| 摘要 |
The present invention relates to a no-load tap changer. The no-load tap changer comprises: a fixing insulating tap plate formed to be long in a length direction thereof, and having a plurality of coupling grooves formed therein; a plurality of fixing contact points formed in the coupling grooves of the fixing insulating tap plate; a pair of moving contact points coming into contact with two fixing contact points simultaneously; a gear box having a moving rack gear and a pinion gear moving the pair of moving contact points; a driving shaft supporting the center of the gear box; and a driving handle moving the driving shaft. In comparison with the related art, a plurality of input lines and output transformers are formed to enable transformation without errors, and an electrical connection point of a tap can be easily moved to prevent generation of resistance, thus increasing efficiency. Further, the same shaft can be used for a plurality of taps to reduce deviation of each of the taps. Further, dustproof, waterproof, and airtight structures can be adopted in the driving device, thus securing quality and stability. |
