When industries are going to test the performance of the machine or any electrical appliance, using an AC DC Hipot tester would greatly help in the process. This is absolutely a handy device and a great supporting tool that can be used by even homeowners to check the voltage in the electrical circuits. In addition, it also aids in determining whether the tested circuits is employing an alternate current, AC or direct current, DC. This particular tool can be extremely useful to help in checking if the cable insulation in the system or equipment is properly working or not.
High pot is the abbreviated name of high potential that means high voltage. The tool is used to test cable insulation condition that is also commonly known as the dielectric withstand test tool. A high voltage test examines good isolation. The test makes sure that there is no current will flow from a certain point to another point. It is basically the opposite of a continuity test.
The latter assures that current flows smoothly from one point to another point while the Hipot test ensures current will not flow from the points mentioned above. Thus, Hipot tests make it a point to turn up the voltage really high to ensure it will happen.
Relevant of Hipot Testing
The Hipot testing is a nondestructive evaluation of machines, cables or any electrical apparatus that evaluates the suitability of electrical insulation for the normally occurring over voltage impermanent. This is a high-voltage testing tool that is employed to all devices or equipment for a certain time to make sure that the insulation is not marginal.
This testing tool is tremendously helpful in looking for scratched or crushed insulation and stray wire strands or interlaced shielding as well as conductive or corrosive impurities throughout the conductors; terminal spacing issues. In addition, this tool also greatly helps in detecting tolerance errors in the cable.
During the manufacturing process of equipment or a machine, the insufficient slow or gradual movement and clearance distances are detected.
However, the production-line Hipot check is only an evaluation or a test of the manufacturing process to verify whether the construction of a production unit is just similar to the construction of the unit that has undergone a type-testing evaluation. Several of the processes failures can be checked by a production-line Hipot test include a transformer slashed or glazed to lessen inadequate slow or gradual movements and clearance distances.
Most of the contemporary Hipot testers permit users to set the current limit. Though, when the actual leakage current of the product is determined, then the Hipot test current can be specified or estimated. The most effective way to determine the trip level is to examine a few product samples, and set up an average Hipot current. Once this has been attained, then the leakage current trip level must be established to a slightly higher value than the average value. The Hipot tester, current trip level must be set sufficiently high enough to prevent trouble failure relating to the leakage current, and in the same way, low enough not to disregard a true breakdown in the insulation.