Abstract Light-Emitting Diode (LED), as a new generation of solid-state lighting source, is widely used in various fields due to its advantages of high efficiency, energy saving and environmental protection. Its luminous flux maintenance rate and aging life are core indicators for measuring product quality. This paper takes the LISUN LEDLM-84PL LED Optical Aging Test Instrument as the research object. Designed in accordance with the IES LM-84 and TM-28 standards, this instrument integrates high-low temperature environment simulation, photoelectric parameter collection and life prediction functions. The paper elaborates on the design basis, hardware composition and working principle of the instrument, focuses on analyzing the life calculation method based on the Arrhenius model and TM-28 standard, and verifies the instrument performance through practical test cases. The research shows that the instrument can realize long-term stable monitoring of photoelectric parameters and rapid aging...
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Abstract Against the backdrop of the rapid development of the semiconductor industry, the problem of damage to semiconductor devices caused by electrostatic discharge (ESD) has become increasingly prominent. The Human Body Model (HBM) and Machine Model (MM) are the main sources of electrostatic threats faced by semiconductor devices during production, transportation, and use. This article focuses on the LISUN ESD-883D Electrostatic Discharge Simulator (HBM/MM), elaborating in detail on its design principles, compliance with international and domestic standards, equipment features, specifications, and applications in ESD susceptibility testing of semiconductor devices such as LED chips, transistors, and ICs. Through a comprehensive analysis of this equipment, this article demonstrates its important role in ensuring the quality and reliability of semiconductor devices, providing a reference for relevant testing work in the semiconductor industry. Keywords Electrostatic Discharge Simulato...
Abstract With the increasing complexity of electrical and electronic systems, the reliability of power supply lines and internal connecting cables under transient interference has become a critical concern. Natural lightning-induced surges and high-capacity inductive-capacitive load switching can generate high-energy transient disturbances, which may cause irreversible damage to sensitive components. This paper focuses on the surge test generator as a core tool for evaluating the surge tolerance of these components, with a specific analysis of the LISUN SG61000-5 Surge Generator. By adhering to international standards such as IEC 61000-4-5, this equipment provides a unified and reliable basis for surge immunity testing. Experimental data from tests on typical power cables and internal connectors are presented to verify the effectiveness of the surge test generator in identifying vulnerability points and guiding product optimization. 1. Introduction Electromagnetic Compatibility (EMC) i...
Abstract Glow wire flammability testing is a critical evaluation method for assessing the fire safety of polymeric materials used in lighting devices, electronic products, and household appliances. This study aims to systematically investigate the glow wire flammability performance of common engineering plastics, focusing on ignition temperature (GWIT), flammability index (GWFI), and combustion behavior. The experiments were conducted using the LISUN ZRS-3H Glow-wire Test Apparatus, which complies with international standards including IEC 60695-2-10 and UL 746A. Three representative materials—glass fiber-reinforced polycarbonate (PC-GF30), polybutylene terephthalate (PBT-GF30), and polyethylene terephthalate (PET-GF30)—were tested under controlled conditions. Results indicate that PC-GF30 exhibits the highest GWIT (825°C) and GWFI (900°C), followed by PBT-GF30 (GWIT: 725°C; GWFI: 800°C) and PET-GF30 (GWIT: 675°C; GWFI: 750°C). The LISUN ZRS-3H apparatus demonstrated high precision in ...
Abstract Fire and flammability testing plays a critical role in ensuring the safety of electrical equipment and combustible materials, as small flames resulting from internal faults can trigger catastrophic fire hazards. The LISUN ZY-3 Needle Flame Test Apparatus is a specialized instrument designed to simulate such fault-induced small flames and evaluate ignition risks. This paper elaborates on the design principles, technical specifications, testing procedures, and application scenarios of the LISUN ZY-3, with a focus on its compliance with international standards. By analyzing its structural components and performance parameters, the paper demonstrates its significance in fire and flammability testing for lighting equipment, low-voltage electrical appliances, insulation materials, and other products. Practical test cases and data are presented to verify its reliability and accuracy, providing a reference for researchers and industry practitioners in material safety evaluation. 1. In...