Dielectric testing is a evaluation process performed by applying a voltage to an electrical component that exceeds its normal operating voltage. The purpose of the test is to determine if a componentâs insulation is adequate enough to protect the user from electric shock.d. The most common type of testing is the dielectric breakdown test. In this procedure, a high voltage electrical current is applied to the component. The dielectric tester monitors the amount of current leakage during the test to determine if the insulation has failed.
With the development of the new 8-speed automatic transmission by ZF, the focus is not on the number of speeds but rather on the minimization of fuel consumption. There are a number of innovations that contribute to this development.
In this example, overdrive is accomplished by usingthe 90-tooth gear to turn the 30-tooth gear. This increasesspeed three times but cuts torque to one-third.With automatic transmissions, on the other hand, gearselection decisions are made by an automatic control sys-tem.