Research at Project UHV on the Performance of Contaminated Insulators Part II - Application to Practical Design

Results of full-scale tests on V-suspension strings up to 50 standard insulators (about 24-ft long) are presented and the need of such tests is demonstrated. Because of pronounced nonlinearity on standard insulator strings, the use of large disc insulators is recommended for UHV line insulation. A practical design method for anti-contamination design is developed on a statistical basis.