IEC 60227 pdf download – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 6: Lift cables and cables for flexible connections

IEC 60227 pdf download – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 6: Lift cables and cables for flexible connections
1Scope
This part of lEC 60227 details the particular specifications for both circular and flat lift cablesand cables for flexible connections of rated voltages up to and including 450/750 V.
Each cable complies with the appropriate requirements given in lEC 60227-1,and with theparticular requirements of this part of IEC 60227.
Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this part of lEC 60227.For dated references,subsequent amend-ments to， or revisions of， any of these publications do not apply. However，parties toagreements based on this part of lEC 60227 are encouraged to investigate the possibility ofapplying the most recent editions of the normative documents indicated below. For undatedreferences, the latest edition of the normative document referred to applies. Members of lECand lso maintain registers of currently valid lnternational Standards.
IEC 60096-0-1:1990，Radio-frequency cables – Part 0-1: Guide to the design of detailedspecifications – Coaxial cables 1′
IEC 60227-1:1993，Polyvinyl chloride insulated cables of rated voltages up to and including450/750 v – Part i: General requirements 2
IEC 60227-2:1997，Polyvinyl chloride insulated cables of rated voltages up to and including450/750 v – Part 2: Test methods
IEC 60228:1978,Conductors of insulated cables
IEC 60332-1:1993，Tests on electric cables under fire conditions – Part 1: Test on a singlevertical insulated wire or cable
IEC 60502-1:1997，Power cables with extruded insulation and their accessories for ratedvoltages from 1 kv(Um = 1,2 kV)up to 30 kV(Um = 36 kV) -Part 1: Cables for rated voltagesof 1 kv (um = 1,2 kv) and 3 kv (um = 3,6 kv)y 3
IEC 60811-1-1:1993,Common test methods for insulating and sheathing materials of electriccables – Part 1: Methods for general application – Section 1: Measurement of thickness andoverall dimensions – Tests for determining the mechanical properties
IEC 60811-1-2:1985,Common test methods for insulating and sheathing materials of electriccables – Part 1 : Methods for general application – Section 2:Thermal ageing methods
IEC 60811-1-4:1985,Common test methods for insulating and sheathing materials of electriccables – Part 1 : Methods for general application – Section 4 : Test at low temperature
lEC 60811-3-1:1985,Common test methods for insulating and sheathing materials of electriccables – Part 3: Methods specific to PVC compounds – Section 1: Pressure test at hightemperature – Tests for resistance to cracking
IEC 60811-3-2:1985,Common test methods for insulating and sheathing materials of electriccables – Part 3: Methods specific to PVC compounds – Section 2: Loss of mass test -Thermal stability test
3Flat polyvinyl chloride sheathed lift cable and cable for flexible connections3.1 Code designation
60227 IEC 71 f
3.2 Rated voltage
. 300/500 v for cables with conductors having nominal cross-sectional areas not exceeding
1 mm2;
450/750 V for conductors larger than 1 mm2.3.3Construction
3.3.1 Conductor
Number of conductors: 3,4，5,6,9，12,16,18,20 or 24.
The combination of the cross-sectional areas and the number of conductors belonging to themis given in the following table 1 :
Values in parentheses are the non-preferred types.
The conductors shall comply with the requirements given in IEC 60228 for class 5 conductors.
The conductors of the cores in the side position may consist of copper wires and steel wires.The nominal geometric cross-sectional area of these conductors shall be equal to that of theother conductors and the maximum resistance shall be not more than twice the maximumresistance of a copper conductor of the same nominal cross-sectional area.
3.3.2Insulation
The insulation shall be polyvinyl chloride compound of type PVC/D applied around eachconductor.
The insulation thickness shall comply with the specified value given in table 4, column 2.The insulation resistance shall be not less than the value given in table 4, column 3.3.3.3 Arrangements of cores and strain-bearing members, if any
The cores shall be laid parallel. lt is permitted，however， that two, three,four or five coresmay be laid in groups; in such cases, a tearing thread may be inserted inside each group. ltshall be possible to ‘separate the cores without damage to the insulation.
Strain-bearing member(s) of textile material may be used.
A strain-bearing member (or members) of metal may also be used; in such a case (cases) it(they) shall be covered with a non-conducting abrasion-resistant material.
lf the cores are grouped, the groups shall comply with the following table 2: