Effect, of transient voltages on power transformer design — IV

The IMPACT of a surge on the high voltage terminals of a transformer produces transient voltages not only within that winding, but also within the low voltage winding and at its terminals. The latter voltage, discussed in this paper, is impressed on the network and apparatus connected to t he secondary winding. The possibility of the transmission of high transient voltages through transformers is indicated by occasional failures during lightning storms of rotating apparatus connected to lines through transformers.