Standards World

ISO 48:2010 pdf free download – Rubber, vulcanized or thermoplastic – Determination of hardness (hardness between 10 IRHD and 100 IRHD)

ISO 48:2010 pdf free download - Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD). d) High-hardness rubbers (method H). Three rubber compounds, nominal hardness range 85 IRHD to 100 IRHD,...

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IEC 60947-6-2:2020 pdf free download – Low-voltage switchgear and controlgear

IEC 60947-6-2:2020 pdf free download - Low-voltage switchgear and controlgear 5.4.2 Assignment of utilization categories based on the results of tests a) A CPs which has been tested for one utilization category or at any combination of...

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ISO 00048:2010 pdf free download – Rubber, vulcanized or thermoplastic – Determination of hardness (hardness between 10 IRHD and 100 IRHD)

ISO 00048:2010 pdf free download - Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD). 6.2 Methods N, H, L and M 6.2.1 General The test pieces shall have their upper...

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IEC 60947-4-3:2020 pdf free download – Low-voltage switchgear and controlgear

IEC 60947-4-3:2020 pdf free download - Low-voltage switchgear and controlgear 8.1.1General Subclause 8.1.1 of IEC 60947-1:2020 applies with the following addition. Measures shall be provided to reduce the likelihood of injury and property damage，underinstallation，maintenance，normal operation conditions，abnormal operation...

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IEC 60947-4-2:2020 pdf free download – Low-voltage switchgear and controlgear

IEC 60947-4-2:2020 pdf free download - Low-voltage switchgear and controlgear 5.3.5.4.1 Starting characteristics of squirrel cage and hermetic refrigerationmotors a) One direction of rotation with the inclusion of phase-control capability to provide any combination of controlled acceleration...

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ISO 37:2011 pdf free download – Rubber, vulcanized or thermoplastic一 Determination of tensile stress-strain properties

ISO 37:2011 pdf free download - Rubber, vulcanized or thermoplastic一 Determination of tensile stress-strain properties. 11 Marking of dumb-bell test pieces If using a non-contact extensometer, mark the dumb-bell test pieces with two reference marks to define...

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IEC 60947-4-2:2011 pdf free download – Low-voltage switchgear and controlgear

IEC 60947-4-2:2011 pdf free download - Low-voltage switchgear and controlgear 1 Scope This standard applies to a.c. semiconductor motor controllers and starters,which may includea series mechanical switching device, intended to be connected to circuits, the rated voltageof...

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ISO 15:2011 pdf free download – Rolling bearings一Radial bearings一 Boundary dimensions, general plan

ISO 15:2011 pdf free download - Rolling bearings一Radial bearings一 Boundary dimensions, general plan. The object of the general plan (this International Standard) is to restrict the number of radial bearing sizes enough to ensure economic production, yet...

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IEC 60947-3:2020 pdf free download – Switches, disconnectors, switch-disconnectors and fuse-combination units

IEC 60947-3:2020 pdf free download - Switches, disconnectors, switch-disconnectors and fuse-combination units 1 Scope This part of lEC 60947 applies to switches,disconnectors，switch-disconnectors and fuse-combination units and their dedicated accessories to be used in distribution circuits and motorcircuits...

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ISO 8:2019 pdf free download – Information and documentation一 Presentation and identification of periodicals

ISO 8:2019 pdf free download - Information and documentation一 Presentation and identification of periodicals. unitorm esource i.ocacor URL mechanism for identifying resources on the internet such as webpages, by specifying the address of the resource and the...

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