IEC 60840-2004 pdf – Power cables with extruded insulation and their accessories for rated voltages above 30 kV (U m = 36 kV) up to 150 kV (U m = 170 kV) – Test methods and requirements

IEC 60840-2004 pdf – Power cables with extruded insulation and their accessories for rated voltages above 30 kV (U m = 36 kV) up to 150 kV (U m = 170 kV) – Test methods and requirements.
1 Scope This International Standard specifies test methods and requirements for power cable systems for fixed installations, for rated voltages above 30 kV (U m = 36 kV) up to and including 150 kV (U m = 170 kV). It also separately covers cables and accessories. The requirements apply to single-core cables and to individually screened three-core cables and to their accessories for usual conditions of installation and operation, but not to special cables and their accessories, such as submarine cables, for which modifications to the standard tests may be necessary or special test conditions may need to be devised. This standard does not cover transition joints between cables with extruded insulation and paper insulated cables. 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 60060-1:1989, High-voltage test techniques – Part 1: General definitions and test requirements IEC 60183:1984, Guide to the selection of high-voltage cables IEC 60228:1978, Conductors of insulated cables IEC 60229:1982, Tests on cable oversheaths which have a special protective function and are applied by extrusion IEC 60230:1966, Impulse tests on cables and their accessories IEC 60287-1-1:1994, Electric cables – Calculation of the current rating – Part 1: Current rating equations (100 % load factor) and calculation of losses – Section 1: General 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 application – Section 1: Measurement of thickness and overall dimensions – Tests for determining the mechanical properties
IEC 60811-1-3:1993, Insulating and sheathing materials of electric cables – Common test methods – Part 1: General application – Section 3: Methods for determining the density – Water absorption tests – Shrinkage test IEC 60811-1-4:1985, Common test methods for insulating and sheathing materials of electric cables – Part 1: Methods for general application – Section Four: Tests at low temperature IEC 60811-2-1:1998, Insulating and sheathing materials of electric and optical cables – Common test methods – Part 2-1: Methods specific to elastomeric compounds – Ozone resistance, hot set and mineral oil immersion tests IEC 60811-3-1:1985, Common test methods for insulating and sheathing materials of electric cables – Part 3: Methods specific to PVC compounds – Section One: Pressure test at high temperature – Tests for resistance to cracking IEC 60811-3-2:1985, Common test methods for insulating and sheathing materials of electric cables – Part 3: Methods specific to PVC compounds – Section Two: Loss of mass test – Thermal stability test IEC 60811-4-1:1985, Common test methods for insulating and sheathing materials of electric cables – Part 4: Methods specific to polyethylene and polypropylene compounds – Section One: Resistance to environmental stress cracking – Wrapping test after thermal ageing in air – Measurement of the melt flow index – Carbon black and/or mineral content measurement in PE IEC 60885-3:1988, Electrical test methods for electric cables – Part 3: Test methods for partial discharge measurements on lengths of extruded power cables ISO 48:1994, Rubber, vulcanized or thermoplastic – Determination of hardness (hardness between 10 IRHD and 100 IRHD) 3 Definitions For the purposes of this document, the following definitions apply. 3.1 Definitions of dimensional values (thicknesses, cross-sections, etc.)
3.2.2 sample tests tests made by the manufacturer on samples of completed cable or components taken from a completed cable or accessory, at a specified frequency, so as to verify that the finished product meets the specified requirements 3.2.3 type tests tests made before supplying on a general commercial basis a type of cable system or cable or accessory covered by this standard, in order to demonstrate satisfactory performance characteristics to meet the intended application. Once successfully completed, these tests need not be repeated, unless changes are made in the cable or accessory materials, or design or manufacturing process which might change the performance characteristics 3.2.4 electrical tests after installation tests made to demonstrate the integrity of the cable system as installed 3.3 cable system cable with installed accessories 3.4 nominal electrical stress electrical stress calculated at U 0 using nominal dimensions 4 Voltage designations and materials 4.1 Rated voltages In this standard, the symbols U 0 , U and U m are used to designate the rated voltages of cables and accessories where these symbols have the meanings given in IEC 60183. 4.2 Cable insulating materials This standard applies to cables insulated with one of the materials listed in Table 1. It also specifies for each type of insulating compound the maximum operating conductor temperatures on which the specified test conditions are based.