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This segment of IEC 60076 outlines the requirements for power transformers to withstand external short circuits without damage to their effects. It details the calculation procedures used to demonstrate the thermal capacity of a power transformer to withstand such overcurrents, as well as both the specialized test and theoretical evaluation methods employed to verify its […]
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This section of IEC 60068 defines a testing method to assess the capability of components or equipment to endure conditions of high humidity during transportation, storage, and usage. The purpose of this standard is to evaluate the impact of high humidity at a constant temperature, without condensation, on a specimen over a specified duration. It
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Section T of IEC 60068 details Test T, which is relevant to devices equipped with leads. The soldering tests for surface mount devices (SMDs) are detailed in IEC 60068-2-58. The standard offers procedures for assessing the solderability and resistance to soldering heat of components used in applications that employ solder alloys, including eutectic or near-eutectic
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This International Standard establishes a series of preferred values for the resistance of resistors and the capacitance of capacitors. Defining these series with a specific numeric resolution is essential for the proper marking and coding of capacitors and resistors, as outlined in IEC 60062. NOTE: The number series defined in this standard are derived from progressive
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This global standard defines marking codes for resistors and capacitors, as well as indexes for the dielectric material and electrodes of plastic film and paper capacitors. Clause 3 of the standard provides a color coding system for fixed resistors, designed to be used in conjunction with the values from the E6 to E192 series, as
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IEC 60055-1:2005 outlines the testing requirements for impregnated paper-insulated metal-sheathed cables (excluding gas-pressure and oil-filled cables) with rated voltages ranging from U0/U 0.6/1 kV to 18/30 kV. It also includes type tests for accessories designed for cables with rated voltages from U0/U 3.6/6 kV to 18/30 kV. Section 7 details the testing criteria for type
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This section of IEC 60050 provides the general terminology used in the field of conformity assessment, as well as general terms relevant to specific applications and associated technologies. It holds the status of a horizontal standard in accordance with IEC Guide 108, Guidelines for Ensuring Coherence of IEC Publications – Application of Horizontal Standards. The
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This section of IEC 60050 provides the standard terminology employed in polyphase circuits and systems. The terminology aligns with that established in the other specialized sections of the International Electrotechnical Vocabulary (IEV).
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The IEC 60034 standard: Outlines testing methodologies for the assessment of the sound power level of rotating electrical machines; Establishes the maximum A-weighted sound power levels for the factory acceptance testing of network-supplied, rotating electrical machines in accordance with IEC 60034-1. These machines are designed with cooling methods in line with IEC 60034-6 and protection
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This section of IEC 60034 pertains to three-phase low-voltage cage induction motors with frame sizes ranging from 56 to 400, as outlined in IEC 60072-1. The standard sets forth procedures for deriving values for components of single-phase equivalent circuit diagrams through testing and defines the standard elements of these diagrams.
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