IEC 60060-1:2010 pdf High-voltage test techniques – Part 1: General definitions and test requirements
1 Scope
This part of IEC 60060 is applicable to:
– dielectric tests with direct voltage;
– dielectric tests with alternating voltage;
– dielectric tests with impulse voltage;
– dielectric tests with combinations of the above.
This part is applicable to tests on equipment having its highest voltage for equipment U m
above 1 kV.
NOTE 1 Alternative test procedures may be required to obtain reproducible and significant results. The choice of a suitable test procedure should be made by the relevant Technical Committee.
NOTE 2 For voltages U m above 800 kV meeting some specified procedures, tolerances and uncertainties may not be achievable.
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 60060-2, High-voltage test techniques – Part 2: Measuring systems
IEC 60270, High-voltage test techniques – Partial discharge measurements
IEC 60507:1 991 , Artificial pollution tests on high-voltage insulators to be used on a.c.
systems
IEC 61 083-1 , Instruments and software used for measurement in high-voltage impulse tests –
Part 1: Requirements for instruments
IEC 61 083-2, Digital recorders for measurements in high-voltage impulse tests – Part 2:
Evaluation of software used for the determination of the parameters of impulse waveforms
IEC 62475, High-current test techniques: Definitions and requirements for test currents and
measuring systems
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1 Definitions related to characteristics of discharges
3.1.1 disruptive discharge
failure of insulation under electric stress, in which the discharge completely bridges the
insulation under test, reducing the voltage between electrodes to practically zero
NOTE 1 Non-sustained disruptive discharge in which the test object is momentarily bridged by a spark or arc may occur. During these events the voltage across the test object is momentarily reduced to zero or to a very small value. Depending on the characteristics of the test circuit and the test object, a recovery of dielectric strength may occur and may even allow the test voltage to reach a higher value. Such an event should be interpreted as a disruptive discharge unless otherwise specified by the relevant Technical Committee.
NOTE 2 A disruptive discharge in a solid dielectric produces permanent loss of dielectric strength; in a liquid or gaseous dielectric the loss may be only temporary.
3.1.2 sparkover
disruptive discharge that occurs in a gaseous or liquid dielectric
3.1.3 flashover
disruptive discharge that occurs over the surface of a dielectric in a gaseous or liquid
dielectric
3.1.4 puncture
disruptive discharge that occurs through a solid dielectric
3.1.5 disruptive-discharge voltage value of a test object
value of the test voltage causing disruptive discharge, as specified, for the various tests, in
the relevant clauses of the present standard
3.1.6 non-disruptive discharge
discharge between intermediate electrodes or conductors where the test voltage does not
collapse to zero
NOTE 1 Such an event should not be interpreted as a disruptive discharge unless so specified by the relevant Technical Committee.
NOTE 2 Some non-disruptive discharges are termed “partial discharges” and are dealt with in IEC 60270.
3.2 Definitions relating to characteristics of the test voltage
3.2.1 prospective characteristics of a test voltage
characteristics which would have been obtained if no disruptive discharge had occurred.
When a prospective characteristic is used, this shall always be stated.
3.2.2 actual characteristics of a test voltage
those characteristics which occur during the test at the terminals of the test object
3.2.3 value of the test voltage
as defined in the relevant clauses of this standard
IEC 60060-1:2010 pdf High-voltage test techniques – Part 1: General definitions and test requirements
