BS EN 4604-009-2017 pdf free download.Aerospace series — Cable, electrical, for signal transmission Part 009: Cable, coaxial, light weight, 50 ohms, 1 80 °C, type KW (light WN) — Product standard
This European Standard specifies the required characteristics of a light weight coaxial cable, 50 Ω,type KW for use in aircraft electrical systems at operating temperature between −55 °C and 180 °C and specially for high frequency up to 6 GHz. Nevertheless, if needed, −65 °C is also acceptable as shown by rapid change of temperature test.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 3475-100 (all parts), Aerospace series — Cables, electrical, aircraft use — Test methods — Part 100:General
EN 4434, Aerospace series — Copper or copper alloy lightweight conductors for electrical cables — Product standard (Normal and tight tolerances)
EN 4604-001, Aerospace series — Cable, electrical, for signal transmission — Part 001: Technical specification
EN 4604-002, Aerospace series — Cable, electrical, for signal transmission — Part 002: General TR 6058, Aerospace series — Cable code identification list 1)
ASTM-B566, Standard specification for copper-clad aluminium wire 2)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 3475-100 and the following apply.
3.1 Epsilon (ε)
value of dielectric constant
4 Required characteristics
4.1 Material, constructions, dimensions and mass
4.1.1 Material
See Table 1.
4.2 General characteristics
— operating temperature: −55 °C to 180 °C,
— minimum bend radius:
— in static use: 80 mm,
— in dynamic use: 120 mm.
— performances are guaranteed up to 6 GHz.
4.3 Electrical characteristics
— characteristic impedance: Zc = (50 ± 3) Ω at 200 MHz,
— capacitance per unit length: Cp = 88 pF/m max.,
— transfer impedance up to 400 MHz: 20 mΩ/m max.,
— operating voltage: 1 000 V r.m.s. max.,
— maximum power handling (at sea level): see Table 3 and Figure 2,
— attenuation versus frequency: see Table 3 and Figure 2,
— velocity of propagation ≥ 243 000 km/s.
6 Designation
EXAMPLE
Description block
CABLE, COAXIAL
Identity block
EN4604-009KW
Number of this standard
Cable code (see TR 6058)
NOTE If necessary, the code I9005 shall be placed between the description block and the identity block.
7 Identification and marking
See EN 4604-002.
Colour of the marking shall be black or green, or any legible colour if marking on tape between shield and
jacket.
8 Colours of components and jacket
See 4.1.1, Table 1.
9 Packaging, labelling and delivery lengths
9.1 Packaging and labelling
See EN 4604-001.
9.2 Delivery lengths
Delivery on cable drum (about 175 m).
Minimum length of each piece: 50 m.
10 Technical specification
See EN 4604-001.BS EN 4604-009 pdf download