8. Accessibility of Live Parts 8.1 An electrical part of a heater shall be so located or enclosed that protection against unintentional contact with uninsulated live parts will be provided, except that this requirement does not apply to a visibly glowing open-wire element and the connections immediately adjacent to the element. See 3.1, 8.2,32.7 and 32.14. Insulated motor brush caps do not require...
The burst generator is also called burst tester, is a kind of EMI filter, and its name comes from the “Electrical Fast Transient/burst” (abbreviated as EFT) experiment. The EFT experiment is an immunity test experiment, which is divided into four levels according to the IEC61000-4-4 standard. Different levels of EFT generators have different injection voltages or cargo coupling voltage...
Introduction To guarantee their safe and dependable performance under harsh environments, aircraft components and systems must undergo extensive testing and validation within the aerospace industry. Aerospace testing relies heavily on altitude condition modeling, which entails recreating the low-pressure and low-temperature settings seen at high altitudes. Environmental test chambers are essential...
From October 27th to October 30th, 2023, LISUN participated in the world -renowned Hong Kong International Lighting Fair（Autumn Edition）. This exhibition is an important event in the lighting industry. It has brought together many well -known enterprises and professionals at home and abroad to show the latest innovative technologies and products. LISUN employee taken picture at Lighting Fair A...
19.15 For battery-operated appliances incorporating a manual voltage selector switch intended to select battery voltage, this switch is set to the lowest voltage position and the highest voltage is applied. B.19.1 The supply terminals of a battery-operated appliance having an indication of polarity are connected to the battery terminals of the opposite polarity, unless such a connection by the use...
In addition to components such as compressors, pressure accumulators, condensers, and dryers, the refrigeration system of the high and low temperature test chamber also has several parts such as capillary tubes, solenoid valves, evaporators, and pressure protection. The combination of mechanical refrigeration and liquid nitrogen refrigeration is used. It consists of two parts and each part is a re...
Introduction Accurate diagnosis and treatment planning are only possible with the use of medical imaging, which plays a crucial role in contemporary healthcare. The quality of imaging findings and patient safety may be jeopardized, however, if electromagnetic interference (EMI) from outside sources disrupts the dependable functioning of medical imaging equipment. Efficiently assessing and mitigati...
Through the test of the UV aging test chamber, the performance change of the material under different ultraviolet radiation can be evaluated, such as the color change of the material, the change of the surface quality, the change of physical properties, etc., so as to carry out the development and improvement of subsequent products. Widely used in plastics, coatings, rubber, textiles, cosmetics, a...
Introduction In order to guarantee the dependability and safety of medical equipment, corrosion resistance is essential. Durability and performance testing of materials and coatings used in medical devices is crucial since patient health is at risk. Corrosion testing for medical equipment relies heavily on salt spray test chambers, which provide a controlled atmosphere to mimic severe circumstance...
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