HIPOT TEST PROCEDURE PDF
various cable testing methods. The choice of the right method and the most appropriate instrument Before moving on to the main hipot testing techniques, it is. that you understand the proper setup and use of our hi-pot testers. Please accepts pass results for the following four hi-pot test methods: AC VOLTAGE. Hipot testing involves using a high potential (voltage) to test insulation. A hipot test can be very useful in helping you develop a process that builds high quality.
|Published (Last):||11 September 2015|
|PDF File Size:||8.65 Mb|
|ePub File Size:||18.1 Mb|
|Price:||Free* [*Free Regsitration Required]|
Discuss Proposed since January Electrical test equipment Electronic test equipment. However, if the actual leakage current of the product is known, then the hipot test current can be predicted.
The test voltage is applied in the same fashion as a standard hipot test, but is specified to be Direct Current DC.
Therefore, if we use dc test voltage, we ensure that the dc test voltage is under root 2 or 1. James Mazarello Aug 29, The test time for most standards, including products covered under IECis 1 minute. Do we need to test Hipot test before Functional test or after Functional test? Testing a contact in this fashion makes sure it is isolated from all other contacts.
Some of the process failures that can be detected by a production-line hipot test include, for example, a transformer wound in such a way that creepage and clearance have been reduced.
High direct voltage also referred to as over-voltage: Is there procedrue conversion from DC microamps to AC microamps? Please include the test equipment diagram in your paper.
hipkt Rick Oct 27, Most modern hipot testers allow the user to set the current limit. When you have more than two contacts to be hipot tested you connect one contact to high voltage and connect all other contacts to ground.
Hipot – Wikipedia
But I need to know what is the acceptable range of leakage current. The content is copyrighted to EEP and may not be reproduced on other websites.
This failure yipot can cause a shock to anyone that comes into contact with the faulty product. When using a dc hipot tester, the capacitors in the circuit could be highly charged and, therefore, a safe-discharge device or setup is needed.
Ahmed Oct 26, It generally consists of:. Electrical insulation failure or breakdown is usually indicated by an arc, a sharp capacitive discharge, at the failure location.
Is there any Standard for the amount of allowable leakage current during the High-Pot testing of Switchgears?. Surat Apr 06, Dear sir, pl send solar motar caulation excel sheat. Kirubanithi BE Dec 08, Dear Sir, Is there any Standard for the amount of allowable leakage current during the High-Pot testing of Switchgears?.
Jitu Oct 22, I wanted to notify you that Shrikant Kajale Kajale Projects has copied and pasted your article and posted on LinkedIn pretending he wrote it.
How DC Hipot Tests Work
Another method of establishing the current trip level would be to use the following mathematical formula: This test is used to provide a quantifiable resistance value for all of a product’s insulation. Hipot testers may also have a microcontroller and a display to automate the testing process and display the testing results. I had an Indian EE friend in America. What settings do you set the Fluke Multimeter to?
What is the permissible leakage current value for a 11kv cable.
DC Hipot Tester – Hipot Test Procedure – Electrom Instruments
Is there a table of all different voltages of transformer and the voltages to apply to hipot transformer. This page was last edited on 31 Decemberat Under normal conditions, any electrical device will produce a minimal amount of leakage current due to the voltages and internal capacitance present within the product. This may become a concern for products that actually use ac voltage for their procefure operation. Steve Mar 09, Based in our calculation we can correlate the periodicity in inches of the spikes.
Any help would be appreciated! CB Tan Feb 17, This test allows designers to estimate the breakdown voltage of a product’s design and to see where the breakdown occurred.
HIPOT test is applied after tests such as fault condition, humidity, and vibration to determine whether any degradation has taken place. Girish R Nair Jul 27, One of the advantages of using a dc test voltage is that the leakage current trip can be set to a much lower value than that of an ac test voltage.