BSI PD IEC/TR 61641:2014
$142.49
Enclosed low-voltage switchgear and controlgear assemblies. Guide for testing under conditions of arcing due to internal fault
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 28 |
This technical report gives guidance on the method of testing of assemblies under conditions of arcing in air due to an internal fault.
The purpose of this test is to assess the ability of the assembly to limit the risk of personal injury, damage of assemblies and its suitability for further service as a result of an internal arcing fault.
The test procedure given in this technical report applies only:
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to enclosed, floor-standing or wall-mounted low-voltage switchgear and controlgear assemblies according to IEC 61439‑2 (power switchgear and controlgear assemblies – PSC assemblies);
This technical report can be used as a reference for arc fault tests of other products, but adaptations of the test procedures and acceptance criteria can apply taking into account the specifics of such other assemblies or products.
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to situations when doors and covers of the assembly are closed and correctly secured.
When tests under different or more severe conditions are agreed between the user and the manufacturer, this technical report can be used as a guide.
The test procedure given in this technical report takes into consideration:
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the effects of the internal overpressure acting on covers, doors, etc.;
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the thermal effects of the arc or its roots on the enclosures and of ejected hot gases and glowing particles.
The test procedure given in this technical report does not cover:
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other effects which can constitute a risk, such as toxic gases and loud noises;
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conditions during maintenance work, open doors or similar;
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access to the top and bottom of the assembly.
This is a voluntary test made at the discretion of the manufacturer.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | English CONTENTS |
| 5 | FOREWORD |
| 7 | INTRODUCTION |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Terms and definitions |
| 11 | 4 Classification of low-voltage switchgear and controlgear assemblies 4.1 Classification with regard to the protection characteristic 4.2 Classification with regard to persons who have access |
| 12 | 5 assembly characteristics 6 Requirements and tests for an arc ignition protected zone 6.1 Constructional requirements of an arc ignition protected zone |
| 13 | 6.2 Dielectric test of arc ignition protected zones 6.3 IP test of arc ignition protected zones 7 Selection of test specimen and validity of tests for similar designs (possibilities for derivation) |
| 14 | 8 Testing – Arc fault tests 8.1 General 8.2 Voltage |
| 15 | 8.3 Current 8.4 Frequency 8.5 Duration of the test 8.6 Test procedure 8.6.1 Supply circuit 8.6.2 Arc initiation |
| 16 | Tables Table 1 – Sizes of the copper ignition wire without current-limiting protection device Table 2 – Sizes of the copper ignition wire with current-limiting protection device |
| 17 | 8.6.3 Repetition of the test 8.6.4 Indicators (for observing the thermal effects of gases) |
| 18 | 8.7 Assessment of the test 9 Test report |
| 20 | Figures Figure 1 – Mounting frame for indicators Figure 2 – Examples of installation positions of the indicators |
| 21 | Annex A (informative)User guide to arc fault mitigation A.1 General |
| 22 | A.2 Arc ignition protected zones A.3 Items for classification Table A.1 – Options for classification |
| 23 | A.4 Use of this technical report |
| 24 | Annex B (informative) List of notes concerning certain countries |
| 25 | Bibliography |
