🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BSI PD CLC IEC/TS 60079-39:2019:2020 Edition

BSI PD CLC IEC/TS 60079-39:2019:2020 Edition

$198.66

Explosive atmospheres – Intrinsically safe systems with electronically controlled spark duration limitation

Published By Publication Date Number of Pages
BSI 2020 58
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This Technical Specification specifies the construction, testing, installation and maintenance of Power-i apparatus and systems which utilise electronically controlled spark duration limitation to maintain an adequate level of intrinsic safety.

This Technical Specification contains requirements for intrinsically safe apparatus and wiring intended for use in explosive atmospheres and for associated apparatus intended for connection to intrinsically safe circuits entering such atmospheres.

This Technical Specification excludes the level of protection “ia” and the use of softwarecontrolled circuits.

This Technical Specification applies to electrical equipment utilising voltages not higher than 40 V d.c. and a safety factor 1,5 for Groups IIB, IIA, I and III. It is also applicable to Group IIC “ic” apparatus with a safety factor 1,0. Group IIC “ib” apparatus with a safety factor 1,5 are restricted to voltages up to 32 V d.c.

This type of protection is applicable to electrical equipment in which the electrical circuits themselves are incapable of causing an explosion of the surrounding explosive atmospheres.

This Technical Specification is applicable to intrinsically safe apparatus and systems which utilise electronically controlled spark duration limitation with the aim of providing more electrical power while maintaining an adequate level of safety.

This Technical Specification is also applicable to electrical equipment or parts of electrical equipment located outside hazardous areas or protected by another type of protection listed in the IEC 60079 series, where the intrinsic safety of the electrical circuits in explosive atmospheres depends on the design and construction of such electrical equipment or parts of such electrical equipment. The electrical circuits located in the hazardous area are evaluated for use in such locations by applying this Technical Specification.

This Technical Specification supplements and modifies the requirements of IEC 60079-0, IEC 60079-11, IEC 60079-14, IEC 60079-17 and IEC 60079-25.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 CONTENTS
10 FOREWORD
12 INTRODUCTION
13 1 Scope
2 Normative references
14 3 Definitions
15 4 Power-i architecture
Figures
Figure 1 – The simplest Power-i architecture
16 5 Requirements for Power-i devices
5.1 General
5.2 Power-i source
Figure 2 – Example of complex Power-i concept architecture
17 Figure 3 – Elements of a Power-i source with voltage and current limitation
18 5.3 Power-i field device
19 5.4 Power-i wiring
Figure 4 – Example of a universal Power-i field device (basic structure)
20 5.5 Power-i terminator
5.6 Test instruments for Power-i loop check
5.7 Power-i application classes
21 6 System requirements
6.1 Selection of the permissible Power- i current class of the Power-i source
Tables
Table 1 – Definition of Power-i voltage classes
Table 2 – Definition of Power-i current classes
22 6.2 Verification of a Power-i system
Table 3 – Permitted combinations of Power-i application classes for Power-i sources as a function of the system response time for all Groups (n.a. = not allowed)
23 Table 4 – Power-i current classes of Power-i field devices or Power-i terminators matching the current class of the Power-i source
24 7 Assessment and testing
7.1 Procedure to define safety-relevant parameters
Figure 5 – Basic assessment procedure for a Power-i system
25 7.2 Type test
7.3 Routine test
8 Marking of Power-i devices
8.1 General
8.2 Examples of marking
Table 5 – Relevance for Power-i test procedures
26 9 Instructions
27 Annex A (normative) Assessment of Power-i safety parameters
A.1 General
A.2 Power-i specific test equipment
A.2.1 Power-i universal test equipment
28 A.2.2 Power-i dummy load
Figure A.1 – Basic principle of the Power-i universal test equipment
Figure A.2 – Pulse output between terminals 3 and 1 of Figure A.1
29 A.3 Determination of the safety-relevant parameters for Power-i devices and Power-i wiring
A.3.1 General
A.3.2 Safety-relevant parameters for the Power-i source
Figure A.3 – Basic principle of a Power-i dummy load
30 Figure A.4 – Basic principle of the equipment for the determination of the response time tresp-source
31 Figure A.5 – Example of an oscillogram to determinethe response time tresp-source
32 Figure A.6 – Test equipment for the determination ofthe assessment factor AFsource (basic principle)
33 Figure A.7 – Test equipment for the assessment factor test for Power-i source
34 Figure A.8 – Example of an oscillogram from a test of a Power-i source with an assessment factor AF = 8,29 for a break spark
35 Figure A.9 – Test equipment for transition pulse test of a Power-i source
36 A.3.3 Safety-relevant parameters for the Power-i field devices
37 Figure A.10 – Test equipment for the determination of the assessment factor AFfield device for Power-i field devices (basic principle)
38 Figure A.11 – Test equipment for the transition pulse test of Power-i field devices
39 A.3.4 Safety-relevant parameters for Power-i wiring
Figure A.12 – Evaluation parameter of test pulse Upulse for transition pulse test
40 Figure A.13 – Test equipment for the determination of the response time of the Power-i trunk tresp-trunk (basic principle)
41 A.3.5 Safety-relevant parameters for the Power-i terminator
42 Annex B (informative) Explanation and details of the Power-i basic concept
B.1 Physical basics of an ignition
43 Figure B.1 – Example of a typical trace of a break spark suppliedwith a linearly limited source
Figure B.2 – Example of a typical trace of a break spark limited by a Power-i source
44 B.2 Output characteristics of a Power-i source
45 Figure B.3 – Example of output set of characteristic curvesof a Power-i source during load connection
46 B.3 Measurement and scientific results as basis for Power- i minimum ignition values
B.3.1 Test setups for the determination of the ignition probability
Figure B.4 – Basic principle of a Power-i power sourcefor the voltage threshold return mode
Figure B.5 – Example of output set of characteristic curves of a Power-i source in the case of a failure
47 Figure B.6 – Test setup with STA for break sparks
Figure B.7 – Test setup with STA for make sparks
48 B.3.2 Result of the spark ignition tests and their implementation in Table 3
Figure B.8 – Power-i ignition values for voltage class 24V (24 VDC)
49 Figure B.9 – Power-i ignition values for voltage class 32V (32 VDC)
Figure B.10 – Power-i ignition values for voltage class 40V (40 VDC)
50 Figure B.11 – Ignition energy in relation to the usedhydrogen percentage in the gas mixtures
51 Annex C (informative) Examples of Power-i devices and systems
C.1 Power-i application for a solenoid valve
Figure C.1 – Simple solenoid valve Power-i application (example)
52 C.2 Example of a generally designed Power-i source
C.3 Example of a Power-i field device
Figure C.2 – Example of a generally styled Power-i field device
53 C.4 Example of a Power-i dummy load
C.5 Example of a Power-i terminator
Figure C.3 – Example of a V-limitation unit (level of protection “ib”)
Figure C.4 – Example of a Power-i dummy load
54 Figure C.5 – Example of a Power-i terminator
55 Annex D (informative) Example of interconnection of Power-i devices including Power-i wiring to a Power-i system
D.1 Specific aim and given values
D.2 Solution example

Related products

BSI PD CLC IEC/TS 60079-39:2019
$198.66