IEC 60227.5 pdf download – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible cables (cords)
1General
1.1scope
This part of lEC 60227 details the particular specifications for polyvinyl chloride insulatedflexible cables (cords), 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.
1.2Normative references
The following referenced documents are indispensable for the application of this document.Fordated references, only the edition cited applies. For undated references, the latest edition ofthe referenced document(including any amendments) applies.
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. Guide to the dimensional limits of circularconductors
IEC 60332-1:1993 Tests on electric cables under fire conditions – Part 1: Test on a singlevertical insulated wire or cable
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 60811-3-1:1985,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 – Thermalstability test
Flat tinsel cord2.1Code designation60227 IEC 41.
2.2 Rated voltage300/30o v.
2.3construction2.3.1ConductorNumber of conductors: 2.
Each conductor shall comprise a number of strands or groups of strands，twisted together,each strand being composed of one or more flattened wires of copper or copper alloy, helicallywound on a thread of cotton,polyamide or similar material.
The conductor resistance shall not exceed the value given in table 1, column 5.2.3.2 Insulation
The insulation shall be polyvinyl chloride compound of type PVCID applied around eachconductor.
The insulation thickness shall comply with the specified value given in table 1, column 1.The insulation resistance shall be not less than the value given in table 1, column 4.2.3.3Assembly of cores
The conductors shall be laid parallel and covered with the insulation.
The insulation shall be provided with a groove on both sides, between the conductors，tofacilitate separation of the cores.
2.3.4overall dimensions
The mean overall dimensions shall be within the limits given in table 1, columns 2 and 3.
2.4Tests
Compliance with the requirements of 2.3 shall be checked by inspection and by the tests givenin table 2.
2.5Guide to use
Maximum conductor temperature in normal use: 70°c.NOTE Other guidelines are under consideration.
3 Not used
4 Cord for indoor decorative lighting chains
4.1 Code designation
60227 IEC 43.
4.2 Rated voltage
300/300 V.
4.3 Construction
4.3.1 Conductor
Number of conductors: 1 .
The conductor shall comply with the requirements given in IEC 60228 for class 5 conductors.
4.3.2 Insulation
The insulation shall be polyvinyl chloride of the type PVC/D, it shall consist of two layers and applied by dual extrusion around the conductor.
The outer layer of insulation shall be of a colour contrasting with that of the inner layer, but shall adhere to the inner layer.
The combined thickness of the inner and outer layer of insulation shall comply with the overall thickness specified in table 5, columns 3 and 4, but at no point the thickness of either layer
shall be less than the value specified in column 2.
The insulation resistance at 70 °C shall be not less than the values given in table 5, column 7.
4.3.3 Cord identification
Preferred colour of outer layer: green.
4.3.4 Overall diameter
The mean overall diameter shall be within the limits given in table 5, columns 5 and 6.
4.4 Tests
Compliance with the requirements of 4.3 shall be checked by inspection and by the tests given in table 6.
4.5 Guide to use
Maximum conductor temperature in normal use: 70 °C.
IEC 60227.5 pdf download – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible cables (cords)
