This 3D animated video explains how an off load tap changer works. Off load tap changers are fitted to electrical transformers and are sometimes referred to as de-energized tap changers, or no load tap changers. ********** Check out some of our FREE engineering Apps! https://play.google.com/store/apps/developer?id=saVRee ********** Want more high-quality educational engineering videos? Click on the link below to view our online video courses. https://courses.savree.com/ And don't forget your COUPON CODE (use it at checkout!)! 25%-off-youtube Hope to see you on a course soon! ********** Introduction We discuss how the no load tap changer works and its construction. There are two main types of tap changer, on load, and off load, but this video focuses on the off load type only. Off load tap changers are used to vary the amount of secondary winding turns. By varying the amount of secondary turns within the circuit, it is possible to vary the output voltage of the transformer. The terms ‘turn ratio’, ‘voltage ratio’ and ‘mutual inductance’ are mentioned during this video. This video lesson is taken from the saVRee Introduction to Electrical Transformers course: https://savree.com/en/electrical-transformer-course/ Access this course and many others for only €9.99. Access all courses and over 250 interactive 3D models for only €14.99 a month. https://savree.com/en/savree-courses/ If you need a custom 3D model for your interactive 3D presentation or marketing video, please visit: https://savree.com/en/custom-3d-model/ If you need a custom 3D animation for your interactive 3D presentation or marketing video, please visit: https://savree.com/en/custom-3d-animation/ Want to use this 3D model in your training course? Simply join saVRee!