Dielectric Withstand or hipot testing is done by applying high voltage between wire being tested and ground, presumably locomotive chassis. If excess current leakage or if an arc occurs, test fails. Insulation Resistance testing provides numerical value indicating resistance insulation. Information on how hipot testers work can be read below.
Hi Pot can either be AC DC, done occasionally or at assembly line end among others. Stress test result commonly indicates Pass Fail in view of current leak. For a few structures, this may demonstrate risk. Testing median voltage cable might likewise demonstrate risk.
Dielectric quality presents peak electric field that raw material may withstand under perfect conditions without tearing apart or without encountering insulating properties breakdown. Theoretical dielectric quality is material natural property on mass and separate system material or an electrode within field is connected. This natural dielectric withstand illustrates what might be estimated utilizing raw materials under perfect laboratory conditions.
In breakdown, electric field effectively frees bounded electrons. When applied electrical field is high, free electrons coming from background current radiation may be accelerated with velocities that may liberate additional bounded electrons upon meeting neutral atomic particles, molecules within avalanche breakdown. Breakdowns occur quite suddenly, typically nanoseconds, causing an electrical conduction path formation and disruptive discharge through material. Towards solid materials, breakdowns severely degrades, even neutralizing, its capability to insulate.
Regarding difference between insulation and dielectric testing, none exists. There should be no difference between insulation versus dielectric testing. Dielectrical strength simply shows how well insulator material. Now regarding testing, frequency test voltage should be determined by what voltage type insulating substance will expect during its operational life. Which means you should not DC withstand testing component that will be used for AC 5060 Hz applications.
Whilst they are only two particular and altogether different techniques, these terms are irresponsibly tossed around reciprocally in trade. So you cannot without much stretch depend on those names precisely portraying what is being examined closely by way test was done. For instance, in Practice manual Dielectric Tests, wherein Di electric Tests within definition is mix of HiPot tests Insulation Resistance tests.
Whereas, typically, HiPot tester being used for Di electric Strength Withstand test would suit utilization for an Insulation Resistance test. Specific terminology used would really depend on company you are working, dealing with. If it really matters, you need to read given procedure description itself.
Insulation Resistance test will show DC most of the time. Di electric withstand test will commonly be AC yet can be DC. When one studies AC DC removal as one investigates similar subjects, previous experiments regarding above topic were conducted by research engineers. Final results show both are still required since they offer very distinct information.
An emphasis on these tests interchangeability would trivial because, at the end of the day, most insulated materials go through both as it unwise generally to pigeon hole your substance product into using only one frequency, electrical transmission when most cases it will work for both assuming they have same amount. Using 48v DC system, generally using materials with secondary rating around 600v ac should suffice. Ultimately as long as one does not fail hipot, everyones happy regardless of insulated matter used.
Hi Pot can either be AC DC, done occasionally or at assembly line end among others. Stress test result commonly indicates Pass Fail in view of current leak. For a few structures, this may demonstrate risk. Testing median voltage cable might likewise demonstrate risk.
Dielectric quality presents peak electric field that raw material may withstand under perfect conditions without tearing apart or without encountering insulating properties breakdown. Theoretical dielectric quality is material natural property on mass and separate system material or an electrode within field is connected. This natural dielectric withstand illustrates what might be estimated utilizing raw materials under perfect laboratory conditions.
In breakdown, electric field effectively frees bounded electrons. When applied electrical field is high, free electrons coming from background current radiation may be accelerated with velocities that may liberate additional bounded electrons upon meeting neutral atomic particles, molecules within avalanche breakdown. Breakdowns occur quite suddenly, typically nanoseconds, causing an electrical conduction path formation and disruptive discharge through material. Towards solid materials, breakdowns severely degrades, even neutralizing, its capability to insulate.
Regarding difference between insulation and dielectric testing, none exists. There should be no difference between insulation versus dielectric testing. Dielectrical strength simply shows how well insulator material. Now regarding testing, frequency test voltage should be determined by what voltage type insulating substance will expect during its operational life. Which means you should not DC withstand testing component that will be used for AC 5060 Hz applications.
Whilst they are only two particular and altogether different techniques, these terms are irresponsibly tossed around reciprocally in trade. So you cannot without much stretch depend on those names precisely portraying what is being examined closely by way test was done. For instance, in Practice manual Dielectric Tests, wherein Di electric Tests within definition is mix of HiPot tests Insulation Resistance tests.
Whereas, typically, HiPot tester being used for Di electric Strength Withstand test would suit utilization for an Insulation Resistance test. Specific terminology used would really depend on company you are working, dealing with. If it really matters, you need to read given procedure description itself.
Insulation Resistance test will show DC most of the time. Di electric withstand test will commonly be AC yet can be DC. When one studies AC DC removal as one investigates similar subjects, previous experiments regarding above topic were conducted by research engineers. Final results show both are still required since they offer very distinct information.
An emphasis on these tests interchangeability would trivial because, at the end of the day, most insulated materials go through both as it unwise generally to pigeon hole your substance product into using only one frequency, electrical transmission when most cases it will work for both assuming they have same amount. Using 48v DC system, generally using materials with secondary rating around 600v ac should suffice. Ultimately as long as one does not fail hipot, everyones happy regardless of insulated matter used.
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Get an overview of the factors to consider when selecting a hipot tester supplier and more information about a reputable supplier at http://www.rossengineeringcorp.com/products/measurement/ac-dc-digital-hipots.html now.
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