Normy

Obsah

ČSN EN 4611-005 This European Standard specifies the characteristics of UV laser printable, silver plated copper conductor electrical cables Crosslinked Ethylene Tetra Fluoro Ethylene co-polymer (XLETFE) family for use in the on-board electrical systems of aircraft operating at temperatures between - 65 °C and 150 °C. The voltage rating is 600 V rms at sea level. This insulation system has been used in aerospace applications using 115 V ac (phase-to-neutral) 400 Hz and 28 V dc. Verification of the suitability of cables for use in other electrical systems is the responsibility of the user. These cables are only suitable for airframe use with additional protection against mechanical abuse. In case of conflict between this standard and other referenced documents the requirements of this standard shall take precedence.

Obsah

ČSN EN 2591-228 This European Standard describes the procedure to measure the withdrawal force between the ferrule of an optical contact and the resilient alignment sleeve located inside the connector. This method is suitable for use for resilient alignment sleeve qualification. It shall be used together with EN 2591-100.

Obsah

ČSN EN 4708-102 This European Standard specifies the required characteristics for a heat-shrinkable, very flexible polymer sleeving for use in aircraft electrical systems at operating temperatures between -75 °C to 150 °C. This sleeving has very good flexibility, is flame retarded and has a thick wall for mechanical protection. It is suitable for use as cable protection in areas where wiring is subject to contamination by aircraft fuels and hydraulic fluids. These sleevings are normally supplied with internal diameters up to 102 mm for shrink ratios of 2:1. They are available in black only. Sizes other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 2, 3 and 4 except for dimensions and mass.

Obsah

ČSN EN 4708-106 This European Standard specifies the required characteristics for four types of heat-shrinkable limited fire hazard sleevings for use in aircraft electrical systems at operating temperatures between - 30 °C and 105 °C. This sleeving is flexible, flame retarded and emits minimum smoke, gases and corrosive by-products when exposed to fire. It is available with various wall thicknesses and also in a higher shrink ratio according to the application and degree of mechanical protection required. It is suitable for use (e.g. as cable protection) in areas where smoke, gases or corrosive by-products would constitute a particular hazard. Type A Thick wall shrink ratio 2:1 and is normally supplied with internal diameters up to 102,0 mm Type B Medium wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 60,0 mm Type C Thick wall, shrink ratio 2:1 and is normally supplied with internal diameters up to 51,0 mm Type D Medium wall, shrink ratio 3:1 and normally supplied with internal diameters up to 40,0 mm The standard colour is black. Sizes or colours other than those specifically listed in this standard may be available. These items shall be considered to comply with this standard if they comply with the property requirements listed in Tables 5, 6 and 7 except for dimensions and mass.

Obsah

ČSN EN 3745-202 This European Standard specifies several methods for measuring the diameter of an optical fibre or cable, the non-circularity and the concentricity of the fibre core/cladding on an optical fibre.

Obsah

ČSN EN 2564 This European Standard specifies the methods for determining the fibre content by volume and mass and, by correlation, the resin content by volume and mass and void content by volume, of carbon fibre laminates, for aerospace applications.

Obsah

ČSN EN ISO 12215-1 This part of ISO 12215 is applicable to thermosetting resins and glass-fibre reinforcement used in the construction of small craft with a length of the hull of up to , in accordance with ISO 8666. This part of ISO 12215 specifies the minimum requirements for material properties of glass reinforcement and resin matrix and the reference laminate made thereof. This part of ISO 12215 may be applicable to materials other than those specified, provided that the minimum requirements and properties of the reference laminate are met. NOTE: The underlying reason for preparing this International Standard is to harmonize existing standards and recommended practices for loads on the hull and the dimensioning of small craft because they differ too considerably and thus limit general worldwide acceptability of boats.

Obsah

ČSN EN ISO 12215-2 This part of ISO 12215 specifies requirements for core materials for structural use and materials that are embedded in sandwich construction. It is applicable to small craft with a hull length (LH) according to ISO 8666 of up to 24 m. NOTE: The underlying reason for preparing this part of ISO 12215 is that sandwich structures of small craft require careful selection of core materials from a multitude of choices, and that the manufacturing has to follow certain procedures to achieve the intended long-term durability under the expected loads and environmental conditions.

Obsah

ČSN EN ISO 16180 This International Standard specifies requirements and gives guidelines for the placement, installation and visibility of navigation lights as described in COLREG for recreational craft of less than 24 m in length of hull, as described in ISO 8666. Annex A lists additional information to be included in the owner's manual. NOTE: Other national regulations may apply for craft on certain waters.

Obsah

ČSN EN IEC 60034-14 ed. 3 Tato část souboru norem stanovuje postupy pro měření vibrací při výrobní přejímací zkoušce a mezní hodnoty vibrací pro určité elektrické stroje za stanovených podmínek, jsou-li tyto stroje odpojeny od jakékoliv zátěže nebo hnacího stroje. Platí pro stejnosměrné a trojfázové střídavé stroje s výškou osy od 56 mm a se jmenovitým výkonem do 50 MW, s provozními otáčkami od 120 min-1 do 15 000 min-1. Tato norma neplatí pro stroje namontované in situ (na pracovním místě), pro trojfázové komutátorové motory, jednofázové stroje, trojfázové stroje pracující v jednofázových sítích, svislé hydrogenerátory, turbogenerátory s výkonem vyšším než 20 MW a stroje s magnetickými ložisky nebo sériové komutá-torové stroje.

Obsah

ČSN EN 50069 This document applies to welded composite enclosures of cast and wrought aluminium alloy pressurized with dry air, inert gases (e.g. sulphur hexafluoride or nitrogen or a mixture of such gases), used in indoor and outdoor installations of high-voltage switchgear and controlgear with rated voltages above 1 kV, where the gas is used principally for its dielectric and/or arc-quenching properties with rated voltages

Obsah

ČSN EN IEC 61189-2-630 This document specifies a test method to determine the amount of water absorbed by metal-clad laminates after conditioning in a pressure vessel for 1 h, 2 h, 3 h, 4 h or 5 h.