1. This paper with 220/110/10 kV step-down transformer substation design as an example, elaborated the power system engineering of substation part electrical design (a part of the whole process of).

2. As the step-down transformer has no load when the SCR is turned off, the system is stable during switching.

3. A new protection scheme for step-down transformer and connecting buses based on longitudinal comparison principle is presented.

4. In this paper, a circuit which consists of two capacitors and a conductor is proposed to achieve the function of step-down transformer.

5. The repairman said he thought he only had to replace a single, burned-out component. But he couldn't check it unless I fetched a step-down transformer from home.