subject: Leakage Present Tester Is An Abbreviation For Higher Potential [print this page] Leakage current tester is an abbreviation for high potential. Typically, Hipot is really a phrase offered to a class of electrical security screening instruments used to verify electrical insulation in completed appliances, cables or other wired assemblies, printed circuit boards, electrical motors, and transformers. The term Hypot is really a trademark for hipot testers produced by Related Research.A Hipot test (also called a Dielectric Withstand test) verifies the insulation of a item or element is sufficient to protect the operator from electrical shock. In a typical Hipot test, higher voltage is applied between a product's current-carrying conductors and its metallic chassis. The resulting present that flows through the insulation, known as leakage present, is monitored by the tester. The concept behind the check is that if a deliberate over-application of test voltage does not cause the insulation to break up, the product will probably be safe to make use of under regular operating circumstances -- hence the name, Dielectic Withstand test.Dielectric breakdown Check. The check voltage is elevated until the dielectric fails, or breaks down, allowing as well much present to movement. The dielectric is usually demolished by this check so this test is used on the random sample foundation. This test allows designers to estimate the breakdown voltage of a product's style.Dielectric Stand up to Test. A regular test voltage is utilized (below the established Breakdown Voltage) and the resulting leakage current is monitored. The leakage present must remain beneath a preset limit or the check is considered to have failed. This check is non-destructive and it is in most cases needed by security agencies to become performed as being a 100% manufacturing line check on all goods prior to they leave the factory.Insulation Resistance Check. This test is used to provide a quantifiable resistance worth for all of the product's insulation. The check voltage is utilized within the same style as a regular Hipot test, but is specified to be Immediate Current (DC). The voltage and measured present value are used to determine the resistance in the insulation.For ac electronic load a high current (generally 25-30A AC) is applied to the item under check to confirm that all conductive parts of stated product (exposed to the user) are linked to power line floor.
