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A Data Matrix is a two-dimensional barcode consisting of black and white “cells” or modules . ISO/IEC —Data Matrix bar code symbology specification; ISO/IEC —2-D Print quality standard; ISO/IEC — Symbol. ISO/IEC. Second edition. Information technology — Automatic identification and data capture techniques — Data Matrix bar code symbology. ISO/IEC INFORMATION TECHNOLOGY – AUTOMATIC IDENTIFICATION AND DATA CAPTURETECHNIQUES – DATA MATRIX BAR CODE.

This article needs additional citations for verification. These methods give a permanent mark which can last up to the lifetime of the component.

Also shown are the end-of-message code marked Endthe padding P and error correction E bytes, and four modules of unused space X. Symbols have an even number of rows and an even number of columns. As more data is encoded in the symbol, the number 160222 cells rows and columns increases. Check out our FAQs.

Data Matrix

Use dmy dates from July Articles needing additional references from February All articles needing additional references All articles with unsourced statements Articles with unsourced statements from October Wikipedia articles needing clarification from October Articles with unsourced statements from December Commons irc link is on Wikidata.

On 19 May Judge Joan N. Official ZXing “Zebra Crossing” project home”.

For each product run the unique code is supplied to the printer. Views Read Edit View history. The publication of standardized symbology specifications is designed to achieve this.

Base mode data starts with a length indicator, followed by a number of data bytes. Data Matrix codes are used in the food industry in autocoding systems to prevent food products being packaged and dated incorrectly. A Data Matrix symbol can store up to 2, alphanumeric characters. Character code interpretations are shown in the table below. It can store digits, upper-case letters, and many punctuation marks, but has no support for lower-case letters. It specifies the Data Matrix symbology characteristics, data character encodation, symbol formats, dimensions and print quality requirements, error correction rules, izo algorithm, and user-selectable application parameters.

Data Matrix – Wikipedia

Prior to the expiration of U. The message read ” Hello, World!

Retrieved 22 February While the ruling was delivered after the patent expired, it precluded claims for infringement based on use of Data Matrix prior to November Manufacturers of bar code equipment and users of the technology require publicly available isso symbology specifications to which they can refer when developing equipment and application standards. Data Matrix is a two-dimensional matrix symbology which is made up of nominally square modules arranged within a perimeter jso pattern.

Barcode reader Barcode printer. The C40 and Text modes have four separate sets. By using this site, you agree to the Terms of Use and Privacy Policy.

Depending on the coding used, a “light” cell represents a 0 and a “dark” cell is a 1, or vice versa. 160022 only difference is that they reverse upper-and lower-case letters.

The length of the encoded data depends on the number of cells in the matrix. Monday to Friday – Multiple encoding modes are used to store different kinds of messages. Some characters are split in two pieces, such jso the initial W, and the third ‘i’ is in “corner pattern ido rather than the usual L-shaped arrangement. Proof sent to secretariat or FDIS ballot initiated: Data Matrix codes, along with other open-source codes such as 1D barcodes can also be read with mobile phones by downloading code specific mobile applications.

Within these borders kso rows and columns of cells encoding information. Large symbols contain several regions. Codes are maintained internally on a food manufacturers database and associated with each unique product, e. In order to make that less likely, the length and data bytes are obscured by adding a pseudorandom value R nwhere n is the position in iecc byte stream.

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This part of IEC applies to three-phase and single-phase power transformers (including auto-transformers) with the exception of certain categories of. NORME CE1 INTERNATIONALE IEC INTERNATIONAL STANDARD Edition Edition consolidée par l’amendement Edition . Buy IEC Ed. Power transformers Part 1: General from SAI Global.

These terms have no significance as irc which of the windings has the higher rated voltage and should not be used except in the context of direction of active power flow see IEV and I The test current per phase – shall be stated 3 It shall be ensured that the current in the neutral connection is compatible with its current- carrying capability.

IEC 1 Power transformers General | Duy Nguyen –

IEC consists of the following parts, under the general title: CFVV The tapping voltage in any untapped winding is constant from tapping to tapping. At thetime of publication,theeditions indicated were valid. Open windingsin a three-phase transformer that are not connectedtogether in the transformer but have both ends of each phase winding kec out to terminals are indicated as III HVor iii intermediate or low-voltage windings.

Power transformers and kec IEC Example 1 A distributiontransformerwithhigh-voltage windingfor 20 k vdelta-connected.

Abscissa Tapping factor, percentage indicating relative number of effective turns in tapped winding. For multi-winding transformers, the rated power of each windingshouldbegiven.

Short-circuit impedance,impedance or range see annex C. Atransformer is considered as complyingwiththispart when thequantitiessubjectto tolerances are not outside the tolerances given in table 1. I 660076-1 autre s The measurements are carried out with a current not exceeding the difference between the rated currents on the low-voltage side and the high-voltage side.

The lower boundary is determined by permissible overcurrent on the secondary side during a through-fault. Direct current shall be 6076-1 for the measurement.

NOTE The selection of an impedance value by the user is subject to conflicting demands: Inallresistancemeasurements,careshallbetakenthattheeffects of self-inductionare minimized. Testsshallbemadeatthemanufacturer’sworks,unlessotherwiseagreedbetweenthe manufacturer and 6076-1 purchaser. Tests shall be made at any ambient temperature between 10 “C and 40 “C and with cooling water if required at any temperature not exceeding 25 “C.

The boundary tappings where such limitations appear are called ‘maximurn voltage tapping’ and ‘maximum current tapping’ see figure 1. NOTE It is recognized that the most severeloading conditions for testvoltagesourceaccuracy are usually 6076-1 by large single-phase transformers.

The measured no-load loss is Pm,and the corrected no load loss is taken as: S dry-type transformer a transformer of which the magnetic circuit and windings are not immersed in an insulating liquid [IEV 3.

I specialist marketing 13 1 unacceptable, other A temperature-rise type test, if specified, shall be carried out on one tapping only. Whethertransformerswillbesubjectedtofrequentovercurrents,forexample,furnace transformers and traction feeding transformers. The delta winding phasors lag the high-voltagewinding phasors by “.

See definitions of 60076–1 terms below. I P Short-circuitcharacteristics of theconnectedsystems expressed as short-circuitpower or current, orsystemimpedance data andpossiblelimitationsaffectingthetransformer design see IEC I NOTE 2Whenthe windings of thepairhave different rated powervalues the load loss is referred to rated current in the winding with the lower rated power and the reference power should be mentioned.

Rated voltage for each winding. The winding resistance isc is made at a temperature 8. Thesedeviationsshould be subject to agreement between themanufacturerand the purchaser.

Maximum voltage tapping Theshortnotation of tappingrangeandtappingstepsindicatesthevariationrange of the ratio of the transformer. Inthecase of transformershavingmorethanonestar-connectedwindingwithneutral terminal, the zero-sequence impedance is dependent upon the connection see 3. As figure l a illustrates,thisappliesfor minus tappings, on the tapped winding, under CFVV, and for plus tappings on the untapped winding underVFVV figurelb. The connection diagrams show the high-voltage winding above, and the low-voltage winding below.

The IEC shall not be held responsible for identifying any or all such patent rights. The neutral conductor and terminal of transformers not intended to carry load between phase and neutral shall be dimensioned for earth-fault current. I made the wrong choice D I agent purchasing librarian D D other The specification of these data may be accomplished in two different ways: Wave shape of supply voltage Iev supply voltage of which the wave shape is approximately sinusoidal.

NOTE This option is to be used inparticular to give abasis for designandguaranteesconcerning temporary emergency loading of large power transformers.

The current in the neutral and the duration of applicationshould be limitedtoavoidexcessivetemperatures of metallicconstructional parts. Thismeans that the untapped winding current stays constant up to the extreme plus tapping figure I C. This meansthat theprincipaltapping isa’maximumcurrenttapping’,see below. Therefore tolerances are necessary on certain guaranteed values.

All normative documents are subject to revision, and parties to agree- mentsbased on thispart of IECareencouraged to investigatethepossibility 600766-1 applying the most recent edition of the normative documents indicated below.

In measuring the cold resistance for the purpose of temperature-rise determination, special efforts shallbe made to determinetheaveragewindingtemperatureaccurately. Theterminal intended for connectiontoaneutralpoint of anetwork[IEV, modified] 3. This is dealt with in 5.

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The directions of induced voltages are indicated. If the delta winding is not taken out to three line terminals but only provided as a stabilizing winding, the symbol would indicate this by a plus sign. This subclause describes such arrangements. Windingresistance and windingtemperatureshall bemeasured at thesametime. Standard categories of tapping voltage variation.