BS/EN 50117-9-3-2019 pdf download.Coaxial cables Part 9-3: Sectional specification for coaxial cables for analogue and digital signal transmission – Indoor drop cables for systems operating at 5 MHz – 6 000 MHz.
Cables according to this standard are designed for an operating temperature range from – 40 °C to +70 ed and at frequencies between 5 MHz and 6 000 MHz.
When designing the cable, consideration should be given to the maximum admissible current stated in the detail specification. It is assumed that the raise of temperature of the inner conductor when submitted to the maximum current under nominal ambient conditions does not affect the mechanical and electrical properties of the cable.
Cables according to this standard may be operated at voltages ‘ 50 V AC or >75 V DC according to the detail specification of the manufacturer, However, these cables are not intended for direct connection to the mains electricity supply or other low impedance sources.
Cables according to this standard shall be designed according to EN 50290-2-1, Communication cables Part 2-1: Common design rules and construction. They shall be used according to EN 502904-1, Communication cables – Part 4-1: General considerations for the use of cables – Environmental conditions and safety aspects.
The use of cables according to this standard including delivery, storage and installation shall be in accordance with EN 50290-4-2. Communication cables – Part 4-2: General considerations for the use of cables – Guide to use, unless otherwise specified.
Cables according to this standard shall be tested for voltage withstanding. The test is performed between conductors and between the conductors or screen and the outer surface of the sheath.
When constructed in accordance with EN 50290-2-1 and EN 50117-1 and submitted to spark testing, CATV cables according to this standard may be installed together with Low Voltage cables –
All cables covered by this standard do not fall under the scope of the RED or the EMC directive. Nevertheless, transfer impedance and screening attenuation according to 5.1.3.6 and 5,1.3.7 shall be specified in the relevant detail specification. it the intended application of the cable is the use in combination with equipment under the RED or the EMC Directive.
4.2 Inner conductor
The conductor shall meet the requirements of 4.2 of EN 50117-1:2019. and shall be solid and may be plain or metal coated. Dimensions shall be in accordance with the detailed specification.
There shall be no joint made subsequent to the last drawing operation.
In case of metal coated conductor, consideration shall be taken for the compatibility of the connector.
4.3 Dielectric
The dielectric material(s) shall be in accordance with 4.3 of EN 50117-1:2019 and shall Consist of polyolefin materials, with EN 50290-2-37 (polyethylene), EN 50290-2-38 (polypropylene).Dimensions shall be in accordance with the detail specification.
Unless otherwise specified, the nominal diameter over the dielectric should be one of the preferred values, namely 3.7 mm, 4,8 mm and 7.2 mm,
For cables with smaller diameters, attention should be paid to the attenuation at 6 GHz, depending on the cable length.
1 This value is valid fof applicahons *ithout npac4y only, see also Table A, 1 concerning max DC cwrent.
BS EN 50117-9-3:2019
EN 50117-9-3:2019 (E)
4.4 Outer conductor or screen
The construction and material of the outer conductor (or screen) shall meet the requirements of 4.4 items b), 1) or 9) of EN 50117-1:2019. Where option b) Is used, a double braid layer is required.
For braid constructions or helically wound wires, the braid angle shall be between 15 and 45. The coverage factor shall be greater than or equal to 65 %, or, when the cable Is provided with a metal foil, greater than or equal to 25 %, These values are also valid for cables with two bidirectional layers of helically wound wires.
Dimensions shall be in accordance with the detail specification.
4.5 Filling compounds
Not applicable.
4.6 Moisture barriers
Not applicable.
4.7 Wrapping layers
Not applicable.
4.8 Sheath
Sheath material(s) shall be polyvinylchloride (PVC) meeting the requirements of the
EN 50290-2-22 or halogen free flame retardant (HFFR) materials meeting the requirements of
EN 50290-2-27.
The sheath shall also meet the requirements of 4.8 of EN 5011 7-1 :2019.
Sheath colour shall be agreed between the provider and the customer.
Dimensions and minimum wall thickness shall be in accordance with the detail specification.
4.9 Metallic protection
Not applicable.
4.10 Cable integral suspension strand (Messenger wire)
Not applicable.
4.11 Oversheath
Not applicable.
4.12 Fauna proofing
Not applicable
4.13 Chemical andlor environmental proofing
Not applicable.
4.14 Cable Identification
4.14.1 General
Cable identification shall be in accordance with 4.14 of EN 50117-1:2019.BS/EN 50117-9-3-2019 pdf download.