IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
COMMITTEE OF TESTING LABORATORIES
TESTING AND MEASURING EQUIPMENT/ALLOWED SUBCONTRACTING SUBCONTRACTING Power cables with extruded insulation and their accessories for rated voltages above 150kV (Um=170kV) up to 500kV (Um=550kV) Test methods and requirements IEC 62067 2.0 Edition (2011-11)
R=Required by Lab S=May be subcontracted Clause Table C.1,12 Table C.1 item c,
Measurement/testing
Testing / measuring equipment / material needed
Subcontracting
Type tests on cable systems Electrical type tests
12.4 Table C.1 item e
Bending test
Test cylinder.
R
Partial discharge tests at ambient temperature
High voltage power supply(AC); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary).
R
Tanδmeasurement
Tank of liquid, oven or current heating system; thermometer of thermocouple; voltage power supply(AC); tan δ measurement
R
12.4.3 Table C.1 item e 12.4.4 Table C.1 item f
IEC62067: 2.0 Edition April 2014 1/10 1/ 10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
12.4.5 Table C.1 item g
Current heating system; thermocouple; suitable time meter; high voltage power supply (AC).
R
Partial discharge tests at high temperature
High voltage power supply(AC); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary); Current heating system; thermocouple; suitable time meter.
R
Partial discharge tests at ambient temperature ( after final cycle or after lightning impulse voltage test in item i)
High voltage power supply(AC); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary).
R
Switching impulse voltage test
Current heating system; thermocouple; impulse voltage generator.
R
Lightning impulse voltage test followed by a power frequency voltage test
Current heating system; thermocouple; impulse voltage generator; high voltage power supply (AC); suitable time meter.
R
Partial discharge tests at high temperature ( if not carried out after item g) above)
High voltage power supply(AC); voltmeter; measuring circuit; discharge calibrator; double pulse generator; terminal impedance or reflection suppressor(if necessary); Current heating system; thermocouple; suitable time meter.
R
12.4.7.1 Table C.1 item j 12.4.7.2 Table C.1 item k 12.4.4
Subcontracting
Heating cycle voltage test
Table C.1 item h
Table C.1 item i
Testing / measuring equipment / material needed apparatus.
12.4.6
12.4.4
COMMITTEE OF TESTING LABORATORIES
IEC62067: 2.0 Edition April 2014 2/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause Table C.1 item l
Measurement/testing
Testing / measuring equipment / material needed
Test of outer protection for joints
Header tank connected to a sealed-off vessel or equivalent device; water heating system; thermocouple; suitable time meter; high voltage power supply(AC); voltage power supply(DC); impulse voltage generator
R
Examination
Normal or corrected vision without magnification
R
Resistivity of semi-conducting screens
Oven; silver paint; testing apparatus for measuring resistivity.
R
Annex G
Table C.1 item m
COMMITTEE OF TESTING LABORATORIES
Subcontracting
12.4.8 Table C.1 item n 12.4.9 Table C.1 item o 12.5 12.5.1
Non-electrical type tests on cable components and on complete cable Check of cable construction
same with Clause 10.4,10.6,10.7
10.4 Conductor examination
Vernier caliper or micrometer caliper
R
10.6 Measurement of thickness of cable insulation and oversheath
Measuring microscope or profile projector of at least 10 x magnification.
R
10.7 Measurement of thickness of metal sheath
IEC62067: 2.0 Edition April 2014 3/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
10.7.1 Lead or lead alloy sheath 10.7.1.1 Strip method
Micrometer with a plane faces of 4mm to 8mm diameter and an accuracy ±0,01mm.
R
10.7.1.2 Ring method
Micrometer having either one flat nose and one ball nose, or one flat nose and a flat rectangular nose 0,8mm wide and 2,4mm long with an accuracy ±0,01mm.
R
10.7.2 Plain or corrugated aluminium sheath
Micrometer with ball noses of radius about 3mm and an accuracy ±0,01mm.
R
12.5.2
Tests for determining the mechanical properties of insulation before and after ageing
Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8 ～20 completed air changes per hour.
R
12.5.3
Tests for determining the mechanical properties of oversheaths before and after ageing
Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8 ～20 completed air changes per hour.
R
IEC62067: 2.0 Edition April 2014 4/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
COMMITTEE OF TESTING LABORATORIES
Clause
Measurement/testing
Testing / measuring equipment / material needed
Subcontracting
12.5.4
Ageing tests on pieces of complete cable to check compatibility of materials
Tensile machine and system for measurement of the elongation; equipment for punching dumb-bell test pieces and equipment for cutting or grinding the insulation to obtain 2 parallel surfaces; Optical measuring instrument / dial gauge; Oven with natural air flow or air flow by pressure, airflow rate: 8 ～20 completed air changes per hour.
R
12.5.5
Loss of mass test on PVC oversheaths of type ST2
Oven with natural air flow or air flow by pressure, airflow rate: 8～20 completed air changes per hour; analytical balance with a sensitivity of 0,1mg; punching dies for dumb-bell test pieces; desiccator with silica gel or similar material.
R
12.5.6
Pressure test at high temperature on oversheaths
Indentation device consists of a rectangular blade with an edge 0,70,01mm wide, loads (weights) and supports; air oven; microscope or profile projector with two decimal places.
R
12.5.7
Test on PVC oversheaths (ST1, ST2) at low temperature Elongation test at low temperature
Tensile machine with a cooling device or tensile machine installed in a cooling chamber; system for measurement of the elongation; equipment for cutting or grinding the sample and equipment for punching dumb-bell test pieces.
R
Impact test at low temperature
Impact test apparatus; pad of sponge rubber about 40mm; suitable low temperature cabinet; hammers; caliper for
R IEC62067: 2.0 Edition
April 2014 5/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
measurement of the height of fall hammer. 12.5.8
Heat shock test for PVC oversheaths (ST1 and ST2)
Mandrel with different diameters; air oven.
R
12.5.9
Ozone resistance test for EPR insulations
Device for generating a controlled amount of ozone; a means for circulating ozonized air under controlled conditions of humility and temperature through a chamber containing the test pieces to be tested; a means for determination of ozone concentration; suitable device for the clamping and elongation of test pieces; cylindrical mandrels consisting of wood or metal; desiccator filled with silica gel or equivalent material; accurate laboratory balance reading to 0,1mg.
S
12.5.10
Hot set test for EPR and XLPE insulations
Oven with natural air flow or air flow by pressure, airflow rate: 8～20 completed air changes per hour; grips; weights; system for measurement of the elongation.
R
12.5.11
Measurement of density of HDPE insulation
Ethanol of analytical grade or another suitable l iquid; distilled or deionized water; mixing cylinder; thermostat; hydrometer calibrated at (23.0 ±0.1)℃; thermometer graduated in tenths of a degree Celsius.
R
12.5.12
Measurement of carbon black content of black PE oversheaths (ST3 and ST7)
Device consists of furnace, combustion boat about 75mm long, hard glass/silica / porcelain combustion tube with bore approximately 30mm and length 400 ±50mm, stopper carrying a
S
IEC62067: 2.0 Edition April 2014 6/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
thermometer and tube; desiccator; analytical balance with a sensitivity of 0,1mg; Nitrogen; air or oxygen. Thermogravimetric analysis as an alternative test method. 12.5.13
Test under fire conditions
Propane gas burner: 1 kW pre-mixed flame including system of confirmation of test flame 3-sided metallic screen 1200 mm high, 300 mm wide and 450 mm deep with open front and closed top and bottom; suitable timer; vernier caliper with an accuracy of 1mm; propane gas with the prescribed purity.
R
12.5.14
Water penetration test
Test cylinder; current heating system; timer; thermocouple; apparatus for water penetration test.
R
Tests on components of cables with a longitudinally applied metal tape or foil, bonded to the oversheath
Tensile testing machine.
R
Current heating system; thermocouple; suitable time meter; high voltage power supply (AC).
R
Annex E 12.5.15 Annex F Table C.2
Prequalification test of the cable system
13 Table C.2 item b 13.2 Table C.2 item f
Prequalification test on complete system Heating cycle voltage test
IEC62067: 2.0 Edition April 2014 7/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
13.2.4 Table C.2 item g
Lightning impulse voltage test
Current heating system; thermocouple; impulse voltage generator.
R
Examination
Normal or corrected vision without magnification
R
13.2.5 Table C.2 item h 13.2.6 Table C.3 13.3 Table C.3 item c 13.3.2
Tests for the extension of the prequalification of a cable system Electrical part of the extension of prequalification tests on complete cable system
Table C.3 item e
Bending test without discharge test
see 12.4.3
R
Table C.3 item f
Partial discharge at ambient temperature after installation of the accessories that are part of the test
see 12.4.4
R
Table C.3 item g
Heating cycle test without voltage
see 13.3.2.4
R
Table C.3 item h
Tan δ measurement
see 12.4.5
R
IEC62067: 2.0 Edition April 2014 8/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
Table C.3 item i
Heating cycle voltage test
see 12.4.6
R
Table C.3 item j
Partial discharge test at ambient temperature and at high temperature (after final cycle in item i or after lightning impulse voltage test in item l)
see 12.4.4
R
Table C.3 item k
Switching impulse voltage test
see 12.4.7.1
R
Table C.3 item l
Lightning impulse voltage test followed by a power frequency voltage
see 12.4.7.2
R
Table C.3 item m
Partial discharge tests at high temperature (if not carried out after item i above);
see 12.4.4
R
Table C.3 item n
Tests of outer protection for joints
see Table C.1 item l Annex G;
R
Table C.3 item o
Examination
see 12.4.8
R IEC62067: 2.0 Edition
April 2014 9/10
IEC SYSTEM FOR CONFORMITY TESTING AND CERTIFICATION OF ELECTRICAL EQUIPMENT
Clause
Measurement/testing
COMMITTEE OF TESTING LABORATORIES
Testing / measuring equipment / material needed
Subcontracting
Table C.3 item p
Resistivity of semi-conducting screens
see 12.4.9
R
Table C.3 item q
Non-electrical type tests on cable components and on completed cable
see 12.5
R
IEC62067: 2.0 Edition April 2014 10/10
