How come we have to continue on the actual Voltage Check?
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Written by: usergirl
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Date: Thu, 5 Jan 2012 |
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The variations between DC voltage test and AC frequency voltage are as follows:
There're two sorts of voltage tests, i.e. DC voltage test and AC frequency voltage. The prosperities of insulating supplies figure out various Breakdown Mechanism in between AC and DC voltage. There're a series of various media in many insulating materials and systems. When the gear is operating under AC voltage, the voltage will allocate itself in proportion to dielectric constant and dimension of the materials. While the DC just find the voltage in proportion to the material's resistance. If you would like to do the DC electronic load voltage test, the test voltage of DC requires a higher diploma than electrical security tester.
Type test and factory test
Type test is used to judge that the insulation structure style is suitable for software. Usually following finishing the temperature test, humidity test, strife test and also other tests, we really should go around the check immediately. In most cases we must switch around the voltage for 1 minute.
Factory test is to detect the defects of the items within the production process. It is not used to examine the insulting construction style is reasonable or not. Quite often we do the check for your completed goods prior to packing. The insulation products generally possess the subsequent defects. The sharp components harm the wire insulation. The connecting floor cord or the primary and secondary electronic components is damaged by brief circuit. The welding joint is off or bad manipulated. Or even the creep distance is shortening. Or the insulation within the transformer is damaged.
Voltage check and breakdown check
After electrical safety tester check, it only shows that the insulation construction of products can stand up to the check voltage, however it doesn't imply that the item can stand up to how much voltage. If we go on the software study of insulation material and the style of electric equipments, we need to check the dielectric power, and we need to go around the breakdown test.
Breakdown test is to test the voltage once the dielectrics are broken down. When the electric field power exceeds a particular limit, the present with the media and the voltage around the media will not suit to Ohm legislation, and they possess a sudden improve. If the insulation breakdown for an electronic load product happens, it loses the operation function operation. The end result is absolutely different in the voltage check. Voltage check would be to ensure that the products haven't any defects, plus they can work safely and usually. Hence, the stand up to voltage in voltage check is proven to become safe, dependable, effective, so we really should be strictly adhere to it.
I studied power supply for many years, manufactured electrical safety tester. Now focused on ac electronic load research.
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