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.
A continuously variable automatic transmission, or CVT, uses pulleys and a belt to automatically and seamlessly change gear ratios to maintain engine speed in an optimum range.In contrast, a conventional automatic transmission has a fixed number of gears, from four to as many as seven or eight.ith some transmission/engine combinations, the changes in engine speed can be dramatic with each shift, and the shifts can be slow or abrupt. A CVT changes gear ratios in a linear fashion based on engine speed, so you probably will never notice it changing gears.