GUIDE FOR DETERMINATION OF MAXIMUM WINDING-TEMPERATURE RISE IN LIQUID-IMMERSED TRANSFORMERS - AMENDMENT 1
Institute of Electrical & Electronics Engineers
1 Overview
1.1 Scope
1.2 Purpose
2 References
3 Definitions
4 Test methods
4.1 Direct measurement by fiber-optic detectors
4.2 Direct measurement by thermocouples
4.3 Prototype test data
4.4 Test windings
5 Mathematical models to predict temperature
distributions and hottest-spot rises
5.1 Fundamentals
5.2 Radiator or heat exchanger heat transfer
5.3 Fluid flow within the winding
5.4 Fluid flow between heat exchangers and winding
5.5 Low distribution
5.6 Conduction heat transfer
5.7 Considerations for core-form power transformers
5.8 Considerations for distribution and small power
transformers
6 Determination of hottest-spot rise from production
thermal tests without direct measurement of hottest-
spot temperature
7 Documentation and acceptance criteria
Annex A (informative) - Bibliography on experimental testing
to predict or confirm transformer
thermal performance
Annex B (informative) - Bibliography on modeling of transformer
thermal performance
Annex C (informative) - Determination of hottest-spot rise from
tests without direct measurement
Annex D (informative) - Typical installation examples for
fiber-optic probes
Covers mathematical test programs and models determining the steady state maximum (hottest-spot) and average winding temperature rise over ambient for all liquid-immersed distribution, network, power and regulating transformers manufactured in accordance with IEEE C57.12.00-2000.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
| Supersedes |
|
