Jacky

Jacky

Marketing Manager of Lisun Group

ISO 17025

ISO 17025 ISO17025 is the international standard for laboratory accreditation services; the latest version is released in May, 2005. The full name of ISO/IEC17025:2005-5-15 is Accreditation Criteria for the Competence of Testing and Calibration Laboratories. ISO17025 standard is the laboratory management standard formulated by the international Standardization Organization ISO/CASCO (Conformity Assessment Committee). Internationally the organization […]

We finished another customer’s Installation & training in Turkey

We finished another customer’s Installation & training in Turkey  This is a big lighting company in Turkey. They purchase a set of LSG-1800BCCD High Precision Rotation Luminaire Goniospectroradiometer, EMI-9KA EMI Receiver System and LMS-6000 Portable CCD Spectroradiometer from LISUN this time. They are satisfied with our service and said there would be other projects in […]

Introduction of Conducted Immunity Testing

Introduction of Conducted Immunity Testing This paper is a brief introduction and description for conducted immunity testing which based on IEC 61000-4-4 fast transient burst test, IEC 61000-4-5 lightning surge test, IEC 61000-4-11 voltage cycle drop test and IEC 61000-4-12 ring wave test.   IEC 61000-4-4 establishes a common and reproducible reference for evaluating the immunity […]

LISUN Engineer do installation and training in Algeria

LISUN Engineer do installation and training in Algeria   This customer inquiry three months ago, and visit our company about two months ago to learn about our product deeply. They are a pretty LED lighting manufacture, and we believe that there would be many orders between us in the future.   After the visiting, they […]

Five kinds of LED Efficiency

Five kinds of LED Efficiency Compare LED efficiency and life, the conception of efficiency is more complex. Firstly, there are three kinds of general efficiency, please check the Diagram 1. Luminous Efficiency(lm/W) Conversion Efficiency lamp beads Connect lamp beads to DC power source directly, the rate of lamp beads flux and consumption power Connect lamp […]

LISUN Engineer Visit Turkey to do Installation & Training

LISUN Engineer Visit Turkey to do Installation & Training   LISUN’s after-sale service is absolutely the first class! The quality of our service won’t change due to the size of the order. Such as this customer, they purchased one set of LPCE-2 Spectroradiometer & Integrating Sphere LED Test System, LISUN arranged an engineer dedicated to […]

LISUN engineer Joye do installation and training in Korea

LISUN engineer Joye do installation and training in Korea   This time, our young engineer Joye Yang set off to do installation and training for our customer in Korea. This customer has purchased some instruments from LISUN before and they are very satisfied with our products and service.   They purchased LSG-1700B Rotation Luminaire Goniophotometer […]

Automotive LED Light

Automotive LED Light In China, cars are becoming more and more popular. With the development of automobile industry, automotive lights are also developing. Automobile lights have experienced Incandescent Light, Halogen Light and HID(High-Intensity Discharge) Light, to the current era of Automotive LED Light. Automotive LED Light has many advantages: Energy-saving and Environmental Protection: LED directly […]

LISUN participate in the largest Lighting Fair in Russia – Interlight Moscow

LISUN participate in the largest Lighting Fair in Russia – Interlight Moscow   Interlight Moscow is held from November 7 to 10, 2017,  Interlight Moscow is not only the biggest show in Russia and Eastern Europe covering the whole range of products related to lighting, electrical engineering, home and building automation, but also the largest […]

Reasons of error for LED Lamp Testing

Reasons of error for LED Lamp Testing From the perspective of the LED product structure and technology development, the quality criteria of LED product mainly consider the parameters of the optical properties, electrical properties, thermal properties, radiation safety and life. LED optical properties mainly involve luminous flux, radiation flux, luminous efficiency, chromaticity coordinates, correlated color […]

Our engineer visit our old customers in Switzerland for product maintenance

Our engineer visit our old customers in Switzerland for product maintenance   Jacky visited our Swiss client to do product maintenance when he do installation and training for new clients here. The customer purchased some products from LISUN before. Such as the Integrating Sphere & Spectroradiometer Test System, Goniophotometer, WT2080 LED Drive Tester, LS9956 Automatic […]

LISUN engineer Jacky visit new customers in Spain

LISUN engineer Jacky visit new customers in Spain   Our engineer Jacky Jiang visit Spain to do installation & training for clients this month. And he also visited several local potential customers during this period.   This customer is a luminaires manufacturer, they are very interested in our LED test instruments. After learning that our […]

LISUN Participate in the 2017 Hong Kong International Lighting Fair

LISUN Participate in the 2017 Hong Kong International Lighting Fair The Hong Kong International Lighting Fair has become the largest industry exhibition in Asia, and the second largest in the world. LISUN participates this exhibition every year from 2011.   The huge quantity of buyers and exhibitors, as well as the constant innovation of the […]

What is the difference between IEC/ EN 60825-1 and IEC/ EN 62471?

What is the difference between IEC/ EN 60825-1 and IEC/ EN 62471?   IEC 60825-1: 2007 is a standard issued by the European Union, applicable to safety of laser products emitting laser radiation in the wavelength range 180 nm to 1 mm. Its scope of application would be only applied to LASER products after September […]

LED Lamps Aging and Life Test

LED Lamps Aging and Life Test Many customers need aging LED lamps, but do not have a clear concept of aging test and life test.   Aging test usually use aging test racks. What is aging test rack? Aging rack is dedicated to simulate the products in real conditions involved in the use of various […]

LISUN Engineer do Installation & Training in Brazil in January 2018

LISUN Engineer do Installation & Training in Brazil in January 2018 In the early January 2018,LISUN Engineer stay in Brazil to do Installation & Training here. We talk about our another customer in Brazil this time. This customer purchase a LSG-1700B Rotation Luminaire Goniophotometer (Big Size) and a CH338 Digital Torsion Meter from LISUN. Finally we share some photos […]

LISUN engineer visit Mexico to do product maintenance

LISUN engineer visit Mexico to do product maintenance   LISUN is recognized by more and more international customers, and they help us do promotion. Because we provide high-quality products and services for them. LISUN can arrange the installation and training to our customer’s company according their requirement, and also arrange the product maintenance for our […]

IEC 61000-4-5:2014 Surge Immunity Test

IEC 61000-4-5:2014 Surge Immunity Test The International Electrotechnical Commission (IEC) has published IEC 61000-4-5:2014, “Electromagnetic Compatibility (EMC) – Part 4-5: Testing and Measurement Techniques – Surge Immunity Test.” “IEC 61000-4-5:2014 relates to the immunity requirements, test methods and range of recommended test levels for equipment with regard to unidirectional surges caused by over-voltages from switching […]

Another Italian customer received LISUN’s Goniophotometer

Another Italian customer received LISUN’s Goniophotometer LISUN’s business has covered more than 100 countries around the world. This Italian customer is a signal light supplier, they purchased the LSG-1950S Goniophotometer for Automotive and Traffic Signal Lamps and some small products from LISUN this time. Below is some photos here: Figure 1: The customer and our […]

IP Level Test Introduction

IP Level Test Introduction IP is the abbreviation of Ingress Protection. IP grade is the protection level for electrical equipment shell against the foreign body intrusion. It comes from the international electrical commission standard IEC 60529 which was also used as the national standard of America in 2004. In this standard, for the protection level […]

LISUN participate the most influential lighting exhibition in INDIA – LED Expo Delhi

LISUN participate the most influential lighting exhibition in INDIA – LED Expo Delhi   The LED Expo Delhi is one of the most influential exhibition for professional lighting products and technology, it is a 3 day event being held from 30 November to the 2 December 2017 at the Pragati Maidan in New Delhi, India. […]

Installation & Training in Czech

Installation & Training in Czech After completing installation training in Denmark in August 2016, our engineer went to the Czech Republic. This time we visited NBB BOHEMIA s.r.o.. The customer is specialized in lighting technology research & development and distributing for all kinds of luminaires and lighting products in Czech and Europe with a long […]

LED Luminescent Spectrum

LED Luminescent Spectrum   Spectrum is the relative distribution of wavelength and light intensity. The spectrum of LED is generally monochromatic LED, such as blue LED with a peak wavelength of 470nm, with shorter peak wavelength ultraviolet area and with longer peak wavelength green areas as the determination limitation of light intensity.

Integrating Sphere Development

Integrating Sphere Development   Integrating Sphere is used for flux measurement, which can make test result more reliable. Integrating Sphere can reduce the measurement error caused by the shape of light, divergence angle and responsiveness difference in different location on detector. Let us learn more details about the development of Integrating Sphere manufacture technology. Picture […]

Jacky Installation training in Poland

Jacky Installation training in Poland   This Polish customer purchased a High & Low Temperature and Humidity Chamber, IK level Tester and Dustproof Testing Machine from LISUN this time.

Introduction of EMC Testing

Introduction of EMC Testing   EMC (Electro-Magnetic Compatibility) refers to the ability of a device or system to function in its electromagnetic environment and does not constitute an unacceptable electromagnetic disturbance to anything in that environment. EMC is an important indicator of product quality.

Brief introduction of CE certificates

Brief introduction of CE certificates In recent years, the CE marks are more and more widely used in the market of European economic area (Member states of the European Union and the European Free Trade association, except Switzerland). More customs of different countries set out the

LISUN engineer do installation & training in Mexico in December 2017

LISUN engineer do installation & training in Mexico in December 2017   In December   2017, LISUN engineer went to Mexico to do installation and training for customer. The customer purchased LSG-1800B High Precision Rotation Luminaire Goniophotometer from LISUN. LSG-1800B Goniophotometer is automatic goniophotometric instrument for luminous intensity distribution measurements with facility for turning the light source. The […]

What are EMC tests?

What are EMC tests?   With the widespread use of electrical and electronic equipment, the problem of electromagnetic disturbance has also brought electromagnetic pollution.   EMC(Electro Magnetic Compatibility) refers to the ability of a device or system to operate within its electromagnetic environment without incurring unacceptable electromagnetic interference to any device in its environment.   […]