IEC 60227.7 pdf download

IEC 60227.7 pdf download Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 7: Flexible cables screened and unscreened with two or more conductors
1General1.1scope
This part of lEC 60227 details the particular specifications for polyvinyl chloride insulated,screened and unscreened control cables of rated voltages up to and including 300/500 v.
All cables comply with the appropriate requirements given in IEC 60227-1 and each individualtype of cable complies with the particular requirements of this part.
1.2 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 editionof the referenced document (including any amendments) applies.
IEC 60096-1:1986，Radio-frequency cables – Part 1: General requirements and measuringmethods
IEC 60227-1:1993，Polyvinyl chloride insulated cables of rated voltages up to and including450/750 v – Part 1: General requirements
IEC 60227-2:1979，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)
IEC 60719:1992,Calculation of the upper and lower limits for the average outer dimensions ofcables with circular copper conductors and of rated voltages up to and including 450/750 v
IEC 60811-1-1:1993,Common test methods for insulating and sheathing materials of electriccables – Part 1: Methods for general applications – 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 applications – 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 applications – Section 4: Tests at low temperature
IEC 60811-2-1:1986,Common test methods for insulating and sheathing materials of electriccables – Part 2: Methods specific to elastomeric compounds – Section 1: Ozone resistancetest – Hot set test – Mineral oil immersion test
IEC 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
2oil resistant,polyvinyl chloride sheathed, screened and unscreened
flexible cable
2.1Code designation
60227 IEC 74 for screened cable60227 IEC 75 for unscreened cable
2.2 Rated voltage
300/500 v
2.3Construction
2.3.1ConductorNumber conductors:
2 to 60.
Preferred number of conductors:2,3.4，5，6,7，12,18,27,36,48 and 60.
The conductors shall comply with the requirements given in lEC 60228 for class 5 conductors
2.3.2lnsulation
The insulation shall be polyvinyl chloride compound of type PVC/D (see IEC 60227-1) appliedaround each conductor.”
The insulation thickness shall comply with the specified value given in column 2 of table 1or 2.The insulation resistance shall be not less that the value given in table 1, column 8 ortable 2, column 6.