BS EN 60368-4:2001

Clause
1 General
   1.1 Scope
   1.2 Normative references
2 Preferred values for ratings and guidance on detail
   specifications
   2.1 Preferred values for ratings and
        characteristics
   2.2 Information to be prescribed in detail
        specifications
3 Capability approval
   3.1 Eligibility for capability approval
   3.2 Structural similarity
   3.3 Procedures for capability approval
   3.4 Capability manual
   3.5 Capability qualifying components (CQC)
   3.6 Inspection requirements for CQCs
   3.7 Programme for capability approval
   3.8 Capability approval report
   3.9 Abstract of description of capability
   3.10 Modifications likely to affect the capability
        approval
   3.11 Initial capability approval
   3.12 Maintenance of capability approval
   3.13 Rework and repair work
   3.14 Quality conformance inspection
   3.15 Screening procedures
4 Test and measurement procedures
Annex A (normative) Example layout of an abstract of
        description of capability
Annex B (normative) Layout of the front page of a CQC
        specification for process control
Annex C (normative) Layout of the front page of a CQC
        specification to demonstrate boundary or limit
Annex ZA (normative) Normative references to
        international publications with their
        corresponding European publications

Applicable to piezoelectric filters as custom-built products or as standard catalogue whose quality is assessed on the basis of capability approval. It also specifies the preffered ratings and characteristics, having appropriate tests and measuring methods.

Specifies the requirements of enamelled round copper winding wire of class 180 with a dual coating. The underlying coating is based on polyester or polyesterimide resin, which may be modified providing it retains the chemical identity of the original resin and meets all specified wire requirements. The superimposed coating is based on polyamide resin. Class 180 is a thermal class that requires a minimum temperature index of 180 and a heat shock temperature of at least 200°C. The temperature in degrees Celsius corresponding to the temperature index is not necessarily that at which it is recommended that the wire be operated and this will depend on many factors, including the type of equipment involved. The range of nominal conductor diameters covered by this standard is as follows: - grade 1: 0,050 mm up to and including 3,150 mm; - grade 2: 0,050 mm up to and including 5,000 mm; - grade 3: 0,250 mm up to and including 1,600 mm. The nominal conductor diameters are specified in Clause 4 of IEC 60317-0-1. The main changes with respect to the previous edition are listed below: - new requirements for appearance, Subclause 3.2, added; - breakdown voltage values, former Table 3, replaced with a reference to IEC 60317-0-1; - new pin hole test, Clause 23, added.