How much does the volume surface resistivity tester for photovoltaic modules cost

Rubber plastic volume surface resistivity testerGB/T 18864-2002 Rubber, vulcanized - Antistatic and conductive products for industrial use - Resistance limit range - Resistance measurement range: 1 × 104 Ω to 1 × 1018 Ω. Display results: resistance, resistivity, current. The range of resistance measurement is wide from 1 × 104 Ω to 1 × 1018 Ω (current and voltage calculations are required for values above the 14th power). GB/T 1692-2008 Determination of insulation resistance of vulcanized rubber. Power cord: 1

This instrument is developed by our company Z Xin and supports large screen input, allowing users to directly obtain resistivity or resistance. With different measuring electrodes (fixtures), it can measure the volume resistivity, surface resistivity, or conductivity of different materials (solids, powders, or liquids).

Main features: ASTM D257-99 "Test Method for DC Resistance or Conductivity of Insulation Materials" Basic accuracy: 1% GB/T 22042-2008 Clothing anti-static performance Surface resistivity test method

GJB 5104-2004 General Requirements for Anti static Coatings and Static Performance of Radio Fuze Wind Hats

GB 4385-1995 Technical Requirements for Anti static Shoes and Conductive Shoes

Rubber plastic volume surface resistivity testerTest requirements: Diameter greater than 100mm (electrodes need to be customized for sizes smaller than this) GB/T 26825-2011 Anti static and Anti corrosion Adhesive

GB 50515-2010 Code for Design of Conductive (Anti static) Grounds

GB/T 24249-2009 Anti static Clean Fabric

GJB 105-1998-Z Electronic Product Anti static Discharge Control Manual

Directly displaying resistance and resistivity does not require conversion. Simply input the thickness of the sample and the instrument will automatically calculate the resistivity. Standard Solid Single Electrode: 1 set

It can retrieve records of any previous tester date and print them with small size, light weight, and high accuracy

GB/T 12703.6-2010 Evaluation of Electrostatic Properties of Textiles Part 6 Fiber Leakage Resistance

GB/T 18044-2008 Carpet Static Behavior Evaluation Method Walking Test

Can support automatic update of up to 60 storage records for Z

Built in test voltage: 10V, 50V, 100V, 250, 500, 1000V

Internal test voltage: 10V/50V/100/250/500/1000V can be switched freely

Insulation resistance test is a high resistance test on the insulation of electrical connectors. The unqualified insulation resistance of the connector is mainly caused by contamination such as solder, dust, and moisture on the surface of the insulator, conductive foreign objects inside, or a low dielectric constant of the insulator material. If such connectors are used, it will cause abnormal energy loss of electrical signals and mutual interference between electrical signals in the circuit, resulting in the circuit not functioning properly. Due to the loss of electrical signal energy in the connector, it will inevitably cause the connector to heat up, exacerbating the deterioration of connector performance.

Voltage endurance testing can reflect the safety performance of electrical connectors under actual working conditions. Testing is usually carried out by placing the tested connector in a more demanding environment than its rated operating conditions, and the testing voltage is often several times the rated operating voltage of the connector. In addition to verifying that the electrical connector can operate safely at rated operating voltage, it can also verify the ability of the electrical connector to withstand transient overvoltage in the circuit. The failure of the voltage withstand test of the connector is not only due to the surface and internal reasons of the insulation resistance that are not qualified, as well as the poor quality of the insulation material, but also due to the unreasonable structure of the insulation, which causes insulation breakdown or arcing. Metal parts such as the housing or contact parts of electrical connectors and their end connections have convex bulges with very small curvature radii, which can cause uneven electric fields and cause ionization of surrounding gases, resulting in arcing.

Although the insulation resistance test and the withstand voltage test of electrical connectors are based on the same technology and can reflect the insulation performance of the medium, there are still some differences between them. The former can test the resistance of the insulator of the connector, and the applied voltage for testing is DC voltage, which is often lower than or equal to the rated working voltage of the connector. There is no requirement for the length of the testing time, and there is no damage to the connector. The main parameter for testing is current; The voltage applied for the latter test can be DC voltage or AC voltage, which is often several times the rated working voltage and must withstand the specified time, which may cause certain damage to the connector. The main parameter of the test is voltage, sometimes accompanied by leakage current measurement. AC voltage is mostly used for the withstand voltage test of electrical connectors.

When conducting voltage withstand tests on electrical connectors, special attention should be paid to the following issues:

(1) Due to the irreversible damage of solid dielectric caused by voltage withstand testing of electrical connectors, which has the so-called 'accumulation effect', it is necessary to strictly control the voltage amplitude during voltage withstand testing;

(2) The voltage applied in the withstand voltage test is several times the rated working voltage of the connector, so the testing time cannot be arbitrarily extended;

(3) Due to the small dielectric loss caused by DC voltage, the DC breakdown voltage is higher than the AC peak voltage.

insulation test

Contact arrangement

Multi core electrical connectors come in rectangular, circular, and other shapes. The contact arrangement mainly includes staggered arrangement (Figure 1) and equidistant grid arrangement (Figure 2). The equidistant grid arrangement of contacts is aligned horizontally and vertically, and the insulation spacing is equal. The lower row of contacts arranged in a staggered manner are horizontally offset by 30 degrees and form equilateral triangles with each other. Under the same insulation spacing and insulation cross-section conditions, adopting a staggered arrangement can fully utilize the insulation cross-section and install more contacts. Most multi-core connectors adopt staggered arrangement.