Transcription of The Dielectric Voltage Withstand Test - UL
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The Dielectric Voltage Withstand Test - UL
The Dielectric Voltage Withstand TestBenefits and limitationsThe Dielectric Voltage Withstand Testpage 2 The Dielectric Voltage Withstand test is an integral part of the product safety evaluation of electrical and electronic devices, and provides manufacturers with important information regarding the quality and appropriateness of the chosen insulation system. The test involves placing an extra-high Voltage across the insulation barrier of the device for one minute. If the insulation holds the Voltage , the device is deemed to have passed the test. However, if the applied Voltage leads to the sudden breakdown of the insulation material and allows current to flow, the insulation is determined to be insufficient since it might pose a shock hazard to the Dielectric Voltage Withstand test is widely used, the real objective of the test is often misunderstood, which may lead to incomplete testing or misleading test results.
The dielectric breakdown of an insulating material is a complex physical phenomenon but it may be generally characterized as a sudden change in the resistance of the insulation under test due to the applied voltage. Simply stated, the test voltage breaks down the insulating properties of the material. The mechanism of dielectric breakdown
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