Tuesday, 22 January 2019

Useful Information Regarding Hipot Tester

By Diane Bailey


The term hipot test refers to high potential or high volt voltage check. The other term for this analysis is dielectric withstand test. This is a test of electrical components done with the goal of checking the suitability of electrical insulation. The assessment is supposed to certify that there is no electrical leakage from one part to another in electric gadgets. It is the reverse of continuity test. Here are facts regarding Hipot tester.

Hipot testing is supposed to be nondestructive to determine the adequacy of electrical insulation. The testing is high-voltage and it is applied to all electrical devices for a given period of time so as to ensure that the insulation is not marginal. The process involves the application of high amounts of voltage to the insulation.

The purpose of the process is to determine if there is crushed or nicked insulation in a component. It also helps in identifying conductive or corrosive contaminants, braided shielding, and stray wire strands around conductors. Tolerance errors in cables and terminal spacing problems can also be identified easily using hipot testing. The voltage that is used in this process is usually two times greater than operating voltage.

Hipot analyzers are the devices applied in Hipot testing. One side of the supply is normally connected to safety ground in a typical tester. The other side of the supply connects the conductor that has to be tested. Only two forms of contact to which the conductors can be linked exist in this arrangement. That is the voltage and ground.

In the situation there exist two contacts for which connection is needed, then a person must connect one to the ground while the other one to the voltage. This type of connection is vital. It makes sure that contacts are isolated from other forms of contacts. A small current will flow from one conductor to the other when a massive voltage is applied when the insulation placed between the two conductors is not adequate.

The flow of that tiny current is normally acceptable. However, a breakdown of air or solid insulation is supposed not to happen in any case. It is understood that any product is normally subjected to normal everyday transient over voltages. That is why high voltage is normally applied in these tests. Therefore, the product should remain safe and operational in event such differences in voltages happen during the day.

There are several requirements that are normally checked while carrying out this evaluation. The various requirements need the voltage to get applied for a distinct amount of time. Under IEC 06950 standards, the analysis is meant to be carried out continuously for a period of one minute. Nevertheless, a typical rule is to use 110-220 percent of working voltage of the product plus a thousand volts for 1 to 2 seconds.

There are also specifications for the amount of current that need to be applied. Currently, there are several different kinds of testers in the market that one can buy. Different testers are meant for different classes of products. As such, it is important to know which tester to use for certain applications.




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