Normy

Obsah

ČSN EN IEC 63522-54 This part of IEC 63522 is used for testing all kinds of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. NOTE - Examples for electrical relays in the sense of this document include electromechanical relays, reed relays, reed contacts, reed switches, solid state relays, time relays and technology combinations of these. This document defines a standard test method for critical DC load current test.

Obsah

ČSN EN IEC 63522-33 This part of IEC 63522 is used for testing all kind of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. NOTE - Examples for electrical relays in the sense of this document include electromechanical relays, reed relays, reed contacts, reed switches, solid state relays, time relays and technology combinations of these. This document provides test methods to ensure that the connection between an earthing terminal and parts required to be connected thereto is of low resistance.

Obsah

ČSN EN IEC 63522-21 This part of IEC 63522 is used for testing along with the appropriate severities and conditions for measurements and tests designed to assess the ability of DUTs to perform under expected conditions of transportation, storage and all aspects of operational use. This document defines a standard test method for evaluation of resistance against high temperature for long periods.

Obsah

ČSN EN IEC 63522-34 This part of IEC 63522 is used for testing all kinds of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. NOTE - Examples for electrical relays in the sense of this document include electromechanical relays, reed relays, reed contacts, reed switches, solid state relays, time relays and technology combinations of these. This document provides tests to ensure that a relay is suitable for use when subjected to contamination by fluids found in aerospace applications and similar. This test applies to RT III to RT V relays only.

Obsah

ČSN EN IEC 63522-31 This part of IEC 63522 is used for testing all kind of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. NOTE - Examples for electrical relays in the sense of this document include electromechanical relays, reed relays, reed contacts, reed switches, solid state relays, time relays and technology combinations of these. This document defines a standard test method to investigate the effect of remanence in the magnetic circuit of relays with DC coil.

Obsah

ČSN EN 18079 This document specifies the determination of free melamine in coated and uncoated wood-based-panels. NOTE 1 - It is also applicable to other wood-based products, to other solid products e.g. impregnates or decorative paper and to liquid materials. The determination of melamine is performed by extraction using dimethyl sulfoxide (DMSO) and subsequent high-performance liquid chromatography (HPLC) analysis and ultraviolet (UV) detection. NOTE 2 - For determination of melamine in foodstuff, EN 16858 is applicable. For determination of melamine in animal feeding stuffs, EN 17212 is applicable. For determination of melamine in textiles, EN ISO 1833-26 is applicable.

Obsah

ČSN EN ISO 3035 This document specifies a method for the determination of the flat crush resistance of corrugated fibreboard used in the manufacture of shipping containers. This document is applicable to single-faced and single-wall (double-faced) corrugated fibreboard. This document is not applicable to double-wall (double-double-faced) corrugated fibreboard and to microflute corrugated fibreboard, since the end-point of the test is not clearly defined or observable.

Obsah

ČSN EN 13938-4 This document specifies a method for the determination of the burning rate for solid gun propellants and black powder. This document does not apply to solid rocket propellants or powder cakes.

Obsah

ČSN EN 13938-3 This document specifies a test method for the verification of the transition from deflagration to detonation of solid gun propellants. This document applies to solid gun propellants with a particle size of

Obsah

ČSN EN 13938-5 This document specifies a method for the verification of safe functioning of solid rocket propellants used in small rocket motors. The test method provides for an indirect assessment of the existence of unintentional voids and fissures of solid rocket propellants that could dangerously affect the functioning of rocket motors. This document also provides an informative list of non-destructive testing (NDT) methods for detecting voids and fissures of solid rocket propellants used in large rocket motors containing. This document does not apply to solid gun propellants, black powder or powder cakes.