| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tap changer having an automatic tap changeover function by reutilizing an existing transformer main body, and to provide a pole transformer equipped with the tap changer. <P>SOLUTION: In a tap changer 200 for a pole transformer whose transformer main body 100 includes a body container 101 housing a transformation coil part 102 having a primary coil and a secondary coil, the tap changer 200 comprises: a lid 203 to be attached to/detached from the opening of the body container 101; and a changer main body 202 integrally attached to the lid 203 and having a tap changeover function of the transformation coil part 102. The changer main body 202 has contact points driven by solenoids 211, 212 performing a lifting or dropping movement of the tap according to voltage of the secondary coil 102b, disposing a signal processing part 205 outside a changeover container 201 housing the changer main body 202, the signal processing part 205 generating control signals for driving the solenoids 211, 212 by detecting the voltage of the secondary coil 102b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
