IEC 60227 5-2003 pdf – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible cables (cords)

IEC 60227 5-2003 pdf – Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible cables (cords).
1 General 1.1 Scope This part of IEC 60227 details the particular specifications for polyvinyl chloride insulated flexible 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 individual type 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 edition of the referenced document (including any amendments) applies. IEC 60227-1:1993, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 1: General requirements IEC 60227-2:1979, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 2: Test methods IEC 60228:1978, Conductors of insulated cables. Guide to the dimensional limits of circular conductors IEC 60332-1:1993 Tests on electric cables under fire conditions – Part 1: Test on a single vertical insulated wire or cable IEC 60811-1-1:1993, Common test methods for insulating and sheathing materials of electric cables – Part 1: Methods for general applications – Section 1: Measurement of thickness and overall dimensions – Tests for determining the mechanical properties IEC 60811-1-2:1985, Common test methods for insulating and sheathing materials of electric cables – 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 electric cables – 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 electric cables – Part 3: Methods specific to PVC compounds – Section 1: Pressure test at high temperature – Tests for resistance to cracking
2 Flat tinsel cord 2.1 Code designation 60227 IEC 41. 2.2 Rated voltage 300/300 V. 2.3 Construction 2.3.1 Conductor Number 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, helically wound 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 PVC/D applied around each conductor. 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. 2.3.3 Assembly 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, to facilitate separation of the cores. 2.3.4 Overall dimensions The mean overall dimensions shall be within the limits given in table 1, columns 2 and 3. 2.4 Tests Compliance with the requirements of 2.3 shall be checked by inspection and by the tests given in table 2. 2.5 Guide 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.