IEC 60507-2013 pdf free
IEC 60507-2013 pdf free.Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c. systems.
It may also be applied to hollow insulators with suitable precautions to avoid internal flashover, In applying these procedures to apparatus incorporating hollow insulators, the relevant technical committees should consider their effect on any internal equipment and the special precautions which may be necessary.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60071-1, Insulation co-ordination — Part 1: Definitions, principles and rules
IECITS 60815-1, Selection and dimensioning of high-voltage insulators intended for use in polluted conditions — Part 1: Definitions, information and general principles
IECITS 608 15-2, Selection and dimensioning of high-voltage insulators intended for use in polluted conditions — Part 2: Ceramic and glass insulators for ac. systems
IEC 60060-1. High-voltage test techniques — Part 1: General definitions and test requirements
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1 test voltage
the r.m.s. value of the voltage with which the insulator is continuously energized throughout the test
3.2 short-circuit current (‘) of the testing plant
the r.m.s. value of the current delivered by the testing plant when the test object is shortcircuited at the test voltage
4 General test requirements
4.1 General
Pollution tests can be carried out for two main objectives:
• to obtain information about the pollution performance of insulators e.g. for comparison of different insulator types/profile
• to check the performance in a configuration as close as possible to the in-service one.
To reach the first objective, tests on relatively short insulator sets — if representative of the full set in terms of radial geometry and profile — may be sufficient. Results of such tests on insulators with an arcing length higher than I m can be linearly extrapolated up to and including the UHV range, at least for pollution ranging from medium to very heavy.
Tests to reach the second objective may be agreed between the manufacturer and the user whenever optimisation of the design is necessary and/or whenever it is expected that the mounting condition or the inner active parts in apparatus can affect the performance. Such tests shall be made simulating the relevant service conditions as closely as possible. In particular tests in other positions from the vertical (inclined, horizontal) duplicating actual service conditions may be agreed between the supplier and the user.
Tests at higher system voltages (800 kV and above) may present particular requirements as reported in Annex E.
4.2 Test method
The two following categories of pollution test methods are recommended for standard tests:
— the salt fog method (Clause 5) in which the insulator is subjected to a defined ambient pollution;
— the solid layer method (Clause 6) in which a fairly uniform layer of a defined solid pollution is deposited on the insulator surface.IEC 60507 pdf free download.
