How can you use LISUN tracking test chambers

A unique testing tool used in laboratories is the tracking test device. The Tracking test device is used to gauge a surface’s resistance to a leakage mark under an electric field and contaminated media. It is appropriate for the research, manufacturing, and quality inspection departments of lighting equipment, low-voltage electrical appliances, home appliances, machine tools, electrical motors, electric tools, electronic instruments, and information technology equipment. The insulation material engineering, plastic, and electrical accessory industries can all benefit from using comparative tracking Index test equipment produced by LISUN.

What are test chambers?
Test chambers are enclosed, oven-like devices that can be used to imitate a variety of environmental conditions. You have control over variables like temperature, humidity, and light in a test chamber. They are utilized in many different sorts of industries, including polymer testing, electrical components, and aeronautical engineering. The best product range for your needs will depend on the parameters you want to control, the level of programming control you desire over these parameters, and any additional features your application calls for. You can find all these features in LISUN tracking test chambers.

What is LISUN tracking test chamber?
The LISUN test apparatus is created and assembled in accordance with the specifications of the applicable standards, such as IEC 60112, IEC 60695, and others. It is used to determine the relative resistance to tracking performance of solid electrical insulating material when the surface is exposed to water containing impurities and under the influence of an electric field.

If environmental moisture and impurities have an impact on electrical products, leakage may occur on the insulation between live parts with different polarities or between live parts and grounded metal. The arc that results from this leakage may result in an electrical short circuit, electrical erosion from discharge, or even a fire. To measure and evaluate the relative resistance to tracking when the insulator is under the influence of electricity and contaminants in water-containing, the tracking test is a destructive test to insulating materials that simulates the aforementioned scenario.

TTC-1 Tracking Test Chamber

This equipment uses a cutting-edge PLC control system, touch-screen humanized buttons, high-quality components, and professional technology, which results in a product with exceptional quality, reliable performance, and a lovely appearance. The efficiency of the test is further improved by the automatic drip timing device, accurate electrode pressure sensor display, simple operation, and high precision, which places our equipment in the forefront of comparable goods.

Testing Standards
The TTC-1 Tracking Test Chamber, also known as the Leakage Tracking Test Apparatus, is designed in accordance with IEC60335-1 clause 29.2 and Annex N, IEC60065:2014 clause 13.4, IEC60598-1, IEC 60884-1, UL746A, ASTM D3638-92, IEC60695 and IEC60112, and GB4207 to assess the degree of protection against the formation of conducting paths in solid By placing drips between electrodes, this approach replicates tracing currents on insulation material. Insulating materials can become stressed out and catch fire if they are conductive and are exposed to moisture and dirt during routine use.

What is the working principle of such apparatus?
The Tracking test device is situated between platinum electrodes of the appropriate size (2 mm 5 mm) on the surface of a solid insulating material. Using a specific voltage, timing it for 30 seconds at a height of 35mm A conductive liquid (0.1 percent NH 4 CL), Comparative tracking test device, is used to measure the electric trace index (CT1) and electric trace index (ETI) and evaluate the leakage resistance of solid insulating surface under the combined action of electric field and wet or dirty medium (PT1).

To evaluate the electrical trace’s index in relation to the insulation material and to meet DIN EN 60112 test requirements, one uses the comparative tracking index, or CTI. The CTI simulates monitoring the liquid drop current between two electrodes. Commonly used insulation materials could be exposed to moisture or dust, which, if done, could increase the risk of stress or fire.

This component complies with DIN EN 60 112, IEC 60 112, or part 1 of VDE 0303. Test passes both the KA technique (Amount of falling material/Depth of crawler tunnel) and both (Until the voltage of the 50th drop). Values for the CTI and PT1 will be determined. The ability to combine enables precise control over test voltage, test current, switching time, drop size, and drop count.

What are LISUN tracking test chambers used for?
This testing device is appropriate for evaluating the materials, electrical and electronic items, and home appliances’ resistance to electric tracing and corrosion. By assessing the resistance to electric tracing and corrosion of liquid pollutants and oblique samples at power frequency (48HZ-62HZ) grade, the resistance to electric tracing and corrosion of electrical insulation materials is assessed. Its design complies with GB/T6553-2003 and IEC60587-1984 regulations.

Conditions to be followed while using such equipment
When using the equipment, it must be guaranteed that there are no significant electromagnetic radiation sources nearby. The area around the apparatus is big enough for maintenance. There are 232°C in the air. AC220 / 50HZ air pressure is between 86 and 106 kPa. Voltage variation is between 220V and 10%. The permitted range for frequency variation is 50 HZ 1 percent. The equipment must have a power switch on the installation site with the appropriate capacity, and the switch must be used solely and independently for the equipment. The ambient should be kept between 0 and 45 °C when the equipment is not in use.

What methods can be used to test out leaks?
Some of the most popular leak test techniques are listed below:

Chamber
This leak test technique is used to find flaws that are creating leaks in sealed environments, such as a device or packaging, where there is no opening to provide pressure for leak testing.

Strain crack
The “weeping” in valves can be found using this leak test technique and a downstream sensor monitor.

Vacuum or Pressure
The pressurization of a test object and a reference volume are used in this leak test technique. The difference between the two will shrink if there is a leak. This entire process is automated.

Burst
This leak test technique ramps pressure in either a destructive or non-destructive test to determine the point at which the device will rupture (i.e., burst).

Occlusion
With the help of this leak test technique, faults that are the cause of leaks were found by locating blockages in the gas’ flow path.

Pressure loss
The pressure change of an object or system under positive pressure is used in this leak test method to find flaws that are responsible for leaks.

Vacancy decay
The pressure change of an object or system under negative pressure is used in this leak test approach to find flaws that are producing leaks. Low pressure is often used as the leak test pressure limit. The pressure must be at least 15 psi or 25% of the design pressure according to the majority of codes for leak test pressure restrictions (whichever pressure is less).

Specifications of Tracking Chambers
Platinum electrodes in the shape of rectangles are used. Each electrode has an adjustable force of 1.0-0.05N that it can apply to the sample. A variable testing voltage of 100-600V (48-60Hz) is available. The voltage decreases won’t be higher than 10% when the short-circuit current is 1.00.1A. If a short-circuit current is present during testing that is greater than 0.5 A, and lasts for two seconds, the equipment will immediately cease the test.

In other words, the sample failed the test. The liquid drop device has an adjustable liquid height of 30-40mm and a liquid volume of 44-55 droplets per cm3. Drops happen every 30 to 5 seconds (configurable). Internally, it measures 800x800x800mm, and outside, it measures 1120x520x1250mm (customers may request special sizes).

Precautions to take before and during testing
This machine requires a well-grounded power source because its input power is 1.5KW, 220V, and 50H. To avoid receiving an electric shock during the test, do not open the viewing window. The test chamber should be cleaned when the test is finished, and the exhaust fan should be opened. To stop the solution from splashing, switch off the fan after adding the liquid. The fan speed may be changed, so please adjust the wind speed in accordance with various standards.

To avoid corroding or experiencing electrical failure, the container is properly positioned and slanted. Maintain the dripping line’s smoothness and clean the dripping system frequently. Please be aware that platinum electrode is both pricey and prone to damage. If the electrode is corroded, it needs to be re-measured and re-ground (these are the wearing parts which are not covered by the warranty).

What considerations are to be taken while conducting leak tests?
As an NDT technique, a leakage inspection has certain special considerations because it calls for the inspectors to apply pressure to an object in order to find leaks. An outline of important considerations is given below.

Reasonable leakage rate
When doing leak testing, it’s critical for inspectors and maintenance staff to be aware of the permissible leak rate for a given item or system. Not every leak needs to be fixed; others may only need more observation or possibly no action at all. There are usually regulations outlining permissible leak rates for certain goods and toxins in various businesses.

Considering manufacturing
It’s crucial to take into account the original purpose for which a system, component, or item was created before conducting a leak test. Manufacturers may have been required by the intended use case for a certain thing to have designed it in such a way that it will either retain or permit liquids to travel through it. For instance, an IV may be made to retain liquids inside it and a car part may be made precisely so that gases cannot escape from it.

The material factors
The material of the object will affect a leak test and should be taken into account as well. The degree to which a material is too pliable or brittle can directly affect how the application of pressure will alter the object, causing it to expand or change shape in another way that should be taken into account while organizing a leak test.

Medium factors
When organizing a leak test, the substance that the object is intended to hold must be taken into account. The sizes of molecules vary amongst various substances. Knowing the difference between a flaw that would be considered acceptable and one that would be large enough to let a particular liquid or gas escape is crucial when conducting a leak test.

Pressure is a relevant factor since various compounds will react differently to various pressure ranges. While a pressure range that is too low could produce ambiguous findings, a pressure range that is too high could potentially harm the object being tested.

FAQs
What is leak testing and when does it occur?
Inspectors conduct leak testing to ascertain whether a system or object is operating within a predetermined leak limit.
When an object has a flaw, such as a hole, crack, or other type of flaw, the liquid or gas it is holding can leak out. This is known as a leak. Pressure is used in leak testing to identify these flaws so that they can be fixed during routine maintenance procedures.

What kind of defects are you looking for in leak testing?
Inspectors will be looking for flaws such as: • Cracks • Holes • Weak seals • Other flaws or imperfections that may be causing a gas or liquid to leak out of an object or system in leak testing materials.

What industries commonly use such testing?
The following sectors regularly incorporate leak testing into their maintenance procedures:
Automobiles, consumer products, packaging, medical devices, and sealed electronics

Lisun Instruments Limited was found by LISUN GROUP in 2003. LISUN quality system has been strictly certified by ISO9001:2015. As a CIE Membership, LISUN products are designed based on CIE, IEC and other international or national standards. All products passed CE certificate and authenticated by the third party lab.

Our main products are Goniophotometer, Integrating Sphere, Spectroradiometer, Surge Generator, ESD Simulator Guns, EMI Receiver, EMC Test Equipment, Electrical Safety Tester, Environmental Chamber, Temperature Chamber, Climate Chamber, Thermal Chamber, Salt Spray Test, Dust Test Chamber, Waterproof Test, RoHS Test (EDXRF), Glow Wire Test and Needle Flame Test.

Please feel free to contact us if you need any support.
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