Final report on COOMET 344/UA/05 Supplementary Comparison of 50/60 Hz Power (COOMET.EM-S2)

Transcription

1 State Enterprse All-Ukranan state research and producton center of standardzaton, metrolog, certfcaton consumers rght protecton (SE Ukrmetrteststandard Approved b the charman of TC.3 COOMET Charman of TС.3 COOMET T. Kolomets Fnal report on COOMET 344/UA/05 Supplementar Comparson of 50/60 Hz Power (COOMET.EM-S O. Velchko, S. Karpenko, V. Gachok, O. Akhmadov Januar 03 Plot laborator: SE Ukrmeterteststandard 4, Metrologchna Str., 03680, Kv, Ukrane E-mal: ermatec@ukrcsm.kev.ua Coordnator of comparson: O. Velchko Partcpants n the comparsons: SE Ukrmetrteststandard, Ukrane BelGIM, Republc of Belarus BIM, Bulgara Kv, Ukrane

2 COOMET.EM-S Fnal report Abstract To support the Calbraton and Measurement Capabltes (CMCs declared b members of COOMET n the framework of the CIPM-MRA, the COOMET Supplementar Comparson was organzed. Electrcal standard of low-frequenc (50/53 Hz power were compared at 3 Natonal Metrolog Insttutes (s of COOMET to establsh the relatonshp between the electrcal unts of AC power at these laboratores. The results of ths comparson are descrbed. The dfferences between almost all laborator s values and the reference values were wthn the expanded measurement uncertantes at a coverage factor k= []. Table of Content Introducton 3 Partcpants and organzaton of the comparson 3. Partcpants 3. Organzaton of the comparson 3 3. Travellng standard and measurement nstructon escrpton of the travellng standard 4 3. Unpackng and packng 5 4. escrpton of the method of measurement 7 4. Operatons before measurements 7 4. Measurements Uncertant of the measurement 7 5. Behavor of travellng standard 8 6 Measurement results of the comparson Results of the partcpatng nsttutes 0 6. Reference values 6.3 egrees of equvalence Par degrees of equvalence 8 Concluson 9 References 0 Appendx A. Methods of measurement Appendx A. Uncertant budgets 4 Page of 9

3 COOMET.EM-S Fnal report Introducton The COOMET supplementar comparson of the electrcal power standard n range of frequences 50 Hz and 53 Hz (comparson number n KCB COOMET.EM-S whch conducted under the CООМЕТ 344/UA/05. Ths project s the comparson of Natonal standards of electrcal power and power factor between the countres partcpants of the regonal metrologcal organzaton COOMET. In these comparson took part three natonal metrolog nsttutes: SE Ukrmetrteststandard (Ukrane, BelGIM (Belarus, BIM (Bulgara. Relevance of the comparson results are expected at the level of better than 0.005%. The SE Ukrmeterteststandard (UMTS was selected as the plot laborator, whch s responsble for provdng travellng standard, coordnatng the schedule, collectng and analzng the comparson data, and preparng the draft report. Partcpants and organzaton of the comparson. Partcpants There are 3 partcpants n ths comparson. The acronms of the laboratores and ther countres are gven n Table. Table Lst of partcpants, n the sequence of measurements performed Abbrevaton of Address Contact person e-mal, phone, fax State Enterprse All- Ukranan state research and producton center of standardzaton, metrolog, certfcaton consumers rght protecton (SE Ukrmetrteststandard UMTS 4, Metrologchna Str., 03680, Kv, Ukrane O. Velchko, O. Akhmadov ermatec@ukrcsm.kev.ua Tel./Fax: Belarusan State Insttute of Metrolog 3 Bulgaran Insttute of Metrolog. Organzaton of the comparson BelGIM BIM 93 Starovlensk Ave, 0053, Mnsk, Belarus 6-th September Str, 000, Sofa, Bulgara A. Volkodatov volkodatov@belgm.b Tel.: Fax: A.G. Yovcheva a.ovcheva@bm. government.bg Tel.: ( Fax: ( The partcpants had one month for conductng measurements and returnng travellng standard to the plot laborator. The approxmate perod for measurement conductng are weeks, the rest tme ( weeks s avalable for transportaton of travellng standard []. In the case of unexpected delas, the coordnator of the comparson and the next partcpant should be notfed b fax or b e- mal. The lst of dates of measurements s gven n Table. Table The lst of dates of measurements Laborator ates of measurements ate of report UMTS Januar 008 BelGIM Februar 009 Ma 009 UMTS June 009 Aprl 00 BIM Ma 0 June 0 Jul 0 UMTS November 0 ecember 0 Page 3 of 9

4 COOMET.EM-S Fnal report 3. Travellng standard and measurement nstructon 3.. escrpton of the travellng standard Selected travellng standard s Radan Research RM 5-04 precson electrc power standard s/n 448 (RM RM 5-04 s the most versatle portable standard avalable for provdng as man as 6 dfferent measurement functons whch are confgured b specal wa. RM 5-04 s capable for measurng electrcal actve power. Wth the help of button SELECT can be selected the measured value: Wh/kW, VAh/kVA, VARh/kVAR, mvh/v, mah/a. In Supplementar Comparson of 50/60 Hz Power was measured electrcal actve power so t h ad to be selected klo Watt (kw n the menu of button SELECT and the constant of the frequenc output s pulse/kws. The measure process of measurng actve power s full automatcall wth the help of connector output count number of pulses whch s drectl proportonal to the measured actve power. The output frequenc of RM 5-04 s pulse/s. RM 5-04 s well-suted for test applcatons that requre multple measurements wth hgh accurac and stablt. In addton to ts auto rangng capabltes, RM 5-04 features three summng current nputs whch can be used to perform closed lnk testng. A test current of 50 amps maxmum can be used b applng 50 amps to each of the nputs. All errors are n percent of readng at an combnaton of the normal operatng condtons. Note: Stablt s ncluded wthn the maxmum accurac specfcatons for all measurement functons. All other measurement functons other than Watt hours and VAR hours have an accurac of ± 0.% maxmum. Power factor s referenced to Watt hours and t s also assumed that voltage s the reference vector. Appearance of RM 5-04 s shown on Fgure. Fgure Travellng standard RM 5-04 Travellng standard RM 5-04 s sngle-phase electrc power meter, works on prncples of dgtal processng of electrcal current and voltage sgnals. Man characterstcs of travellng standard RM 5-04: nput voltage: V (RMS; nput current: 0, 50 А (RMS; frequenc of the nput voltage and current sgnals: 48 6 Hz; constant of the frequenc output: pulse/kws; Page 4 of 9

5 COOMET.EM-S Fnal report suppl voltage: V (RMS; workng range of the temperature: 0 С 40 C; keepng range of the temperature: 0 С C; workng range of the humdt: %; dmensons: mm; weght: 3 kg. Phscal dmenson of the travellng standard RM 5-04 s shown on Fgure. Fgure Phscal dmenson of travellng standard RM 5-04 User manual for travellng standard s attached. The partcpants of the comparson should have learned the documentaton before comparson conductng. 3. Unpackng and packng Travellng standard wll be transported n a contaner, whch s desgned for safe transportaton of the standard. Upon arrval, partcpants should check the contaner and make sure that all parts are present accordng to the lst. After the measurement model should be carefull packed back nto the contaner, n whch t has arrved. Lnear dmensons of contaner: 700 mm x 50 mm x 0 mm. The weght of contaner (wth the content s about 0 kg. If the damage of the contaner s detected, travellng standard should be packed n new contaners, whch wll provde the necessar protecton durng transportaton. Upon recept of travellng standard t s necessar to check the contaner for external damage and verf the completeness of travellng standard n accordance wth the attached lst. Page 5 of 9

6 COOMET.EM-S Fnal report The cop of the techncal descrpton of RM 5-04 s attached. It s necessar to famlarze wth the features of travellng standard before startng the measurement. It must be carefull removed from the contaner. Openng the corpus of RM 5-04 s strctl prohbted. If some defects of travellng standard are found, the partcpatng laborator should have mmedatel to nform the plot laborator b fax or e-mal. If the repar of travellng standard s needed, the partcpant of comparsons should send travellng standard n a plot laborator. Partcpants must nform the plot laborator b fax or e-mal about the arrval of travellng standard b usng the form shown on Fgure 3 []. Confrmaton note for recept ate of arrval Name of responsble person The travel standard amaged Not amaged Addtonal notes: Fgure 3 Sample form for the nformaton of arrval of travellng standard RM 5-04 The partcpatng laborator should nform the plot laborator about departure of travellng standard b usng the form shown on Fgure 4 []. Confrmaton note for dspatch ate of shpment Name of responsble person Shpment nformaton (compan name etc. Addtonal notes: Fgure 4 Sample form for the nformaton of departure of travellng standard RM 5-04 After the measurements, each partcpant of comparson must send the travellng standard to the plot laborator. The laboratores partcpatng n the comparson are responsble for arrangng shpment of travellng standard to the plot laborator. Page 6 of 9

7 COOMET.EM-S Fnal report 4. escrpton of the method of measurement 4. Operatons before measurements Before the measurements, t s necessar to famlarze desgn features and work prncples of travellng standard b usng techncal descrpton (user manual of RM Connecton travellng standard n accordance wth the scheme s shown on Fgure Measurements Fgure 5 Connecton scheme for travellng standard RM 5-04 Before the measurements of actve power n the RM 5-04 b measurng the output pulses t must be warmed up for 4 hours (connected to the man power suppl. Current and voltage sgnals must be connected for 4 ho urs before measurement. Followng these procedures, short-term shutdown sgnal current or voltage from travellng standard wll not lead to loss of the standard s characterstcs. But f the power suppl of travellng standard wll be turned off, then the procedure of warmng up must be made over agan. Man measurements should be performed wth the nput sgnals and envronmental condtons such as: Voltage: 0 V ± 0. %; Current: 5 A ± 0. %; Power factor:.0, 0.5 Lag, 0.5 Lead devaton from the nomnal value not exceedng ± 0.00%; Frequenc: 50 Hz ± 0.05 Hz and 53 Hz ± 0.05 Hz; Temperature: 3 C ± C; Humdt: 0 % 70 %; Suppl voltage: 0 V ± 5 %; Frequenc of the suppl voltage: 50 Hz ± 0. Hz. 4.3 Uncertant of the measurements Uncertant of the measurements should be calculated accordng to the GUM (Gude to the expresson of uncertant n measurement JCGM 00:008 [3] (GUM 995 wth mnor correctons, JCGM 0:008 [4]. Wth the results of Page 7 of 9

8 COOMET.EM-S Fnal report measurements should be gven a model that descrbes how the measurement result was obtaned consderng all nfluencng quanttes (voltages, currents, etc.. For each of the nfluencng quanttes should be gven the descrpton of the source of uncertant and an assessment of ths uncertant. All nfluencng quanttes, ther uncertantes, nfluencng coeffcents, degrees of freedom and levels of confdence should be gven n the budget of the uncertant. The budget of the uncertant should nclude such number of nfluencng quanttes and ther uncertantes, whch ensures the hghest level measurements of electrcal power for each of the laboratores. 5. Behavor of travellng standard Travellng standard RM 5-04 model provdes extreme lneart coupled wth extreme stablt. In addton, hgh resoluton and repeatablt permts rapd and accurate sngle revoluton testng both n the feld and n the lab wth the approprate optcal pckup. The RM-5 s well-suted for test applcatons that requre multple measurements wth hgh accurac and stablt. The frst da of startng comparson was 8 Januar 008. Comparson fnshed 9 ecember 0.UMTS has performed repeated measurements on travellng standard for 35 months. urng the course of ths comparson the drft effect s calculated. From these measurements after analzng specfed that the behavor of travellng standard s the lnear ft and can be seen n Fgures 6. The drft, n µw 0,0 0,0 0,0-0,0-0, month Fgure 6 Behavor of the travellng standard for PF=.0 and f=50 Hz The drft, n µw 0,0 0,0 0,0-0,0-0, month Fgure 7 Behavor of the travellng standard for PF=.0 and f=53 Hz Page 8 of 9

9 COOMET.EM-S Fnal report The drft, n µw month Fgure 8 Behavor of the travellng standard for PF=0.5 Lag (nd and f=50 Hz The drft, n µw month Fgure 9 Behavor of the travellng standard for PF=0.5 Lag (nd and f=53 Hz The drft, n µw month Fgure 0 Behavor of the travellng standards (PF=0.5 Lead (cap, f=50 Hz The drft, n µw month Fgure Behavor of the travellng standard for PF=0.5 Lead (cap and f=53 Hz The correcton values d together wth ther correspondng uncertantes u dp are gven n the table below. Pdrft ( drft Page 9 of 9

10 Table 3 Correcton values and Uncertantes Travellng standard RM 5-04 Power factor PF d P drft COOMET.EM-S Fnal report u( d Pdrft µw/(va.0 (50 Hz (53 Hz Lag (50 Hz Lag (53 Hz Lead (50 Hz Lead (53 Hz. 6.5 µw/(va The lnear ft s gven b: x x = m ( ( Where: (month the gven date; (month the average date of the UMTS measurements on the travellng standard; x (µw/va the actve power value gven b the lnear ft on date ; x (µw/va the average actve power value of UMTS measurements on the travellng standard; m (µw/va/month the drft of the nductance value per month. 6. Measurement results of the supplementar comparson 6.. Results of the partcpatng nsttutes Each laborator whch partcpates n the comparson should provde a r eport wthn 6 weeks from the date of departure travellng standard. The report should be send to the plot laborator b e-mal: ermatec@ukrcsm.kev.ua. The report must contan: descrpton of the method of measurement; descrpton of the measurng scheme; confrmaton of the traceablt of measurements performed (f partcpatng laboratores does not have realzaton sstem of the unt of electrcal power, must provde proof of traceablt from another laborator; temperature and humdt n the laborator durng the measurements; measurements: the values of amendments for the travel standard (6 values for the frequences of 50 Hz, 53 Hz and power factor:.0, 0.5 Lag, 0.5 Lead; values of the correspondng standard uncertantes, the effectve values of the degrees of freedom and expanded uncertant; detaled budget of the uncertant, whch wll be ncluded n the report of the comparsons. The partcpatng laborator wll be nformed f the sgnfcant dfference between ts results of measurements and prelmnar reference value wll be found. Other nformaton about the measurement results wll not be reported. Appendx A s presented the methods of measurement and the measurng schemes of s. The actve power values x and ther expanded uncertantes u( x reported b the partcpants are gven n Table 4. etaled uncertant budgets from all partcpants are gven n Appendx A. Each of the x values has been corrected for the drft of the travellng standard. The correcton values dpdrft and the corrected actve power values Pcorr are also gven n the tables below, together wth ther correspondng uncertantes u dp and u P. ( drft ( corr P corr = x + dp drft, ( Page 0 of 9

11 COOMET.EM-S Fnal report u P = u x + u dp ( corr ( ( ( ( drft. (3 Note: For the UMTS results, t s to be expected that there s a correlaton between u x and u d P. For reasons of ( ( drft smplct, these correlaton have been gnored, whch ma result n a slghtl overestmated values of u P. ( corr Table 4 Measurement results wth drft correctons on travellng standard (the reported uncertantes are combned uncertantes Laborator x µw/(va u ( x µw/(va d P drft µw/(va u( d Pdrft µw/(va P corr µw/(va u ( P corr µw/(va PF.0 (50 Hz BelGIM UMTS BIM PF.0 (53 Hz BelGIM UMTS BIM PF 0.5 Lag (50 Hz BelGIM UMTS BIM PF 0.5 Lag (53 Hz BelGIM UMTS BIM PF 0.5 Lead (50 Hz BelGIM UMTS BIM PF 0.5 Lead (53 Hz BelGIM UMTS BIM Reference values Accordng to the recommendaton COOMET R/GM/9 [5] on the bass of measurement results and assocated uncertantes x, u( x, = presented b partcpants of comparson, calculate the value of the crteron χ. { } n,..., χ = n = ( x x ref u ( x (4 where: Page of 9

12 x ref n = = n = x u ( x u ( x COOMET.EM-S Fnal report (5 x ref reference value, u ( x ref = n = u ( x (6 u ( x ref the uncertant of the Reference Value. To checks consstenc of comparsons were used crteron value, calculated from data provded b the does not exceed the crtcal value χ for confdence level 0.95 and the number of degrees of freedom n- χ χ ( n- (7 0, 95 Values for crteron χ are gven n Table 5. χ Table 5 Values for crteron Power factor PF.0 (50 Hz (53 Hz Lag (50 Hz Lag (53 Hz Lead (50 Hz Lead (53 Hz 0.46 χ χ 0 95( n-, ata from dfferent s ma be deemed agreed that s an objectve confrmaton of the stated uncertantes. Reference Values and Uncertantes are gven n Table 6. Table 6 Reference Values and Uncertantes Travellng standard RM 5-04 Power factor PF Reference Value RV µw/(va Uncertantes of Reference Value u(rv µw/(va.0 (50 Hz (53 Hz Lag (50 Hz Lag (53 Hz Lead (50 Hz Lead (53 Hz The corrected values are also presented n the graphs n Fgures 7. UMTS result n ths comparson s the average value of the ndvdual results reported b UMTS for travellng standard. Page of 9

13 COOMET.EM-S Fnal report Measurement value 8,00E-05 6,00E-05 4,00E-05,00E-05 0,00E+00 RV U(RV Value -,00E-05 Fgure Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=.0 and f=50 Hz 5,00E-05 Measurement value 4,00E-05 3,00E-05,00E-05,00E-05 0,00E+00 -,00E-05 -,00E-05 RV U(RV Value Fgure 3 Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=.0 and f=53 Hz Measurement value 6,00E-05 4,00E-05,00E-05 0,00E+00 -,00E-05-4,00E-05-6,00E-05-8,00E-05 -,00E-04 RV U(RV Value Fgure 4 Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=0.5 Lag and f=50 Hz Page 3 of 9

14 COOMET.EM-S Fnal report Measurement value 4,00E-05,00E-05 0,00E+00 -,00E-05-4,00E-05-6,00E-05-8,00E-05 -,00E-04 RV U(RV Value Fgure 5 Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=0.5 Lag and f=53 Hz,0E-04 Measurement value 9,00E-05 7,00E-05 5,00E-05 3,00E-05,00E-05 -,00E-05 RV U(RV Value -3,00E-05 Fgure 6 Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=0.5 Lead and f=50 Hz Measurement value,0e-04 9,00E-05 7,00E-05 5,00E-05 3,00E-05,00E-05 -,00E-05-3,00E-05-5,00E-05 RV U(RV Value Fgure 7 Actve power values measured b the partcpants and corrected for drft of travellng standard for PF=0.5 Lead and f=53 Hz Page 4 of 9

15 COOMET.EM-S Fnal report 6.3 egrees of equvalence For each partcpant, the degree of equvalence wth the correspondng uncertant u : ( wth respect to the reference value s determned as: = P RV (8 corr u = up + u r up u (9 ( ( ( corr ( (RV ( corr (RV where r s the correlaton coeffcent between laborator result and the RV. Correlatons between the results from the laboratores and the reference value have been gnored ( r = 0 n the computaton of u, except for the case of UMTS ( u ( = ( up ( + ( u(rv (0 corr Addtonall, the performance ndcator E n s calculated as: E n = ( u ( All degrees of equvalence and the E values are gven n Table 7. n Table 7 egrees of equvalence ( and Laborator E n values u µw/(va µw/(va 3 4 PF.0 (50 Hz BelGIM UMTS BIM PF.0 (53 Hz BelGIM UMTS BIM PF 0.5 Lag (50 Hz BelGIM UMTS BIM ( E n Page 5 of 9

16 COOMET.EM-S Fnal report 3 4 PF 0.5 Lag (53 Hz BelGIM UMTS BIM PF 0.5 Lead (50 Hz BelGIM UMTS BIM PF 0.5 Lead (53 Hz BelGIM UMTS BIM The values of wth the uncertantes are also plotted n Fgures 8 3. egrees of equvalence 8,00E-05 6,00E-05 4,00E-05,00E-05 0,00E+00 -,00E-05 Fgure 8 egrees of equvalence for PF=.0 and f=50 Hz egrees of equvalence 6,00E-05 4,00E-05,00E-05 0,00E+00 -,00E-05 Fgure 9 egrees of equvalence for PF=.0 and f=53 Hz Page 6 of 9

17 COOMET.EM-S Fnal report egrees of equvalence,50e-04,00e-04 5,00E-05 0,00E+00-5,00E-05 Fgure 0 egrees of equvalence for PF=0.5 Lag and f=50 Hz egrees of equvalence,0e-04 8,00E-05 4,00E-05 0,00E+00-4,00E-05 Fgure egrees of equvalence for PF=0.5 Lag and f=53 Hz egrees of equvalence 6,00E-05 3,00E-05 0,00E+00-3,00E-05-6,00E-05-9,00E-05 Fgure egrees of equvalence for PF=0.5 Lead and f=50 Hz Page 7 of 9

18 COOMET.EM-S Fnal report egrees of equvalence 6,00E-05 3,00E-05 0,00E+00-3,00E-05-6,00E-05-9,00E-05 Fgure 3 egrees of equvalence for PF=0.5 Lead and, f=53 Hz 6.4 Par degrees of equvalence Par degree of equvalence of -th and j-th partcpants estmated b: wth combned standard uncertant u ( c are = j, ( u ( = u ( + u (. (3 c c c j The expanded uncertantes U( s estmated b: U( = u ( = u ( + u (. (4 c c c j Par degrees of equvalence of -th and j-th partcpants respect to the RV are shown n Tables 8-3. and ts expanded uncertantes U( (k = wth Table 8 egrees of equvalence ( and expanded uncertantes U( for PF=.0 and f=50 Hz U( U( U( BelGIM UMTS BIM Page 8 of 9

19 COOMET.EM-S Fnal report Table 9 egrees of equvalence ( and expanded uncertantes U( for PF=.0 and f=53 Hz U( U( U( BelGIM UMTS BIM Table 0 egrees of equvalence ( and expanded uncertantes U( for PF=0.5 Lag and f=50 Hz U( U( U( BelGIM UMTS BIM Table egrees of equvalence ( and expanded uncertantes U( (PF=0.5 Lag, f=53 Hz U( U( U( BelGIM UMTS BIM Table egrees of equvalence ( and expanded uncertantes U( for PF=0.5 Lead and f=50 Hz U( U( U( BelGIM UMTS BIM Table 3 egrees of equvalence ( and expanded uncertantes U( for PF=0.5 Lead and f=53 Hz U( U( U( BelGIM UMTS BIM Page 9 of 9

20 COOMET.EM-S Fnal report Concluson The comparson was organzed to measure the actve power at a nomnal values of 0 V, 5 A, 50 Hz and 53 Hz at.0, 0.5 Lag, 0.5 Lead power factors. Ths comparson s dentfed as the COOMET.EM-S and was carred out as the COOMET project no 344/UA/05. The results from all out of three partcpants are n agreement wth the Reference Values. In ths comparson, the partcpants report three dfferent methods to realze the traceablt of the unt of actve power. The results from these dfferent methods are n good agreement wthn the reported uncertantes. urng analzng the data on the results of the supplementar comparson at 50 Hz and 53 Hz s determned that the data on the frequenc of 53 Hz rather better than of 50 Hz, ths s related to pckups external stress felds that lead to varatons n the load current wth a frequenc beat frequenc equal to the dfference between the current source and voltage suppl. References [] EURAMET.EM-K5. Ke Comparson of 50/60 Hz Power Fnal Report Hüsen Çacı March 0 TÜB_TAK Ulusal Metroloj Ensttüsü. [] Recommendaton COOMET R/GM/: 00 Regulatons on comparsons natonal standards COOMET. [3] JCGM 00:008 Evaluaton of measurement data- Gude to the expresson of uncertant n measurement. [4] JCGM 0:008 Evaluaton of measurement data -Supplement t o the Gude to the expresson of uncertant n measurement -Propagaton of dstrbutons usng a Monte Carlo method. [5] Recommendaton COOMET R/GM/9: 008 Gudelnes for evaluatng data Addtonal comparsons COOMET. Page 0 of 9

21 COOMET.EM-S Fnal report Appendx A. Methods of measurement UMTS The base of State Standard of electrcal power s precson comparator of electrcal power COM 303 that s used for storage, measurements and transfer of the electrcal power unt to other devces. The correcton factors of comparator COM 303 are determned durng electrcal power unt reproducton procedure. The structural scheme of State Standard n the regme of electrcal power unt reproducton procedure s presented on the Fgure A. Fgure A The structural scheme of State Standard n the regme of electrcal power unt. On the scheme above: precson shunt; hghl stable generator of drect current; 3, precson dgtal voltmeters of drect voltage AGILENT 3458A ; 4 precson current shunt; 5, 9 precson thermo-electrc converters; 6, 0 precson dgtal nano-voltmeters AGILENT 3440A ; 7 hghl stable generator of alternate voltage and current; 8 precson resstor voltage dvder; hghl stable generator of drect voltage. The reproducton procedure s conducted as follows: the swtches S and S are swtched to poston I; wth assstance of hghl stable generator of alternate voltage and current (7 the desred voltage V~, current I~ and phase shft angle are formed; the values of voltage V~, current I~ and phase shft angle measured b precson comparator COM 303 are recorded; the measurement results of precson dgtal nanovoltmeters VI (6 and VV (0 are recorded; the swtches S and S are swtched to poston II; wth assstance of hghl stable generator of drect current adjust the current threw precson current shunt (4 untl on precson dgtal nanovoltmeters (6 settles the same voltage VI; the value of voltage VC, measured b precson dgtal voltmeter of drect voltage (3 s recorded; wth assstance of hghl stable generator of drect voltage adjust the voltage on precson resstor voltage dvder (8 untl on precson dgtal nanovoltmeters (9 settles the same voltage VV; the value of voltage VC, measured b precson dgtal voltmeter of drect voltage ( s recorded. Page of 9

22 COOMET.EM-S Fnal report BelGIM escrpton of the measurng scheme The calbraton scheme s presented on the Fgure A. Measurng perod T Fgure A Calbraton scheme Temperature and humdt n the laborator durng the measurements: Temperature: 3 C ± C; Relatve humdt: from 30,0 % to 36,0 %; Perod of measurement: 00 seconds. Page of 9

23 COOMET.EM-S Fnal report BIM The RM 5-04 was measured usng the power standard of BIM. Reference values for the calculaton of the relatve error were n each case the apparent power calculated from voltage and current appled. The operatng prncple s based on sntheszed ac voltages, the use of onl a sngle samplng voltmeter, and on computerzed evaluaton b means of the dscrete Fourer transform (FT. The traceablt to the SI unts dc voltage and dc resstance s ensured b the rms voltmeter and the ac shunt wth small and well-known frequenc characterstcs, both calbrated aganst natonal standards. escrpton of the measurng scheme Calbraton s carred out accordng to the Fgure A3. Fgure A3 Calbraton scheme Confrmaton of the traceablt of measurements performed (f partcpatng laboratores does not have realzaton sstem of the unt of electrcal power, must provde proof of traceablt from another laborator: Two-Stage Standard Current transformer tpe SCT 00 (calbraton mark 48 PTB 08; Standard Inductve Voltage vder tpe (calbraton mark 450 PTB 08; Hgh Precson Resstor tpe HPR 0 (calbraton mark 0-EMM/ , NCM; gtal multmeter tpe 3458A (traceable to natonal standard for C voltage. Temperature and humdt n the laborator durng the measurements: Temperature: 3 C ± C; Relatve humdt: from 4,8 % to 60,0 % Perod of measurement: Page 3 of 9

24 COOMET.EM-S Fnal report Appendx A. Uncertant budgets UMTS Uncertant Budget cosφ =.0, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal.7 6. measurement Conf. level = 95 % k =.0000 Expanded uncertant = 3 Uncertant Budget cosφ =.0, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal measurement Conf. level = 95 % k =.0000 Expanded uncertant = 3 Uncertant Budget cosφ = 0.5 Lag, f = 50 Hz. Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal measurement Conf. level = 95 % k =.95 Expanded uncertant = 94 Page 4 of 9

25 COOMET.EM-S Fnal report Uncertant Budget cosφ = 0.5 Lag, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal measurement Conf. level = 95 % k =.55 Expanded uncertant = 96 Uncertant Budget cosφ = 0.5 Lead, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal measurement Conf. level = 95 % k =.47 Expanded uncertant = 97 Uncertant Budget cosφ = 0.5 Lead, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of ETU from converter, resstor and multmeter (µw/va normal Std uncertant of normal measurement Conf. level = 95 % k =.393 Expanded uncertant = 98 Page 5 of 9

26 COOMET.EM-S Fnal report BelGIM Uncertant Budget cosφ =.0, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 7 Uncertant Budget cosφ =.0, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 56 Uncertant Budget cosφ = 0.5 Lag, f = 50 Hz. Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular 0.. Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 6 Page 6 of 9

27 COOMET.EM-S Fnal report Uncertant Budget cosφ = 0.5 Lag, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 6 Uncertant Budget cosφ = 0.5 Lead, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 6 Uncertant Budget cosφ = 0.5 Lead, f = 53 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va normal Error of Comparator K005 correcton due to the quantzaton process (µw/va rectangular Error of Comparator 3 K005 (from specfcaton (µw/va rectangular Std uncertant of normal measurement Conf. level = 95 % k = Expanded uncertant = 6 Page 7 of 9

28 COOMET.EM-S Fnal report BIM Uncertant Budget cosφ =.0, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.0380 Expanded uncertant = 5 Uncertant Budget cosφ =.0, f = 5.63 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.0380 Expanded uncertant = 5 Uncertant Budget cosφ = 0.5 Lag, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.303 Expanded uncertant = 4 Page 8 of 9

29 COOMET.EM-S Fnal report Uncertant Budget cosφ = 0.5 Lag, f = 5.63 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.34 Expanded uncertant = 5 Uncertant Budget cosφ = 0.5 Lead, f = 50 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.05 Expanded uncertant = 3 Uncertant Budget cosφ = 0.5 Lead, f = 5.63 Hz Quantt (unt strbuton x u(x ν c u ( Error from RM 5-04 (µw/va Normal Error of PPCS from transformers, resstor and multmeter (µw/va Normal Std uncertant of measurement Normal Conf. level = % k =.0536 Expanded uncertant = 3 Page 9 of 9