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This portion of IEC 60645 is intended for instruments predominantly used for measuring acoustic impedance or admittance within the human external acoustic meatus, utilizing a specified probe tone. It is acknowledged that alternative probe signals may also be employed. The standard delineates the characteristics that manufacturers must specify, establishes performance criteria for three different types […]
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IEC 60644:2009 primarily pertains to fuse-links designed for use with motors that are started directly on-line within alternating current systems operating at 50 Hz and 60 Hz. NOTE: This specification can also be applicable for motors with assisted starting; however, special attention should be given to the selection of the fuse-link’s rated current (refer to
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This section of IEC 60641 pertains to pressboard and presspaper intended for electrical applications. It does not cover laminated materials. This part outlines the testing methods to be employed when evaluating pressboard and presspaper to ensure compliance with the requirements specified in the specification sheets of Part 3. NOTE: Throughout this standard, references are made
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This section of IEC 60641 provides definitions pertinent to the classification of pressboard and presspaper used for electrical applications, as well as the general requirements that these materials must meet.
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This section of IEC 60603-7 addresses 8-way unshielded free and fixed connectors, with the aim of defining the standard dimensions, mechanical, electrical, and environmental attributes, as well as the relevant tests for the IEC 60603-7-x connector series. These connectors are designed to be intermateable (compliant with IEC 61076-1, Level 2) and are compatible for use
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IEC 60599:2007 serves as a guide for interpreting the concentrations of dissolved gases or free gases to assess the condition of oil-filled electrical equipment in operation and to recommend future actions. It is applicable to electrical devices filled with mineral insulating oil and insulated with cellulosic paper or pressboard-based solid insulation. The guide provides information
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IEC 60587:2007 outlines two test methods for assessing electrical insulating materials intended for use in harsh ambient conditions at power frequencies (ranging from 45 Hz to 65 Hz). The evaluation focuses on measuring resistance to tracking and erosion using a liquid contaminant and inclined plane specimens. The two methods are as follows: Method 1: constant
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This section of IEC 60584 outlines the manufacturing tolerances for extension and compensating cables (excluding mineral insulated cables) supplied directly to users in industrial processes. These tolerances are established based on the e.m.f.-temperature relationship defined in Part 1 of the standard. The document also describes the method for identifying insulated thermocouple extension and compensating cables,
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IEC 60568:2006 pertains to on-line in-core neutron detectors, along with their associated components and instrumentation, which are essential for reactor safety, including protection, information, or control purposes. The types of detectors commonly employed include direct current ionization chambers, fission ion chambers, and self-powered neutron detectors. This standard offers guidance for designing in-core instrumentation aimed at
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This section of IEC 60534 introduces a method for forecasting the noise produced within a control valve due to liquid flow, as well as the noise levels that are measured downstream of the valve and beyond the pipe. The noise can originate from both typical turbulence and the cavitation of the liquid within the valve.
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