NO-LOAD VOLTAGE HOLDING DEVICE FOR EXTRA-HIGH VOLTAGE TRANSFORMER

摘要

In a transformer having a multipoint connection module inside a switching device and having a drive box for opening and closing the switching device, the present invention includes multiple multipoint connection modules which respectively include: a support plate; multiple fixed contacts which are formed on one side of the support plate in a circular arc direction at regular intervals; and a moving contact which is in contact with each of the fixed contacts by rotating at the center of the support plate. The present invention also includes an axis joint part which is formed in a straight line with each moving contact in order to rotate the moving contact of the multipoint connection module simultaneously. The drive box includes an automatic locking member which opens and closes automatically when opening and closing the drive box. When transformer power is applied, the automatic locking member is automatically locked, and when the transformer power is blocked, the automatic locking member is automatically released. Therefore, efficiency is increased since resistance is not generated, as the electrical connection point of a tap is easily moved. Each deviation decreases since multiple taps use the same axis. A failure rate remarkably decreases since an arc is not generated in a part where a tap is combined. Quality and stability are also obtained by selecting a structure having a protection against dust, water resistance, and airtightness in the drive box.;COPYRIGHT KIPO 2015