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BS EN IEC 60112:2020

BS EN IEC 60112:2020

$142.49

Method for the determination of the proof and the comparative tracking indices of solid insulating materials

Published By Publication Date Number of Pages
BSI 2020 28
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IEC 60112:2020 specifies the method of test for the determination of the proof and comparative tracking indices of solid insulating materials on pieces taken from parts of equipment and on plaques of material using alternating voltage. This document provides a procedure for the determination of erosion when required. This test method evaluates the composition of the material as well as the surface of the material being evaluated. Both the composition and surface condition directly influence the results of the evaluation and are considered when using the results in material selection process. Test results are not directly suitable for the evaluation of safe creepage distances when designing electrical apparatus. This basic safety publication focusing on a safety test method is primarily intended for use by technical committees in the preparation of safety publications in accordance with the principles laid down in IEC Guide 104 and lSO/lEC Guide 51. This edition includes the following significant technical changes with respect to the previous edition:

  • Introduction of a new contaminant, solution C with a surfactant aligned with the test method of IEC 60587. The definition of the solution B was transferred to Annex B for backward reference.
  • Introduction of a screening test, considering the fact that some materials can withstand high test voltages, but fail at lower test voltages.

It has the status of a basic safety publication in accordance with IEC Guide 104.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
8 FOREWORD
10 1 Scope
2 Normative references
11 3 Terms and definitions
12 4 Principle
5 Test specimen
13 6 Test specimen conditioning
6.1 Environmental conditioning
6.2 Test specimen surface state
7 Test apparatus
7.1 Electrodes
14 7.2 Test circuit
7.3 Test solutions
15 7.4 Dropping device
7.5 Test specimen support platform
7.6 Electrode assembly installation
7.7 Conditioning chamber
16 8 Basic test procedure
8.1 General
8.2 Preparation
8.3 Test procedure
17 9 Determination of erosion
10 Proof tracking index test (PTI)
10.1 Procedure
10.2 Report
18 11 Determination of comparative tracking index (CTI)
11.1 General
11.2 Screening test
19 11.3 Determination of the maximum 50 drop withstand voltage
20 11.4 Determination of the 100 drop point
11.5 Report
22 Figures
Figure 1 – Electrode
Figure 2 – Electrode/specimen arrangement
Figure 3 – Example of typical electrode mounting and specimen support
23 Figure 4 – Example of test circuit
24 Annex A (informative)List of factors that should be considered by product committees
25 Annex B (informative)Solution B
26 Annex C (informative)Electrode material selection
C.1 Platinum electrodes
C.2 Alternatives
27 Bibliography

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BS EN IEC 60112:2020
$142.49