Normy

Obsah

ČSN EN ISO 9073-5 This document specifies a method for determining the resistance to mechanical penetration of nonwoven fabrics by a ball of a given diameter. The method is primarily designed to be used on nonwovens with some degree of elasticity, for which a regular burst test does not apply.

Obsah

ČSN EN ISO 17831-2 This document specifies a method for determination of the mechanical durability of briquettes. The mechanical durability is a measure of the resistance of compressed fuels towards shocks and/or abrasion as a consequence of handling and transportation.

Obsah

ČSN EN 16511+A1 This document specifies the characteristics of multilayer mechanical locked floor covering with a wear-resistant and decorative surface layer supplied in panels (either tile or plank form). The floor panels are considered suitable for domestic and commercial levels of use and designed for floating installation. This document does not apply to resilient floor panels for loose-laying according to EN ISO 20326, to multilayer wood floorings according to EN 13489, to wood veneer floor coverings according to EN 14354, to laminate floor covering according to EN 13329, EN 14978 and EN 15468 nor to products specified in EN ISO 10581, EN ISO 10582, EN ISO 24011, EN 12104 and ISO 14486. This document is applicable to areas which are subject to frequent wetting, e.g. bathrooms, laundry rooms or saunas, only if specified by the producer. This document also includes requirements for marking and packaging. In Annex A (informative), optional properties are given. In Annex B (informative), a test method for the classification of the flexibility is given.

Obsah

ČSN EN ISO 16831 Tento dokument specifikuje zkušební metody a kritéria přípustnosti v mezích frekvenčního rozsahu 0,5 MHz až 15 MHz pro posouzení výkonu zařízení určených pro stanovení tloušťky pomocí ultrazvuku impulzně odrazovou technikou, např. podle normy ISO 16809. Tento dokument specifikuje pouze ověření požadovaná pro stanovování tloušťky. Tento dokument se vztahuje na přístroje s číslicovým displejem a přístroje s A-zobrazením, z nichž každý používá buď sondy s jedním měničem nebo dvojité sondy. Zkoušky popsané v tomto dokumentu lze použít k ověřování zařízení, na která se vztahují normy ISO 22232-1 a ISO 22232-2, pokud se používají pro stanovení tloušťky.

Obsah

ČSN EN ISO 7041 This document specifies the characteristics of prevailing torque hexagon high nuts (with non metallic insert), in steel and stainless steel, with metric coarse pitch thread M5 to M39, and with product grades A and B. NOTE - These nuts are designed with an overall height equal to mmin (as specified in ISO 898-2 and ISO 4033 for style 2) plus the prevailing torque feature. The height of the prevailing torque feature (hmax - mmin) for the non-metallic insert is identical for regular, high and thin nuts for a given diameter. If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-2 or ISO 3506-2.

Obsah

ČSN EN ISO 7719 This document specifies the characteristics of prevailing torque (all metal) hexagon regular nuts, in steel and stainless steel, with metric coarse pitch thread M5 to M39, and with product grades A and B. NOTE - These nuts are designed with an overall height hmin = mmin (as specified in ISO 898-2 and ISO 4032 for style 1) plus the prevailing torque feature. hmax has been established in function of hmin; therefore, the tolerance (hmax - hmin) does not follow the ISO code system for tolerances (IT system). If in certain cases other specifications are requested, property classes and stainless steel grades can be selected from ISO 898-2 or ISO 3506-2.

Obsah

ČSN EN ISO 284 This document specifies the maximum electrical resistance of a conveyor belt and the corresponding test method. The test is intended to ensure that the belt is sufficiently conductive to avoid the accumulation of electrical static charge which can be developed during service use. This document is not suitable or applicable to light conveyor belts as described in ISO 21183-1, the static electrical properties of which are measured by ISO 21178.

Obsah

ČSN EN ISO 23308-6 This document specifies the methods of energy consumption measurement for the following type of industrial trucks as defined in ISO 5053-1: - stacking high-lift straddle carrier (hereafter referred to as straddle carrier), as defined in ISO 5053-1:2020, 3.19.

Obsah

ČSN EN ISO 23308-3 This document specifies the method of energy consumption measurement for the following types of industrial trucks as defined in ISO 5053-1: - variable-reach container handler; - counterbalance container handler.

Obsah

ČSN EN 3719 This document specifies the dimensions, linear resistance, mechanical characteristics, construction and mass of conductors in aluminium or aluminium alloy for electrical cables for aerospace applications. It applies to stranded conductors with nominal cross-sections of 5 mm2 to 115 mm2 inclusive.

Obsah

ČSN EN 2996-004 This document specifies the characteristics of three-pole circuit breakers, temperature compensated with a rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between -55 °C and 125 °C for ratings 15 A and at an altitude of 22 000 m max. These circuit breakers are operated by a push-pull type single pushbutton (actuator), with delayed action "trip-free" tripping with a signal contact which is open when main contacts are closed, and inversely. They will continue to function up to the short-circuit current.

Obsah

ČSN EN 2996-005 This document specifies the characteristics of three-pole circuit breakers, temperature compensated with a rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between -55 °C and 125 °C for ratings 15 A and at an altitude of 22 000 m max. These circuit breakers are operated by a push-pull type single push button (actuator), with delayed action "trip-free" tripping with a polarized signal contact which is open when main contacts are closed, and inversely. They will continue to function up to the short-circuit current.