GUIDE FOR TEST METHODS AND PROCEDURES TO EVALUATE THE ELECTRICAL PERFORMANCE OF INSULATORS IN FREEZING CONDITIONS
Institute of Electrical & Electronics Engineers
1. Overview
1.1 Scope
1.2 Purpose
2. Normative references
3. Definitions, acronyms, and abbreviations
3.1 Definitions
3.2 Acronyms and abbreviations
4. General requirements for insulator icing tests
4.1 Testing criteria
4.2 Testing methods
4.3 Electrical clearances and configuration
4.4 Discharge observation and interpretation
4.5 Power supply requirements
4.6 Test object preparation before testing
5. Ice test procedures and evaluation methods
5.1 Ice test for air break disconnect switches
5.2 Preparation of object for ice tests
5.3 Methods and parameters for ice exposure
5.4 Evaluation of flashover voltage for ice tests
5.5 Evaluation of ice test criteria
6. Snow test procedures and evaluation methods
6.1 General
6.2 Preparation of object for snow test
6.3 Methods and parameters for snow exposure
6.4 Evaluation of flashover voltage for snow tests
7. Cold-fog test procedures and evaluation methods
7.1 General
7.2 Preparation of object for cold-fog test
7.3 Methods and parameters for cold-fog exposure
7.4 Evaluation of flashover voltage in cold-fog test
7.5 Evaluation of cold-fog test criteria
8. Salt-fog test procedures and evaluation methods
8.1 Preparation of object for salt-fog test
8.2 Methods and parameters for salt-fog exposure at
freezing temperatures
8.3 Evaluation of flashover voltage in salt-fog test
8.4 Evaluation of salt-fog test criteria
9. Air pressure correction for freezing conditions
Annex A (informative) - Bibliography
Annex B (informative) - Typical test results
Describes procedures for testing equipment when external insulation of the test object is subjected to combinations of contamination, ice, snow, or cold fog. The methods are applicable only to tests on equipment with a rated voltage above 1 kV.
| Document Type | Standard |
| Status | Current |
| Publisher | Institute of Electrical & Electronics Engineers |
