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prEN 17762 Viešoji apklausa

Komentavimo iki data 2026-05-19

Neorganinės trąšos. Vario kiekio nustatymas didelį azoto kiekį turinčiose amonio nitrato trąšose

This document specifies a method for the determination of the copper content in ammonium nitrate fertilizers of high nitrogen content. This document is applicable to the fertilizing products blends where a blend is a mix of at least two of the following components: fertilizers, liming materials, soil improvers, growing media, inhibitors, plant biostimulants, and where the following category: inorganic fertilizers is the highest % in the blend by mass or volume, or in the case of liquid form by dry mass. If inorganic fertilizer is not the highest % in the blend, the European Standard for the highest % of the blend applies. In case a fertilizing product blend is composed of components in equal quantity, the user decides which standard to apply. Variations in analytical methods for fertilizing product blends can lead to differing results as some components or matrix interactions can affect the outcome. Validation procedures have shown that developed standard methods are robust and reliable across diverse product compositions, but possible interferences and unexpected results when analysing fertilizing product blends are possible.

Skaityti, komentuoti projektą Peržiūrėti metaduomenis

prEN IEC 63115-2:2026 Viešoji apklausa

Komentavimo iki data 2026-04-03

Antriniai elementai ir baterijos su šarminiais arba kitokiais nerūgštiniais elektrolitais. Sandarintieji įkraunamieji nikelio-metališkojo hidrido elementai ir moduliai, naudojami pramonėje. 2 dalis. Sauga

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prEN IEC 61009-1:2026/prAA:2026 Viešoji apklausa

Komentavimo iki data 2026-04-08

Buitiniai ir panašios paskirties liekamąja srove valdomi jungtuvai su integruota apsauga nuo viršsrovių. 1 dalis. Bendrosios taisyklės

This document gives general requirements and tests for residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (hereafter referred to as RCBOs), for rated operational voltages not exceeding 440 V AC, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 125 A and rated short-circuit capacities not exceeding 25 000 A. RCBOs are intended to provide fault protection (previously referred to as protection against indirect contact), the exposed conductive parts of the installation being connected to an appropriate earth electrode. These devices are also intended to protect against overcurrents in the wiring installations of buildings and similar applications. They are also intended to be used to provide protection against fire hazards due to a persistent earth fault current. RCBOs having a rated residual operating current not exceeding 30 mA are used for fault protection and additional protection in the case of failure of the protective provisions against electric shock. This document applies to RCBOs performing simultaneously the functions of detection of the residual current, of comparison of the value of this current with the residual operating value and of opening of the protected circuit when the residual current exceeds this value. These devices also perform the function of making, carrying and breaking overcurrents under specified conditions. RCBOs are intended to be operated by ordinary or uninstructed persons and designed not to require maintenance. The requirements of this document apply for standard conditions (see 7.1). Additional requirements can be necessary for RCBOs used in locations which have severe environmental conditions. RCBOs within the scope of this document are intended for use in an environment with pollution degree 2 (see 7.3). RCBOs are suitable for isolation. Special precautions (e.g. surge protective devices) can be necessary when excessive overvoltages are likely to occur on the supply side (for example in the case of supply through overhead lines, see IEC 60364-4-44 and IEC 60364-5-53). RCBOs, with the exception of those with an uninterrupted neutral, are suitable for use in IT systems. RCBOs of the general type are resistant to current surges, including the case where surge voltages (as a result of switching transients or induced by lightning) cause loading currents in the installation without occurrence of flashover. RCBOs of type S are considered to be sufficiently resistant against unwanted tripping even if the surge voltage causes a flashover and a follow-on current occurs. This document also applies to RCBOs obtained by the assembly of an adaptable residual current device with a circuit-breaker. The mechanical assembly is intended to be effected in the factory by the manufacturer, or on site, in which case the requirements of Annex G apply. It also applies to RCBOs having more than one rated current, provided that the means for changing from one discrete rating to another is not accessible in normal service and that the rating cannot be changed without the use of a tool. Particular requirements are necessary for RCBOs intended to be used at frequencies other than 50 Hz or 60 Hz. For RCBOs incorporated in, or intended for association with socket-outlets only, the requirements of this document can be used, as far as applicable, in conjunction with the requirements of IEC 60884-1 or the national requirements of the country where the product is placed on the market. This document does not apply to: ....

Skaityti, komentuoti projektą Peržiūrėti metaduomenis

prEN IEC 61850-7-440:2026 Viešoji apklausa

Komentavimo iki data 2026-04-22

Elektros tiekimo sistemų automatizavimo ryšių tinklai ir sistemos. 7-440 dalis. Pagrindinė ryšių struktūra. Suderinamos loginių mazgų ir duomenų objektų klasės. Elektros energijos kokybinių charakteristikų matavimas

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prEN IEC 62133-2:2026 Viešoji apklausa

Komentavimo iki data 2026-05-08

Akumuliatoriai ir baterijos su šarminiais arba kitokiais nerūgštiniais elektrolitais. Saugos reikalavimai, keliami nešiojamiesiems sandariesiems akumuliatoriams ir iš jų sudarytoms baterijoms, naudojamiems nešiojamuosiuose aparatuose. 2 dalis. Ličio sistemos

Skaityti, komentuoti projektą Peržiūrėti metaduomenis

prEN ISO 17268-2 Viešoji apklausa

Komentavimo iki data 2026-05-19

Sausumos transporto priemonių pildymo dujiniu vandeniliu jungtys. 2 dalis. Didesnis kaip 120 g/s srauto našumas (ISO/DIS 17268-2:2026)

This document defines the design, safety and operation characteristics of gaseous hydrogen land vehicle (GHLV) refuelling connectors having flow capacities greater than 120 g/s. GHLV refuelling connectors consist of the following components, as applicable: — receptacle and protective cap (mounted on vehicle); — nozzle; — communication hardware. This document is applicable to refuelling connectors which have nominal working pressures or hydrogen service levels up to 70 MPa. This document is not applicable to refuelling connectors dispensing blends of hydrogen with natural gas.

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