Are you troubled by choosing a suitable oil pressure tester? Don't worry, today we will talk about this topic to help you easily grasp the key points of purchasing and avoid pitfalls!
What is an oil withstand voltage tester?
Simply put, an oil withstand voltage tester is an instrument used to test the insulation performance of insulating oil (i.e. transformer oil, switch oil, etc.). It measures the maximum voltage that the insulating oil can withstand before breakdown, which is the breakdown voltage, by applying a gradually increasing voltage. This indicator is directly related to the safe operation of power equipment, so a precise and reliable tester is crucial.
What are the factors that affect the withstand voltage resistance performance of oil?
There are many factors that affect the voltage resistance performance of insulating oil, mainly including:
Moisture content: Water is the "enemy" of insulating oil, and an increase in moisture will significantly reduce the insulation strength of the oil.
Dissolved impurities, such as acidic substances, oxidation products, etc., can affect the dielectric constant and breakdown mechanism of oil.
Mechanical impurities, such as metal shavings, dust, etc., can become "channels" for discharge, reducing the withstand voltage value.
Degree of oil aging: Insulation oil used for a long time may undergo chemical changes such as oxidation, leading to a decrease in performance.
What tools can help you?
A high-performance oil withstand voltage tester is essential for accurate oil pressure testing. There are many excellent instruments on the market, among which the series of instruments produced by Wuhan UHV Power Technology Co., Ltd. are renowned in the industry for their high precision, stability, and ease of operation. They usually have functions such as automatic boosting, automatic measurement, and data storage, greatly improving the efficiency of experiments.
What is the connection between oil withstand voltage test and?
Oil withstand voltage testing is closely related to the safe operation of power equipment. Transformers, transformers, capacitors and other electrical equipment use insulating oil for insulation and heat dissipation inside. If the breakdown voltage of the insulating oil does not meet the standard, internal discharge may occur, leading to equipment damage and even fire. Therefore, regular oil testing is a key link in ensuring the safe and reliable operation of the power system.
How to conduct a better oil withstand voltage test?
To obtain more accurate test results, in addition to choosing good instruments, the following points should also be noted:
Standardized sampling: Ensure that new pollutants are not introduced during sampling, use clean samplers, and mark them properly.
Oil treatment: Before testing, the oil sample may need to be filtered or dried to remove some moisture and impurities.
Strictly follow the standard operation: Different types of insulating oils have different testing standards (such as IEC, GB, etc.), and it is necessary to follow the corresponding testing procedures.
Regularly calibrate instruments: ensure the measurement accuracy of the tester and avoid misjudgment caused by instrument errors.
Wuhan UHV Power Technology Co., Ltd. not only provides high-quality oil withstand voltage testers, but also frequently offers technical support and testing guidance to help customers better maintain their power equipment.
Frequently Asked Questions (FAQ)
What are the main factors affecting the accuracy of oil withstand voltage tester? Mainly affected by factors such as the measurement accuracy of the instrument itself, the cleanliness of the oil sample, the moisture content, and the standardization of the operator.
Why does insulating oil contain moisture? Moisture may come from the infiltration of moisture in the air, inadequate sealing of equipment, or introduction during storage or transportation.
How often should the oil withstand voltage test be conducted? This depends on the type of equipment, operating environment, and national standards, and is usually recommended to be done regularly, such as once a year or according to equipment regulations.
What other important oil testing items are there besides oil withstand voltage resistance testing? It also includes the tangent value of dielectric loss angle, acid value, water content, flash point, etc., all of which can comprehensively reflect the health status of insulating oil.
How to choose an oil withstand voltage tester that suits your needs? We need to consider testing voltage levels, automation levels, portability, data management capabilities, and after-sales service. Wuhan UHV Power Technology Co., Ltd. offers multiple models that can be selected according to your specific application scenario.
