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BS EN IEC 60076-22-4:2019

BS EN IEC 60076-22-4:2019

$167.15

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

Published By Publication Date Number of Pages
BSI 2019 34
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This part of IEC 60076 applies to liquid to water heat exchangers, using forced water 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 Performance requirements
4.3 Degree of protection of electrical components (IP)
4.4 Corrosion protection
4.4.1 External (atmosphere)
14 4.4.2 Insulating liquid side
4.4.3 Water side
4.5 Insulating liquid characteristics
5 Design and characteristics
5.1 General
5.2 Main components and characteristics
5.2.1 General
5.2.2 Shell
5.2.3 Tube bundle in double tube arrangement
15 5.2.4 Headers
5.3 General characteristics
5.3.1 Rating plate information
5.3.2 Information to be provided with enquiry and order
16 5.3.3 Rated cooling capacity
5.3.4 Mechanical design
17 Tables
Table 1 – Water quality data
18 5.3.5 Preparation for transport and storage
Table 2 – Mandatory fittings
19 5.3.6 Mounting and operating conditions
6 Tests
6.1 General requirements for tests
6.1.1 General
6.1.2 List of tests
20 6.2 Routine tests
6.2.1 Tightness test insulating liquid side
6.2.2 Tightness test water side
6.2.3 Visual inspection
6.2.4 Cleanliness
6.3 Type tests – Rated values test
21 Annex A (informative)Details of the heat exchangers
A.1 Masses and dimensions
A.2 Collection and forms of suspensory types
Figures
Figure A.1 – Collection and forms of suspensory types
22 A.3 Collection and forms of horizontal types
Figure A.2 – Collection and forms of horizontal types
23 A.4 Collection and forms of vertical standing types
Figure A.3 – Collection and forms of vertical standing types
24 A.5 Parts list – Materials – Common selection of materials
25 A.6 Example for fresh water
Table A.1 – Examples of material selection depending on water quality
Table A.2 – Average values for chemically neutral water (fresh water)
26 Annex B (informative)Rating conditions of the heat exchangers
B.1 General
B.2 Definitions, symbols
B.3 Calculation of capacity in service
B.3.1 Service capacity for different temperatures at inlet according to Figure B.1
B.3.2 Service capacity for different mass flows according to Figure B.2 for plain tubes and according to Figure B.3 for finned tubes0F
27 B.3.3 Service capacity for different mass flows and different temperatures
B.3.4 Example for calculation of 25 % capacity margin of new heat exchangers
28 Figure B.1 – Capacity factor depending on inlet temperatures of oil and water
29 Figure B.2 – Capacity factor depending on mass for plain tubes
30 Figure B.3 – Capacity factor depending on mass for finned tubes
31 Annex C (informative)Example for calculation of capacity in service
33 Bibliography

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BS EN IEC 60076-22-4:2019
$167.15