William J. Helfrich

发表

Instantaneous Circuit Breaker Settings for the Short-Circuit Protection of Three-Phase 480-, 600-, and 1040-V Trailing Cables

George Fesak, William S. Vilcheck, William J. Helfrich, 1981, IEEE Transactions on Industry Applications.

Instantaneous Circuit Breaker Settings for the Short-Circuit Protection of Direct Current 300-and 600-V Trailing Cables

George Fesak, William S. Vilcheck, William J. Helfrich, 1981, IEEE Transactions on Industry Applications.