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Using single phase power meter calibration phase Table Three-phase

Section [1] Zhu Li, editor. Interchangeability and techniques to measure basis (the book). Published measurement Mu,[link widoczny dla zalogowanych], i985. , 2] I, ~ O/DIS3408--3 Lang Qu Ji, vice creeping bar international standards. [3] JB3162.2-82 [] JJG67l a single-phase power meter with 90 test-phase phase meters Ping Qinghong (the amount of state practice at Mt) t shed his Korean Table I (ie, the number of Korean attack power j), ape electric operation , Critical points of use of electricity, good and reasonable}} j electricity plays an important role. This should be trapped its test cycle. However, recently also had to kill the shuttle home TV networks are meant for this. This article describes ... kind of pick up with the power setting fur-meter three-phase phase tables. First,[link widoczny dla zalogowanych], the power meter used to test the principle of the phase power meter weeping elm table stalk {bit table set theory is based on P-P0. 0s for the I} 『] The type of digital station PS10 potato phase single-phase power meter (0.1 .) Using the table in which D A pair of f;?, 3 Xu. The single-phase power meter calibration dates 1DI-c jack: increase the phase table, test connections as shown. Test time. First voltage and current rating of the table adjusted to be seized, and then change between the current and voltage phase angle. That adjust the current phase shifter, the phase that was seized in the table refers to the need for sub-degree line test if the time switch K backward end of the digital meter readings will be recorded as W and then the value of maintaining the same phase under the premise that, the switch backward port side, and the number of meter readings recorded as the most can be done to change the two measured phase angle l switch to another sub-degree line test. 1093 total shoe technology. N9.11 ink and digital power meter readings were the two -, the phase angle or the actual value of power factor cosg0: tp0 ~ aretgi. Fall (1) u21-Ⅱ l or cos = l / v / l +3 (rain I - K) (2) where: K = a1 test phase method has been applied for phase meters,[link widoczny dla zalogowanych], power measurement not in the same park two times ,[link widoczny dla zalogowanych], and called for testing power supply must be stable. If the three-phase energy meter calibration test platform, platform front-end equipped with an electronic exchange regulator, power supply instability in the soil should be less than l / min. Put on test 2.5 three phase meters, power meters by 0.1 standard fully meet the demand. 1.0 If you need to test for phase meters, power stability to ± 0,5 / rain, in the accurate calculation of the premise, but also can basically meet the test requirements. Second, test results processing and error calculation of power factor three-phase phase meters or representation for the error table manufacturers, different models are also different. In order to scale the length scale expressed as a percentage of error calculation for ~ introduction. For ease of use + to represent the length of the error will be converted into the measured value representation. Conversion, the phase of the table was seized with a number of points for each degree line seeking pop b value, and then calculated according to the following table shows the phase error: that is: I (a) (b / L) 1O0 (3) where: one by one test point table shows the phase error; - was seized phase table CoStp,[link widoczny dla zalogowanych], indicated value; - costp0 calculated by measuring the standard value;, one by one phase of the table's degree of effective scale scale; & - and tight dividing line was seized two adjacent dividing line equivalent of the distance and asked the two sub-degree line of the ratio of the difference between the readings. In order to deepen our understanding of the meaning of 6 values, is to IDI-costpi phase phase meters, for example, the value of the juice of 6 briefly considered. Measuring 0.8 by 0.6 points in the table the distance between the degree of 20ram, the division value is 0.7 and the corresponding unit of the European level measured 6-20 / (0.8 a o.-6) a 100mm. End points of degree r of 0.5 and was seized in accordance with sub-degree tight adjacent dividing line calculation. That is 0.5 to 0.7 according to the distance between the measured 18mm, can be calculated 6-18 / (0.7-0.5) for a 90mm. Manufacturers of the same model for the same length scale consistent with the phase-foot tables, 6, L values are the same. Third, the end of the Cambodian language is used to test for phase meters, wiring is simple, easy to operate. Yuan intuitive digital reading. Error. This is a direct comparison with the pointer table is used to test phase can not be compared. Application of the method proved + test 2.5 the following three-phase phase meters, is indeed a simple and ideal method. 1.0 If you want to test this method phase phase meters, the actual power meter in the standard error of ≤ 0.1; power stable conditions + eos ~ o in the calculation were seized by the table when the permissible error of l/l0 were of the whole, but also to meet the test requirements. In this, it is worth mentioning that the D31 test a 1.0 c. s + As the table when the table is different terminals, line connection test phase sequence voltage and current change should take U Si, respectively, and the Ue. cl. ~. Overnight, one by one ~ ~ ~ ~ ~ ~ One song ~ ~ ~ ~ made on behalf of hoop ~ ‰ ~ ~ one of a quantity of plants. ~ ~ ~ ~

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