Spannungsfestigkeit [kV] voltage withstand [kV]
Explanation: Die Annahme ist richtig. Es geht nur um die Durchschlagsspannung. Wurde von IEC mit "withstand voltage" genormt, fälschlicherweise in vielen Quellen aber mit "dielectric strength" bezeichnet, das sich auf die Durchbruchsfeldstärke bezieht. Diese Verwechselung stammt offensichtlich aus den USA, wo dies in UL-Normen verwendet wird (weiß ich aus eigener Erfahrung, weil ich Geräte u.a. nach UL-Normen prüfen musste). Siehe dazu den letzten Link. Area Electrical insulating solids, liquids and gases / Concepts relating to electric properties of insulating solids, liquids and gases IEV ref 212-11-35 en ESD withstand voltage maximum applied electrostatic discharge (ESD) voltage that does not cause failure parameter limits to be exceeded, provided that all devices or units under test (UUT) stressed at lower levels have also passed de ESD-Spannungsfestigkeit, http://www.electropedia.org/iev/iev.nsf/display?openform&iev... Die Durchschlagspannung, auch Durchschlagsspannung, Überschlagspannung oder Überschlagsspannung genannt, bezeichnet in der Elektrotechnik die Spannung, welche überschritten werden muss, damit ein Spannungsdurchschlag durch ein Material bzw. einen Stoff (z. B. einen Isolator) erfolgt. https://de.wikipedia.org/wiki/Durchschlagspannung verlinkt mit The breakdown voltage of an insulator is the minimum voltage that causes a portion of an insulator to become electrically conductive. https://en.wikipedia.org/wiki/Breakdown_voltage Zum Vergleich Die Durchschlagsfestigkeit (meist angegeben in kV/mm) eines Isolators ist diejenige elektrische Feldstärke, welche in dem Material höchstens herrschen darf, ohne dass es zu einem Spannungsdurchschlag (Lichtbogen oder Funkenschlag) kommt https://de.wikipedia.org/wiki/Durchschlagsfestigkeit verlinkt mit In physics, the term dielectric strength has the following meanings: • Of an insulating material, the maximum electric field that a pure material can withstand under ideal conditions without breaking down (i.e., without experiencing failure of its insulating properties). • For a specific configuration of dielectric material and electrodes, the minimum applied electric field (i.e., the applied voltage divided by electrode separation distance) that results in breakdown. This is the concept of Breakdown voltage. : In SI, the unit of dielectric strength is volts per meter (V/m). It is also common to see related units such as volts per centimeter (V/cm), megavolts per meter (MV/m), and so on. https://en.wikipedia.org/wiki/Dielectric_strength FEATURES • Up to 80 Amp switching capability • Wide contact gap of ≥ 3.0 mm • Clearance and creepage of ≥ 10 mm • 4 kV dielectric strength, 10 kV surge withstand voltage • UL Class F insulation (155°C) https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd... There are two basic classifications of insulation strength: Basic Insulation Level (BIL) or lightning-impulse withstand voltage, and power-frequency withstand voltage (often called “hipot” voltage). : Switchgear and circuit breakers most often feed transformers and other circuit breakers, both relatively 'robust' from the dielectric standpoint. https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd... Impulse Withstand Voltage as High as 10kV with 4kV Dielectric Strength: Ideal for Power Supply Switching • Input and output (between coil and contacts) are completely separated, with impulse withstand voltage of 10,000 V. • Insulation distance of 8 mm min. between coil and contacts satisfies the VDE Standard C/250 insulation requirements, and conforms to Electrical Appliance and Material Safety Law with dielectric strength of 4,000 VAC min. Standard model conforms to UL/CSA standards. https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd...
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Explanation of different spellings and types 1) Spelling variantes: "withstand voltage" has approx. 1.630.000 results "voltage withstand" has approx. (only) 178.000 results like The Dielectric Voltage Withstand Test Benefits and limitations : While 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. This white paper seeks to clarify the theory of dielectric breakdown and the objective of the dielectric voltage withstand test. It explores the applications and limitations of the test in order to better ensure its appropriate use in the product safety approval process. https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd... (Note: UL prefers to add "dielectric" as the voltage withstand test concerns dielectric (insulating) materials) 2) General term (IEC): Area Rotating machinery / Testing IEV ref 411-53-49 en voltage withstand test test applied to insulation made by applying a high voltage across the insulation to determine the adequacy of its dielectric strength de Spannungsprüfung, f http://www.electropedia.org/iev/iev.nsf/display?openform&iev... 3) Voltage withstand test: Area Electromechanical components for electronic equipment / General terms of electromechanical components IEV ref 581-21-20 en withstand voltage value of the test voltage to be applied under specified conditions in a withstand test, during which a specified number of disruptive discharges is tolerated Note – The withstand voltage is designated as: a) conventional assumed withstand voltage, when the number of disruptive discharges tolerated is zero. It is deemed to correspond to a withstand probability PW = 100 % (this is in particular the case in the low-voltage technology); b) statistical withstand voltage, when the number of disruptive discharges tolerated is related to a specified withstand probability, for instance PW = 90 %. de Stehspannung, f http://www.electropedia.org/iev/iev.nsf/display?openform&iev... (Note: Most IEC/EN standards specify to maintain the high voltage for 60 seconds without breakdown or flashover, the voltage has to be adjusted acc. the insulation class, i.e. class I (primary insulation, metal parts earthed): 1,750 V, class II (primary of double insulation), class II (secondary of double insulation) 2,500 V, class II (integral double insulation) 3,750 V for household appliances) High Voltage Test (Dielectric Voltage-withstand Test) This test is carried out by applying a significantly higher than operating voltage to the device under test. In this test, the insulation of a product, stressed to a greater extent than under normal operating conditions, should not be breached for the product to pass. In most cases, the device is stressed to twice its normal operating voltage. During type testing, i.e. testing during designing a product or for a double insulated product, however, much larger voltage may be applied. For all electrical products, the high voltage test is a universal test, meaning that every unit should pass before it can be used. https://en.wikipedia.org/wiki/Electrical_safety_testing How to determine the appropriate withstand voltage test voltage and requirements of withstand voltage testers According to the Japanese Industrial Standard JIS C 1010-1:2014, which stipulates the safety requirements for electrical equipment for measurement, control, and laboratory use, the test voltage used by a withstand voltage tester is based on the main power supply’s specifications as follows: : Although the fundamental approach to insulation resistance testing is the same as for withstand voltage testing, the two types of testing are distinguished by the following differences: • The point of insulation resistance testing is to measure the resistance value at a certain test voltage, not to gauge the strength of the insulation. By contrast, the point of withstand voltage testing is to check dielectric strength to see whether an insulation breakdown will occur. • Whereas most withstand voltage testing is carried out with an AC current, insulation resistance testing, which measures only the resistance component, uses a DC current. https://www.hioki.com/en/products/listUse/?category=13 (Note: JIS C 1010-1 is based on IEC, too) 4) Impulse withstand test Rated impulse withstand voltage Only optional in the past, the impulse test which allow defining the rated impulse withstand voltage Uimp, is now a necessity thus demonstrating the strategy of the Standards directed to increasing the importance of such performance. : The test requires the application of the impulse withstand voltage 1.2/50 μs (see Figure 1) in compliance with a particular procedure. https://electrical-engineering-portal.com/impulse-withstand-...
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