switch the meter off after the measurement to avoid unnecessary load on the batteries function switch set to position The symbols used in the equations of the connection circuitries have the following meaning Active power in W Reactive power in var Load current of a phase in A Interlinked generator voltage with three phase connection in V Power factor Readout of the pointer deflection on the corresponding instrument scale in W V or A Readout of the pointer deflection on the cos scale Scale factor for power measurement Scale constant for current and voltage measurement Scale constant for current and voltage measurement GMC I Messtechnik GmbH 9 4 2 Connection circuitries Current and voltage input takes place on the meter via connectors which are suited for both plugging banana plugs and as terminals e g cable lugs The current path is run to the two connectors 1 and 3 the voltage path to connectors L1 2 L2 5 and L3 8 For DC current and for single phase AC systems the voltage must be applied to L1 2 and L2 5 for three wire three phase systems with out neutral conductor to L1 2 L2 5 and 1 3 8 Following
9. d AC voltage Nominal Factor c at scale division Nominal Factor c at scale division voltage current d 0 100 0 250 0 500 0 100 0 250 0 500 50 100 250 gt 800 10 When measuring the power factor cos read the measured values off the cos p scale without taking into consideration factor GMC I Messtechnik GmbH 19 Inputs Voltage path Nominal voltage Uy Input resistance R 50 V 100V 250 V 500 V 1 Current path Nominal current ly Input resistance R 0 25A 1A 5A 25A 8 Voltage drop Ay at nominal current 2 1 mV 8 4 mV 42 mV 210 Internal consumption P at nom current 0 0005 VA 0 0084 VA 0 21 VA 5 25 VA Electrical isolation between voltage path and current path by optocoupler test voltage 3 7 kV Overload capacity Permissible continuous overload on all nominal voltage and nominal current ranges 1 2 times the value of the selected nominal voltage and or the selected nominal current Exception 25 A range Measurement 5 min at a maximum interval 5 min Fuse protection The current measuring ranges are protected bya6x32 mm 25 A 500 V 1 5 kA 250 V 10 kA fuse Accuracy Under reference conditions Class 1 5 for power measurement Class 2 5 in all other ranges Class 5 for power factor measurement In the 25 A range 2 time
10. er lt Install two 9 V flat cell batteries 6F22 6LF22 or 6LR61 according to IEC 86 2 in the two compartments Caution Except for the specified 9 V flat cell batteries no other voltage souces must be connected to the battery connection contacts LN The connection contacts must not be connected with each other Replace the cover and screw tighten it 3 3 Mechanical zero check gt Check that the meter is switched off Place the meter in a horizontal position c Check the mechanical zero position of the pointer If required correct the zero position with the adjuster gt 0 lt the front panel GMC I Messtechnik GmbH 7 3 4 Battery test To test the battery for the voltage path and the battery for the cur rent path set the function switch to the positions 4 1 ab 2 one after another When at a time the pointer is within the bat tery section marked a on the scale the battery voltages are within the permissible range is assured that the error limits according to the data given in chapter 5 Specifications are maintained 4 Measurement 4 1 Notes on measurements Prior to connecting the meter check according to which of the cir cuitries shown in the following section the MAVOWATT 4 is to be connected Find out whether direct connection of current path and voltage path is possible on the basis of the system on which the measure ments are to be made and with respect to
11. et the function switch to the U and or U position and the selector switch for the voltage ranges to the range corresponding to the measured value The selector switch for the current ranges may be set to any position The voltage applied to terminals L1 2 and L2 5 can be read directly on the scale corresponding to the selected measuring range On three wire three phase systems of balanced load Set the function switch to the U position and the selector switch for the voltage ranges to the range corresponding to the measured value The selector switch for the current ranges may be set to any position Connect the voltage to terminals L1 2 L2 5 and L3 8 Read the measured value off the scale corresponding to the Selected measuring range To determine the phase voltage it is required to divide the read voltage value by 3 To determine the voltage of the outer conductors it is required to divide the read voltage value by 3 16 GMC I Messtechnik GmbH 4 5 2 Current measurement Set the function switch to the 1 and or l position and the selec tor switch for the current ranges to the range corresponding to the measured value The selector switch for the voltage ranges may be set to any position Connect the current path to terminals I 1 and I 3 Read the mea sured value off the scale corresponding to the measuring range and multiply it by the factor of 0 01 see table in chapter 5 Speci
12. fi cations 4 5 3 Phase sequence indication c Set the function switch to the L1L2L3 position Connect all of the 3 outer conductors in proper sequence to termi nals L1 2 L2 5 and L3 8 With correct phase sequence the pointer deflects up to the mark ing 2X 83 96 of full deflection with incorrect phase sequence up to the marking FaN 17 96 of full deflection The interlinked voltages must be gt 30 V and must not exceed 650 V The connected voltages may deviate from each other by a maxi mum of 5 GMC I Messtechnik GmbH 17 5 Specifications Measuring ranges for DC and single phase AC systems Nominal Nominal Nominal Factor c at scale division current voltage power 0 100 0 250 0 500 Measuring ranges for three wire three phase systems balanced load Nominal Nominal Nominal current voltage power A 0 100 0 250 0 500 Factor c at scale division 18 GMC I Messtechnik GmbH aka poka pais Factor c at scale division A V 0 100 0 250 0 500 50 100 1 1 100 200 2 250 500 1 500 1000 10 50 500 1 5 100 1000 10 250 2500 10 500 5000 10 50 2500 10 25 100 5000 10 250 12500 50 800 25000 100 Measuring ranges for DC and AC voltage for DC an
13. nected ahead of the current path It follows a the power outpu energy source meter reading consumption b the power drawn consumer meter reading consumption o The voltage path is behind the curren It follows a the power outpu energy source meter reading consumption of b power drawn consumer meter reading c consumption of by the internal he voltage path by the internal he current path connected ath by the internal he voltage path by the internal he voltage path L1 N L2 i 1 Aba I 1 12 3 o0 o o 6 L1 N L2 See Inputs for the internal consumption of the power meter in chapter 5 Specifications GMC I Messtechnik GmbH 4 5 Voltage and current measurement Even if the meter is connected for a power measurement you can use the power meter to measure voltages and currents on both DC systems and single phase AC systems and or three wire three phase systems of balanced load For and single phase AC systems the voltage must be applied to L1 2 and L2 5 Terminal L3 8 must not be connected With three wire three phase systems of balanced load without neutral conductor the voltages must be connected to terminals L1 2 L2 5 and L3 8 With current measurements the measuring current flows through connectors I 1 and I 3 4 5 1 Voltage measurement On DC and single phase AC systems S
14. o directly measure current and voltage on DC and single phase AC systems Under consideration of correction factors it is also possible to use the meter for reactive power measurements on three phase systems of balanced load and also for interlinked voltages The MAVOWATT 4 power meter is particularly suited for industrial measurements for service and mounting Also in the laboratory and in the test room diversified measuring tasks can be solved quickly and without problems 6 GMC I Messtechnik GmbH 3 Getting started 3 1 Description of the operating controls There are five connection terminals 1 figure 1 arranged on the front of the power meter two for current connection with the markings 1 and 3 and three for voltage connection with the markings L1 2 L2 5 and 13 8 They are contact protected The operating panel of the power meter consists of One selector switch for the voltage ranges 4 figure 1 with the four ranges 50 V 100 V 250 V and 500 V One selector switch for the current ranges 5 figure 1 which can be switched in four ranges 0 25 A 1 A 5 Aand 25 A One function switch 6 figure 1 featuring 12 positions 3 2 Installing the batteries Caution an all pole disconnection of the meter from the A measuring circuits before you open the battery L N compartment on the bottom Undo the slotted screw of the battery compartment cover using an adequate tool or a coin and remove the cov
15. ons This instrument fulfills the requirements of the applicable European and national EC guidelines We confirm this with the CE marking The relevant declaration of conformity can be obtained from GMC I Messtechnik GmbH The multi function power meter MAVOWATT 4 is constructed and tested in compliance with the safety rules of DIN VDE 0410 IEC 414 and VDE 0411 1 EN 61010 1 IEC 61010 1 When properly used the safety of both the user and the meter is assured Their safety is not assured however if the meter is misused or carelessly handled To maintain the technically safe and proper condition and to ensure safe operation it is absolutely necessary to carefully and completely read these operating instructions before using the meter and to follow them in all respects Please note the following safety precautions e The meter must only be operated by persons who understand the danger of shock hazards and know how to apply safety precau tions Shock hazards exist wherever voltages of more than 50 V can appear e When making measurements where shock hazards exist do not work alone A second person must be present e The maximum permissible voltage between any of the connectors and ground is 650 V e into account that unexpected voltages can appear on devices under test capacitors may be charged dangerously for instance e Verify that the test leads are in good condition e g no cracked insulation no open circuits e
16. s the basic error except for power factor measurement Reference conditions Ambient temperature 23 0 2K Humidity 40 60 rel humidity Position of use horizontal Frequency 45 Hz 65 Hz Wave shape on sinusoidal Voltage for voltage measurement for power factor measurement for phase sequence indication 20 0 8 1 2 Uy 0 1 0 Uy gt 50V gt 30 V dev from each other max 5 GMC I Messtechnik GmbH Current for current measurement for power factor measurement 0 12 0 10 0 1 2 ly 25A 0 3 1 0 ly Power factor cos p 0 0 866 1 at power factor measurement cos 0 0 95 0 99 Battery voltage 6 6 11 V for each of the two batteries Other influence quantities according to EN 60 051 IEC 51 Nominal ranges of use Temperature 0 1 25 50 Frequency for voltage measurement for current measurement 10 16 65 400 Hz 10 16 65 200 Hz 400 Hz mit Tol 10 10 16 65 400 Hz Influence quantities within the nominal ranges of use Temperature bei W 1 5 10 K bei V A 2 5 10 K Other influence quantities according to EN 60 051 Ambient conditions Operating temperatures 0 50 C Storage temperatures 25 65 C Power Supply Batteries 2 each 9 V flat cell batt IEC 6F22 6LF22 or GLRG1
17. tal Instrument Service When you need service please contact GMC I Service GmbH Service Center Thomas Mann Stra e 20 90471 N rnberg e Germany Phone 49 911 817718 0 Fax 49 911 817718 253 E Mail service gossenmetrawatt com This address if for Germany only Abroad our representatives or establishments are at your disposal DKD Calibration Laboratory for Electrical Quantities DKD K 19701 accredited per DIN EN ISO IEC 17025 2005 GMC I Messtechnik GmbH 23 Accredited measured quantities direct voltage direct current values resistance alternating voltage alternating current values AC active power AC apparent power power capacitance frequency and temperature 8 Product Support When you need support please contact GMO I Messtechnik GmbH Product Support Hotline Phone 49 911 8602 0 Fax 49 911 8602 709 E Mail support gossenmetrawatt com Edited in Germany Subject to change without notice A PDF version is available on the internet GOSSEN METRAWATT Phone 49 911 8602 111 GMC Messtechnik GmbH Fax 49 911 8602 777 S dwestpark 15 E Mail info gossenmetrawatt com 90449 N rnberg Germany www gossenmetrawatt com
18. tc e This meter must not be used for measurements on circuits with corona discharge high voltage e Measurements under moist environmental conditions are not per mitted e Absolutely verify that overloading of the nominal voltage and nom inal current ranges does not exceed the permissible limits See chapter 5 Specifications for limits GMC I Messtechnik GmbH 5 Repair replacement of parts and calibration When opening the meter live parts may be exposed Therefore the meter must be disconnected from all voltage sources prior to opening its case for repair replacement of parts or calibration If repair or cali bration can then not be avoided unless the meter is open and live this work must only be performed by a qualified person who understands the danger involved Faults and extraordinary stress When it must be assumed that safe operation is no longer possible take the meter out of service and secure it against accidental use It must be assumed that safe operation is no longer possible when the meter shows obvious signs of damage when the meter no longer functions correctly e after prolonged storage under adverse conditions 2 Application The electronic multi function power meter MAVOWATT 4 permits direct power measurements on DC systems as well as active power measurements on single ohase AC systems and on three wire three phase systems of balanced load In addition the MAVOWATT 4 power meter can be used t
19. y with a new 9 V flat cell battery 6F22 6LF22 or 61861 as described in chapter 3 2 Installing the batteries Fuse Replacement If a fuse blows eliminate the cause of the overload before placing the instrument back into operation Open the instrument as described under battery replacement Remove the blown fuse with the help of an object such as a test probe and replace it with a new F25A 500V 1 5kA fuse 22 GMC I Messtechnik GmbH Caution Be absolutely certain that only the specified fuses are used A The use of a fuse with different triggering characteristics a different nominal current or a different breaking capacity places the operator damping diodes resistors and other components in danger The use of repaired fuses or short circuiting of the fuse holder is prohibited Device Return and Environmentally Compatible Disposal The MAVOWATT 4 is a category 9 product monitoring and control instrument in accordance with ElektroG German Electrical and Electronic Device Law This device is not subject to the RoHS directive We identify our electrical and electronic devices as of August 2005 in accordance with WEEE 2002 96 EG and ElektroG K with the symbol shown to the right per DIN EN 50419 These devices may not be disposed of with the trash Please contact the GMC I Service GmbH regarding the return of old devices adress see below 7 Repair and Replacement Parts Service Calibration Center and Ren
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