INTRODUCTION
Section 1: General
1 Scope and object
2 Normative references
3 Definitions
3.1 Insulator string
3.2 Pin insulator
3.3 Line post insulator
3.4 Traction insulator
3.5 Lot
3.6 Flashover
3.7 Dry lightning impulse withstand voltage
3.8 50% dry lightning impulse flashover voltage
3.9 Wet power-frequency withstand voltage
3.10 Electromechanical failing load
3.11 Mechanical failing load
3.12 Puncture voltage
3.13 Creepage distance
3.14 Displacements
3.15 Short standard string
3.16 Specified characteristics
Section 2: Insulators
4 Classification, types of insulators and insulating
materials
4.1 Insulator classes
4.2 Insulator types
4.3 Insulating materials
5 Identification of insulators
Section 3: Classification of tests, sampling rules and
procedures
6 Classification of tests
6.1 Type tests
6.2 Sample tests
6.3 Routine tests
7 Quality assurance
8 Procedures for type and sample tests
8.1 Insulator selection for type tests
8.2 Sampling rules and procedures for sample tests
8.3 Re-test procedure for sample tests
Section 4: Test procedures for electrical tests
9 General requirements for high voltage tests
10 Standard atmospheric conditions and correction factors
10.1 Standard reference atmosphere
10.2 Correction factors for atmospheric conditions
11 Artificial rain parameters for wet tests
12 Mounting arrangements for electrical tests
13 Lightning impulse voltage tests (type test)
13.1 Test procedure
13.2 Acceptance criteria
14 Wet power-frequency voltage tests (type test)
14.1 Test procedure
14.2 Acceptance criteria
15 Puncture withstand test (sample test, for class B
insulators only)
15.1 Power-frequency puncture withstand test
15.2 Impulse overvoltage puncture withstand test
16 Routine electrical test (only on class B insulators
of ceramic material or annealed glass)
Section 5: Test procedures for mechanical and other tests
17 Verification of the dimensions (type and sample test)
18 Electromechanical failing load test (type and sample
test)
18.1 Test procedure
18.2 Acceptance criteria
19 Mechanical failing load test (type and sample test)
19.1 Test procedure for pin and line post insulators
19.2 Test procedure for string insulator units
19.3 Acceptance criteria for pin insulators
19.4 Acceptance criteria for string insulator units
and line post insulators
20 Thermal-mechanical performance test (type test)
20.1 Test procedure
20.2 Acceptance criteria
21 Verification of the axial, radial and angular
displacements (sample test)
21.1 Test procedure
21.2 Acceptance criteria for cap and pin insulators
21.3 Acceptance criteria for long rod insulators
22 Verification of the locking system (sample test)
22.1 Conformity of the locking device
22.2 Verification of locking
22.3 Position of the locking device
22.4 Procedure for the operation test
22.5 Acceptance criteria for the operation test
23 Temperature cycle test (sample test)
23.1 Test procedure for string insulator units,
pin insulators and line post insulators composed
of ceramic material
23.2 Test procedure for string insulator units,
pin insulators and line post insulators composed
of annealed glass
23.3 Special test procedure for insulators with thick
sections or very large insulators
23.4 Complementary specifications
23.5 Acceptance criteria
24 Thermal shock test (sample test)
24.1 Test procedure
24.2 Acceptance criteria
25 Porosity test (sample test)
25.1 Test procedure
25.2 Acceptance criteria
26 Galvanizing test (sample test)
26.1 Test procedures
26.2 Acceptance criteria
27 Routine visual inspection
27.1 Insulators with ceramic insulating parts
27.2 Insulators with glass insulating parts
28 Routine mechanical test
28.1 Routine mechanical test on line post insulators
28.2 Routine mechanical test on string insulator units
29 Mounting arrangements fot tests on pin insulators
29.1 Standard mounting arrangement for electrical
tests
29.2 Mounting arrangements for electrical tests
reproducing service conditions
29.3 Mounting arrangement for the mechanical failing
load test
Section 7: Line post Insulators
30 Coefficient for statistical analysis of the test
results on line post insulators
30.1 Coefficient for type tests
30.2 Coefficients for sample tests
31 Mounting arrangements for tests on line post
insulators
31.1 Standard mounting arrangement for electrical tests
31.2 Mounting arrangements for electrical tests
reproducing service conditions
31.3 Mounting arrangement for the mechanical failing
load test
Section 8: String Insulator units
32 Prescriptions concerning type tests on string insulators
32.1 Electrical type tests on string insulators
32.2 Mechanical type tests
33 Coefficients for statistical analysis of the test
results on string insulators
33.1 Coefficient for type tests
33.2 Coefficients for sample tests
34 Mounting arrangements for electrical tests on string
insulator units
Section 9: Insulators for overhead electric traction lines
35 Mounting arrangements for electrical tests on insulators
for overhead electric traction lines
35.1 Standard mounting arrangement
35.2 Mounting arrangement representing service conditions
Figures
Annexes
A Method of comparison of the results of electromechanical
or mechanical type and sample tests
B Illustration of the mechanical and electromechanical or
mechanical type and sample tests
C List of normative documents given for information
ZA Normative references to international publications
with their corresponding European publications
ZB (informative) A-deviations
Figure1-Schematic representation of the thermal-
mechanical performance test
Figure2-Measurement of axial and radial displacements
Figure3-Measurement of angular displacement
Figure4-Greatest thickness of the insulator
Figure B.1-Acceptance flow chart for mechanical or
electromechanical type tests
Figure B.2-Acceptance flow chart for mechanical
or electrochemical sample test
Figure B.3-Flow chart of the comparison of type and sample
test results
Table1-Cross-reference table for pin insulators
Table2-cross-reference table for line post insulators
Table3-Cross-reference table for string insulator units
TableB.1-Examples for mechanical or electromechanical
sample tests