Environmental Chamber | Climatic Chamber | Thermal Chamber | Salt Fog Chamber - LISUN

Abstract In the ever-evolving technological landscape, ensuring the durability and reliability of electronic devices and components is critical. Environmental test equipment plays a crucial role in product development and quality control, particularly when assessing a product’s resistance to mechanical impacts. This paper delves into the significance of IK testing in environmental test equipment, focusing on the LISUN IK07-10 IK07 to IK10 Pendulum Impact Hammer, a highly effective impact tester. The discussion highlights the role of IK testing in enhancing product reliability, safety, and compliance with international standards. Introduction In industries ranging from consumer electronics to automotive and aerospace, ensuring that products can withstand harsh environmental conditions is vital. Environmental test equipment is designed to simulate these conditions, enabling manufacturers to evaluate the durability and reliability of their products. One of the key components of this testi...

Abstract In the transformer industry, ensuring the reliability and safety of components is critical to maintaining operational efficiency and preventing failures. The LISUN LS2789 transformer comprehensive tester provides a robust solution for evaluating transformers, particularly through Megger testing. This paper explores the role of the LS2789 in advancing transformer testing, highlighting its technical capabilities, impact on industry standards, and contributions to enhancing transformer performance. Through detailed analysis and data-driven insights, we demonstrate how the LS2789 supports the development and maintenance of high-quality transformers. 1. Introduction Transformers are essential components in electrical power systems, playing a crucial role in voltage regulation and power distribution. Ensuring their reliability is vital to maintaining system stability and preventing costly failures. Megger testing, a technique used to measure insulation resistance, is one of the most...

Abstract The rapid advancement in LED lighting technology has driven the need for precise and reliable testing systems. The LISUN LSRF-3 is a comprehensive testing solution designed to meet the rigorous demands of the LED lighting industry. This paper provides an in-depth analysis of the LSRF-3, focusing on its ability to accurately assess LED start-up, run-up, stabilization, and light flicker performance. Through a detailed examination of the system’s features and testing capabilities, we demonstrate how the LSRF-3 satisfies market requirements and supports the development of high-quality LED products. 1. Introduction With the global shift towards energy-efficient lighting solutions, LEDs have become the predominant choice for residential, commercial, and industrial applications. The performance of LED products is critically assessed based on several parameters, including start-up time, run-up time, stabilization time, and flicker. These parameters are essential in determining the qua...

This Indonesia-based product certification body and testing laboratory is one of the leading quality testing and certification institutions in the country. They specialize in providing authoritative certification services for products across various industries, ensuring compliance with both international and domestic quality standards and regulatory requirements. With an experienced professional team comprising engineers, technical experts, and quality control personnel, they are dedicated to offering the most reliable and efficient services to their clients. LISUN recently completed a project providing EMI/EMC laboratory equipment for a client. The client learned about our company through browsing our website and developed a strong interest in our EMI/EMC equipment. The purchased equipment includes: • SG61000-5 Surge Generator with Surge test Desk • ESD61000-2 ESD Simulator Guns with ESD Desk • EFT61000-4 EFT Immunity Measurement with EFT Desk • RF61000-6 RF Conducted Immunity Test Sy...

Temperature rise refers to the increase in temperature of various components of electronic and electrical devices relative to the ambient temperature. When a conductor is energized, its surface temperature rises over time due to the heat effect of the current, until it reaches a stable state. The rated temperature rise of a motor is the maximum allowable temperature rise of the winding under a specified ambient temperature (usually 40°C), which depends on the insulation class of the winding. Evaluating temperature rise not only reflects the heat dissipation condition of the motor but also helps assess whether its thermal management is functioning properly. To verify the lifespan and stability of electronic products, temperature rise tests are commonly conducted on critical components (such as IC chips) by operating the device at temperatures above its rated operating temperature (e.g., 25°C) to a specified temperature (e.g., 70°C), recording the temperature rise above the ambient, and ...

An isolation transformer is a specialized transformer designed for electrical isolation. By providing electrical separation between the input and output windings, it helps prevent the risk of electric shock and ensures electrical safety. Initially, isolation transformers were widely used in the European power industry, and today they find extensive use in electronic industries, industrial and mining enterprises, machine tools, machinery, control power supplies, safety lighting, and indicator light power sources. Typically, isolation transformers have a 1:1 turns ratio, aimed at achieving high electrical isolation and suppressing common-mode interference. 1. Working Principle of Isolation Transformers The core function of an isolation transformer is to provide electrical isolation between the AC power source (primary side) and the load (secondary side). Its primary uses include: Electrical Isolation: Isolates the secondary winding from the ground to prevent electric shock. Voltage Adjus...

In-Depth Analysis of Ball Pressure Test Apparatus and Standardization Guidelines of Ball Pressure Test Ball Pressure Test Procedure and Methods: • Sample Pressure Treatment: Place the sample under a pressure device, subjecting it to pressure for one hour to ensure testing in an unusually high-temperature environment. This step aims to simulate the behavior of the sample under specific conditions. •Heating Phase: Put the sample into a preheated oven, ensuring the internal temperature stabilizes at 125°C±2°C. After one hour of constant temperature treatment, remove the ball applied to the sample’s surface to facilitate subsequent observations. • Cooling Process: Immerse the sample, which has undergone heating treatment, quickly into cold water for approximately 10 seconds to rapidly cool it to room temperature. This aids in observing the sample’s reaction to temperature changes. • Observation of Phenomena: Throughout the process, closely observe any changes, deformations, or other phenom...

As technology advances and electronic devices become more ubiquitous, the impact of lightning surges on electronic equipment is garnering increasing attention. Lightning surges, which refer to transient overvoltages or overcurrents caused by lightning activity on power or signal lines, can cause severe damage to devices. This article explores the effects of lightning surges on electronic equipment and how to effectively protect against them. 1. Generation and Characteristics of Lightning Surges Lightning surges typically occur within an extremely short time frame, often in the microsecond range or even shorter. This transient phenomenon causes voltage and current levels to exceed the normal operating levels of the equipment by more than double. Due to their rapid onset and quick dissipation, lightning surges can inflict damage on equipment in a very brief period. During a surge, the input filter capacitor charges rapidly, leading to peak currents far exceeding the steady-state input cu...

Electrostatic Discharge (ESD) Immunity Testing Electrostatic discharge (ESD) immunity testing is a crucial aspect of electromagnetic compatibility testing. The national standard for ESD immunity testing is GB/T 17626.2, which is equivalent to the international standard IEC 61000-4-2. ESD is a common natural phenomenon, especially prominent in dry environments. For example, when a person walks on a synthetic fiber carpet, the friction between the shoes and the carpet can cause the body to accumulate a charge exceeding 10^-6 coulombs (depending on the resistance between the shoes and the carpet). In this human/carpet/ground system, the average capacitance is approximately tens to hundreds of picofarads (pF), potentially generating voltages up to 15 kilovolts (kV). Studies have shown that different individuals generate varying ESD current pulses, with rise times ranging from 100 picoseconds (ps) to 30 nanoseconds (ns). Electronic engineers have observed that ESD frequently occurs when a ...

This customer is a relatively large street lamp factory with a large -scale street lamp with various power supply, including 70W, 100 W, 150W, 250W and 400W. Before 2017, they did not have their own lamp production lines, and the lamps have always been imported. Later, they expanded the company’s scale and decided to produce lamps themselves, so they also needed relevant testing equipment to detect whether their lamps were qualified. This customer understands our company’s information through search on the website. After understanding the goniophotometer of customers’ needs and communicating with customers, a series of issues have been communicated, and customers need to test color temperature and CRI. Therefore, the goniophotometer without color parameters cannot meet the customer’s requirements. At the same time, we also understand that the maximum size of the customer’s measurement does not exceed 1m. Therefore, we recommend LISUN hot sell LSG-1800ACCD High Precision Rotation Lumina...

The damped oscillatory wave generator plays a crucial role in assessing the immunity of household, commercial, and industrial electrical equipment to disturbances. This device simulates repetitive damped oscillatory waves on power cables, control cables, and signal cables found in high and medium voltage substations, providing an ideal standard and basis for electromagnetic compatibility (EMC) testing. Core Components of a Damped Oscillatory Wave Generator: • High Voltage Source: Provides the necessary voltage. • Charging Resistor: Controls the current. • Energy Storage Capacitor: Stores electrical energy, releasing it to generate oscillatory waves. • High Voltage Switch: Switches the voltage. • Waveform Network: Forms specific waveforms. Additionally, the coupling/decoupling network consists of coupling networks and decoupling networks, primarily used for testing AC and DC power supply ports. The capacitive coupling clamp comprises coupling clamps and coaxial connectors at both ends, ...

Waterproof test chambers are critical tools for evaluating the water resistance of household, commercial, and industrial electrical and electronic equipment. These chambers adhere to international standards such as IEC 60529, GB 4208, GB/T 10485-2007, DIN 40050-9, ISO 20653, and ISO 16750, providing standardized testing for various levels of water protection. The IP (Ingress Protection) rating system includes nine distinct levels, each corresponding to specific testing methods. Below is a detailed overview of the definitions and testing methods for each IP water protection level: waterproof test Equipment JL-X IP Protection Level Definitions IPX1: • Testing Method: Vertical Drip Test • Equipment: Drip Test Apparatus • Sample Placement: Sample in its normal operating position, with the top of the sample no more than 200mm from the drip nozzle. • Test Conditions: Drip rate of 1.0 ± 0.5 mm/min • Test Duration: 10 minutes IPX2: • Testing Method: 15° Tilt Drip Test • Equipment: Drip Test Ap...

With the rapid advancement of digital technology and information systems, computers have become an integral part of both our work and personal lives. While computers offer significant convenience, they have also led to an increase in eye strain and visual impairments. As a result, protecting eye health has become a major concern. The primary concern regarding computer-induced eye strain is blue light exposure. Therefore, blue Retinal Blue Light Hazard Tester is essential for safeguarding eye health. What is Blue Light? Blue light refers to light waves with wavelengths primarily between 400nm and 500nm, within the visible light spectrum of 380nm to 760nm. For industry purposes, blue light is often defined as visible light in the range of 400nm to 500nm. To prevent blue light damage, blue light testers assess the light blocking performance at 400nm and 460nm wavelengths. Impact of Blue Light on the Eyes Prolonged exposure to blue light can cause chronic damage to the retina. Scientific s...

As a key component in the automotive power system, the performance of the drive solenoid valve directly affects the power output, fuel efficiency, and overall operational stability of a vehicle. To ensure that solenoid valves maintain excellent performance under various extreme environmental conditions, high-low temperature cycling tests are of paramount importance. Background of High-Low Temperature Cycling Tests High-low temperature cycling tests simulate real-world conditions by repeatedly exposing solenoid valves to cycles of high and low temperatures. These tests evaluate the valves’ endurance and stability under varying temperature conditions. High-temperature tests typically simulate scenarios where vehicles are exposed to extreme heat, such as prolonged sun exposure in summer or extended high-load operation. Conversely, low-temperature tests replicate conditions where vehicles operate in cold environments, such as starting and running in winter’s low temperatures. LISUN Tempera...

In today’s automotive manufacturing industry, quality inspection is a critical step to ensure the quality and performance of products. As automotive technology advances and consumer demands for vehicle performance increase, testing methods and equipment must continually evolve. High-low temperature cycling test chambers which can simulate extreme temperature environments, have become increasingly important in the testing of automotive products. Simulating Real-World Conditions As an outdoor mode of transportation, cars often face complex and variable climatic conditions, such as the severe cold of winter and the intense heat of summer. These extreme environments pose significant challenges to the performance and reliability of vehicles and their components. High-low temperature cycling test chambers can simulate temperature environments ranging from several degrees below zero to several degrees above zero, providing a testing platform that closely mirrors real-world conditions for auto...

With the widespread use of electronic devices, electromagnetic interference (EMI) issues have become increasingly prominent. As a result, electromagnetic compatibility (EMC) testing has gained significant attention from companies. EMC testing is a complex process involving control techniques such as shielding, filtering, and grounding, as well as balancing and low-level techniques. Before addressing EMC issues, it is crucial to measure the electromagnetic characteristics of samples using testing equipment or systems to determine the appropriate improvement strategies. Challenges in RF Electromagnetic Field Radiation Immunity Testing: RF electromagnetic field radiation immunity is a critical component of EMC testing but presents several challenges for companies due to high costs associated with the required facilities and equipment. This testing requires an anechoic chamber and RF amplifier equipment. The construction of an anechoic chamber demands substantial space and structural suppo...

In recent years, the automotive industry in China has developed rapidly. However, progress in automotive electromagnetic compatibility (EMC) testing standards and regulations has lagged. Nevertheless, recent updates and new standards demonstrate that China is quickly advancing in standard development to keep pace with the automotive industry’s growth. Importance of Automotive EMC With technological advancement and the rapid growth of the automotive industry, the number of in-vehicle electronic devices has increased. Consequently, EMC design standards and regulations have become crucial. Modern vehicles are equipped with various electronic devices, such as multimedia entertainment systems, Bluetooth communication, satellite navigation, braking systems, and airbags. These systems may emit interference signals or malfunction due to high sensitivity when exposed to strong interference zones. Such malfunctions can range from minor inconveniences to severe accidents, posing a threat to life ...