The choice of electrode head for an insulating oil withstand voltage tester depends on the specific requirements of the international standard being followed. Generally, the electrode head should be suitable for the test voltage and frequency specified in the standard, and it should be capable of maintaining a stable and uniform electrical field during the test.
The IEC 60156 standard provides guidance on the choice of electrode head for insulating oil withstand voltage testing. According to this standard, the electrode head should have the following characteristics:
1. Smooth and flat surface: The electrode head should
have a smooth and flat surface to ensure uniform contact with the test sample.
2. Rounded edges: The edges of the electrode head should be rounded to avoid puncturing the test sample.
3. Suitable size: The size of the electrode head should be suitable for the test cell and the volume of the test sample.
4. Insulated handle: The electrode head should have an insulated handle to prevent electrical shock to the operator.
5. Corrosion-resistant: The electrode head should be made of a material that is resistant to corrosion from the test sample and the testing environment.
6. High conductivity: The electrode head should have high electrical conductivity to ensure an accurate and stable test voltage.
7. Low dielectric constant: The electrode head should have a low dielectric constant to minimize the effects of stray capacitance.
It is important to note that the choice of electrode head may also depend on the specific requirements of the testing application, such as the type of electrical equipment being tested, the type of insulating oil being used, and the testing conditions. It is therefore recommended to consult the relevant international standards and guidelines and to follow the manufacturer’s recommendations when selecting the electrode head for an insulating oil withstand voltage tester.
The electrode tip for an insulating oil withstand voltage tester may vary depending on the specific international standard being followed. However, there are some common types of electrode tips that are used in insulating oil withstand voltage testing.
1. Flat disk electrode: This type of electrode tip is commonly used for testing insulating oils with a low viscosity, such as transformer oils. It has a flat circular shape and a smooth surface to ensure uniform contact with the test sample.
2. Sphere electrode: This type of electrode tip is used for testing insulating oils with a high viscosity, such as cable oils. It has a spherical shape and a smooth surface to ensure uniform contact with the test sample.
3. Hemispherical electrode: This type of electrode tip is used for testing insulating oils with a medium viscosity, such as switchgear oils. It has a hemispherical shape and a smooth surface to ensure uniform contact with the test sample.
4. Conical electrode: This type of electrode tip is used for testing insulating oils with a high viscosity, such as some mineral oils. It has a conical shape and a smooth surface to ensure uniform contact with the test sample.
The specific electrode tip recommended for each standard may vary depending on the requirements of the standard and the testing application. It is therefore important to consult the relevant international standard or guidelines, as well as the manufacturer’s recommendations, to ensure that the correct electrode tip is used for insulating oil withstand voltage testing.
Electrode tips required by test standards
The choice of electrode tip for an insulating oil withstand voltage tester may vary depending on the specific requirements of the testing standard being followed.
1. IEC 60156: This standard requires a flat circular electrode with a smooth surface, also known as a disk electrode. The electrode should be made of stainless steel or another corrosion-resistant material, and it should have a diameter of at least 25 mm.
2. ASTM D1816: This standard recommends the use of a sphere electrode with a smooth surface for testing insulating oils with a high viscosity. The electrode should be made of brass or another non-corrosive material, and it should have a diameter of at least 5.08 mm (0.2 inches).
3. ASTM D877: This standard requires the use of a flat circular electrode with a smooth surface, also known as a disk electrode. The electrode should be made of brass or another non-corrosive material, and it should have a diameter of at least 15.9 mm (0.625 inches).
It is important to note that the choice of electrode tip may also depend on the specific requirements of the testing application, such as the type of electrical equipment being tested, the type of insulating oil being used, and the testing conditions. It is therefore recommended to consult the relevant international standards and guidelines, as well as the manufacturer’s recommendations, when selecting the electrode tip for an insulating oil withstand voltage tester.
Push Electric Manufacturing Co., Ltd. produces and sells insulating oil withstand voltage testers that fully comply with international standards. We have professional technicians who strictly control the production process and can better cooperate with after-sales service. It is the best choice to choose our company’s insulating oil dielectric strength tester
