IEC 61196-3:1998 pdf download – Radio frequency cables -Part 3: Sectional specification for coaxial cables for local area networks

IEC 61196-3:1998 pdf download – Radio frequency cables -Part 3: Sectional specification for coaxial cables for local area networks.
This sectional specification specifies requirements for radio frequency coaxial cables for local area networks.
The object of this sectional specification is to prescribe recommended ratings and characteristics and to select from the generic specification the appropriate quality assessment procedures. test and measuring methods, and to give general performance requirements for coaxial cables for local area networks plus complementary test methods. Test severitpes and requirements prescribed in detail specifications referring to this sectional specification should be of equal or higher performance levels.
When the requirements of IEC 61196-I and of this sectional specitbcation conflict with each other, this sectional specification shall prevail.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text. constitute provisions of this part of IEC 61196. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 61196 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of lEO and ISO maintain registers of currently valid International Standards
lEO 60028:1925, International standard ol resistance tar copper
IEC 60050(461 ):l 994, International Electrotechnical Vocabulary (1EV) — Chapter 461: Elecfric cables
lEO 60169, Radio’trequency connectors
lEO 60304:1982, Standard colours for insulation br low4requency cables and wires
lEO 60332-I :1993, Tests on electr,t cables under tire conditions — Part 1: Test on a single vertical insulated wire or cable
lEO 61196-1:1995, Radio-frequency cables — Part I: Generic specification: General, detinitions. requirements and test methods
2.3 Inner conductor
2.3.1 Conductor material
The inner conductor shall consist of plain or tinned annealed copper uniform in quality and free from defects.
The properties of the copper shall be in accordance with IEC 60028 and if the inner conductor is tinned, It shall be tested In accordance with lEG 61196-1.5.5.2.1.
2.3.2 Conductor construction
The construction of the Inner conductor shall be as specified In the relevant detail specification.
Where the inner conductor consists of a single wire there shall be no joints in the wire made after the last drawing operation.
Joints in individual strands of a stranded conductor shall be cold pressure welded, brazed or silver soldered using a non-acid flux such that the strand diameter shall not be increased.
No joint in an individual strand shall be within 0.3 m of a joint in any other individual strand.
2.4 DIelectric
The type of dielectric required for each cable shall be specified in the relevant detail specification.
The diameter over dielectric, the ovality and the eccentricity shall be given in the relevant detail specification.
2.5 Outer conductor or screen
The construction and material of the outer conductor and/or screen shall be as specified in the relevant detail specification.
The copper braid wires shall be uniform in quality and free from defects.
The properties of the copper shall be in accordance with IEC 60028, and if the copper wire is tinned, it shall be tested In accordance with IEC 61196-1. 5.5.2.1.
The outer conductor or screen may be;
a) a braid of plain or tinned annealed copper wires. Joints in the braiding wires shall be soldered, twisted or woven in and there shall be no joint in the complete braid. The braid shall be evenly applied. The filling factor shall be specified in the relevant detail specification;
b) a double braid of plain or tinned annealed copper wires. Joints in the braiding wires shall be soldered, twisted or woven in and there shall be no joint in the complete braid, The braid shall be evenly applied. The filling factor shalt be specified in the relevant detail specification;
C) a layer of metallized plastic film applied with a sufficient overlap, bonded or not bonded, covered with a tinned copper braid when the metal layer is aluminium and a plain copper braid when the metal layer is copper. Joints in the braiding wires shall be soldered, twisted.