Thursday, January 24, 2019

Useful And Essential Facts About Hipot Tester

By Diane Bailey


The phrase hipot test means high potential or high voltage test. Another name used to refer to this test is dielectric withstand test. This is an analysis of electrical components that is done with the intention of checking for suitability of electrical insulation. The analysis is meant to ensure that there is no current leakage from one point to another in electrical devices. It is the opposite of continuity test. This is worth knowing about 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 reason for the process is to detect the presence of nicked or crushed insulation in a device. It also enables the identification corrosive or conductive contaminants, stray wire strands, and braided defensive around conductors. Tolerance mistakes in cables and troubles in terminal spacing can also be diagnosed easily by using hipot testing. Voltage that is used on this system is commonly two times more than the operating voltage.

Hipot testing is normally carried out by use of hipot analyzers. A normal tester usually connects one side to earth while the second part of the tester is connected to conductor that needs to be analyzed. In the arrangement, there are two contact points to which conductors may be connected, the ground and voltage.

In cases where there are 2 contacts that have to be connected, then one needs to be linked to the voltage whereas the other one is connected to ground. This type of connection is crucial as it guarantees that contacts get isolated from other kinds of contacts. If insulation between the two conductors is insufficient, then a small charge will flow between the two conductors when a massive voltage is passed through.

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.

Specifications for the quantity of current which an individual should apply also exist. Many types of different testers which a person can purchase easily exist in the current market. Varying testers are designed for varying categories of products. Therefore, knowing the tester to apply for specific applications is vital.




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