The analytical relation to mainstream influence of finite thickness of the windings for correct explanation of the principle of action and of an idealized transformer in any steady-state and transient conditions. Confirmed the accuracy of the steel so-called «anomalous», ie inexplicable in terms of the traditional theory of «super — and antipotokov» with short-circuit one winding. Disclosed above, the meaning — and anti-stream for dynamic processes with sudden short circuit transformer.