INSULATORS FOR OVERHEAD LINES WITH A NOMINAL VOLTAGE ABOVE 100 V - CERAMIC OR GLASS INSULATOR UNITS FOR A.C. SYSTEMS - DEFINITIONS, TEST METHODS AND ACCEPTANCE CRITERIA
International Electrotechnical Committee
FOREWORD
INTRODUCTION
Section 1. General
1 Scope and object
2 Normative references
3 Definitions
Section 2. Insulators
4 Classification, types of insulators and
insulating materials
5 Identification of insulators
Section 3. Classification of tests, sampling rules
and procedures
6 Classification of tests
7 Quality assurance
8 Procedure for type and sample tests
Section 4. Test procedures for electrical tests
9 General requirements for high voltage tests
10 Standard atmospheric conditions and correction
factors for electrical tests
11 Artificial rain parameters for wet tests
12 Mounting arrangements for electrical tests
13 Lightning impulse voltage tests (type tests)
14 Wet power-frequency voltage tests (type test)
15 Puncture withstand test (sample test, for class B
insulators only)
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)
19 Mechanical failing load test (type and sample test)
20 Thermal-mechanical performance test (type test)
21 Verification of the axial, radial and angular
displacements (sample test)
22 Verification of the locking system (sample test)
23 Temperature cycle test (sample test)
24 Thermal shock test (sample test)
25 Porosity test (sample test)
26 Galvanizing test (sample test)
27 Routine visual inspection
28 Routine mechanical test
Section 6. Pin insulators
29 Mounting arrangements for tests on pin insulators
Section 7. Line post insulators
30 Coefficients for statistical analysis of the
test results on line post insulators
31 Mounting arrangements for tests on the line
post indicators
Section 8. String insulator units
32 Prescriptions concerning type tests on string
insulators
33 Coefficients for statistical analysis of the test
results on string insulators
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
string insulator units
Figures
Annexes
A Method of comparison of the results of
electromechanical or mechanical type and sample tests
B Illustration of the mechanical and electromechanical
test acceptance procedure for string insulator
units and line post insulators
C List of normative documents given for information
Applies to insulators of ceramic material of glass for use on a.c. overhead power lines with a nominal voltage greater than 1000 V and a frequency of not greater than 100 Hz. It also applies to insulators for use on d.c. overhead electric traction lines. This part applies to string insulator units, rigid overhead line insulators and to insulators of similar design when used in substations.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | SC 36B |
