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BS EN IEC 60076-22-3:2019

BS EN IEC 60076-22-3:2019

$142.49

Power transformers – Power transformer and reactor fittings. Insulating liquid to air heat exchangers

Published By Publication Date Number of Pages
BSI 2019 28
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This part of IEC 60076 applies to liquid to air heat exchangers, using forced air and forced liquid circuits, used on liquid immersed power transformers according to IEC 60076-1 and reactors according to IEC 60076-6 with and without conservator for indoor or outdoor installation. It outlines the service conditions and the mechanical and electrical requirements that are common to this equipment.

It also outlines the operation requirements specific to this equipment as well as the preferred dimensions relevant for interchangeability and the type and routine tests to be performed.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7 English
CONTENTS
9 FOREWORD
11 INTRODUCTION
12 1 Scope
2 Normative references
3 Terms and definitions
13 4 General requirements
4.1 Service conditions
4.2 Degree of protection of electrical components (IP)
4.3 Corrosion protection
4.3.1 External (atmosphere)
4.3.2 Insulating liquid side
4.4 Insulating liquid characteristics
14 5 Design and characteristics
5.1 Main components and characteristics
5.1.1 Headers
5.1.2 Tube sheets
5.1.3 Tube bundle
5.1.4 Turbulators
5.1.5 Passes
5.1.6 Standard design and cooling arrangement
5.2 General characteristics
5.2.1 Rating plate information
15 5.2.2 Rated cooling capacity
5.2.3 Information to be provided with enquiry and order
16 5.2.4 Mechanical design
17 5.2.5 Preparation for transport and storage
Table 1 – Mandatory fittings
18 6 Tests
6.1 General requirements for tests
6.1.1 General
6.1.2 List of tests
6.2 Routine tests
6.2.1 Tightness tests
19 6.2.2 Visual inspection
6.2.3 Functional test
6.2.4 Cleanliness
6.2.5 External painting
6.3 Type tests – Rated values test
20 Annex A (informative)Design details of heat exchangers
A.1 Dimensions and designs
A.1.1 General
A.1.2 Schematic design of cooling unit (without oil pump)
Figures
Figure A.1 – Schematic design of cooling unit (without oil pump)
21 A.1.3 Versions of flange arrangement
Figure A.2 – Versions of flange arrangement
22 A.2 Constructional materials – Common selection of materials
23 Annex B (informative)Performance of heat exchangers
B.1 General
B.2 Performance of heat exchangers
Figure B.1 – General diagram for cooling temperatures
24 B.3 Variation of cooling capacity as function of average oil temperature rise
Figure B.2 – Variation of cooling capacity as function of average oil temperature rise
25 B.4 Variation of cooling capacity for modified flow quantities
B.4.1 Variation of cooling capacity as function of air flow quantity
Figure B.3 – Variation of cooling capacity as function of air flow quantity
26 B.4.2 Variation of cooling capacity as function of oil flow quantity
Figure B.4 – Variation of cooling capacity as function of oil flow quantity
27 Bibliography

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BS EN IEC 60076-22-3:2019
$142.49