IEC 60112:2003+AMD1:2009 CSV

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test specimen
6 Test specimen conditioning
   6.1 Environmental conditioning
   6.2 Test specimen surface state
7 Test apparatus
   7.1 Electrodes
   7.2 Test circuit
   7.3 Test solutions
   7.4 Dropping device
   7.5 Test specimen support platform
   7.6 Electrode assembly installation
8 Basic test procedure
   8.1 General
   8.2 Preparation
   8.3 Test procedure
9 Determination of erosion
10 Determination of proof tracking index (PTI)
   10.1 Procedure
   10.2 Report
11 Determination of comparative tracking index (CTI)
   11.1 General
   11.2 Determination of the 100 drop point
   11.3 Determination of the maximum 50 drop withstand
        voltage
   11.4 Report
Annex A (informative) - List of factors that should be
        considered by product committees
Annex B (informative) - Electrode material selection
Bibliography

IEC 60112:2003+A1:2009 Specifies the method of test for the determination of the proof and comparative tracking indices of solidinsulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltages. The standard provides for the determination of erosion when required. Test results cannot be used directly for the evaluation of safe creepage distances when designing electrical apparatus. Has the status of a basic safety publication in accordance with IEC Guide 104. Major changes since the previous edition are the following:The selection of a material for a specific application frequently involves compromises in the levels of the individual properties and test criteria. In the previous edition of IEC 60112 the test criteria required "no burning of the specimen", but this gave rise to two issues:
- difficulties in the identification of burning which includes all types of combustion, e.g. flaming, and smouldering in the situation where scintillations had occurred giving rise in many cases to carbon on the surface of the specimen, and
- a situation in which some product committees had found it necessary to dispense with the "no burning" criterion in the tracking tests which they replaced by flame tests on the final product, thereby giving rise to two types of CTI/PTI with different criteria.
The contents of the corrigenda of June 2003 and October 2003 have been included in this copy.This consolidated version consists of the fourth edition (2003) and its amendment 1 (2009). Therefore, no need to order amendment inaddition to this publication.