High voltage or high potential test is what the phrase hipot test means. Dielectric withstand test is the other name for this test. It is an analysis of electrical parts. It is done purposely to check for suitability of the electrical insulation. Ensuring current leakage from one place to another within electrical devices does not exist is the goal the analysis is meant to achieve. This analysis is the exact contrary of continuity test. This is what Hipot tester are all about.
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 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 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.
Even though the flow of such a small current is usually acceptable, a breakdown of solid or air insulation is not supposed to occur in any case. High voltage is usually used in these tests because it is believed that any product is usually subjected to normal day-to-day transient over voltages. As such, in case such variations in voltages occur during the day, the product is supposed to remain operational and safe.
While doing this analysis, varying standards are normally observed. The voltage should be applied for varying amounts of time as required by different standards. The test needs to be continued for a one-minute duration. This requirement is under IEC 06950. A typical rule of thumb requires applying 110 to 120 percent of operational voltage of the product. This is plus 1000 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.
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 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 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.
Even though the flow of such a small current is usually acceptable, a breakdown of solid or air insulation is not supposed to occur in any case. High voltage is usually used in these tests because it is believed that any product is usually subjected to normal day-to-day transient over voltages. As such, in case such variations in voltages occur during the day, the product is supposed to remain operational and safe.
While doing this analysis, varying standards are normally observed. The voltage should be applied for varying amounts of time as required by different standards. The test needs to be continued for a one-minute duration. This requirement is under IEC 06950. A typical rule of thumb requires applying 110 to 120 percent of operational voltage of the product. This is plus 1000 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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