Abstract The improvement and spreading of the LED filaments lamps requires reliable and accurate methods and instruments for junction temperature measurement. Based on the forward voltage methods, the measurement process and the equipment of LED filaments lamps are introduced. And the dependence of junction temperature on various factors are discussed. General Though the LED filament lamp technolo...
Recently, the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China and the National Standardization Administration approved and issued the version GB/T 4208-2017 “Enclosure Protection Level (IP Code)”. This version will replace the old GB/T 4208-2008 version and it has been officially implemented on February 1, 2018. We...
IESNA Illuminating Engineering Society of North America and ANSI American National Standards Institute jointly issued ANSI/IES LM-80-15 IES Approved Method On June 26, 2015: Measuring Luminous Flux and Color Maintenance of LED packages, Arrays and Modules. Full Chinese name: LED package, array, module luminous flux and color maintenance test method, and can accept AC constant voltage, DC constant ...
In the field of lighting, fluorescent lamps as a traditional light source have been widely used in the past few decades and have been widely used in commercial and civilian places such as shopping malls, schools, offices, parking garages, and factories. Fluorescent lamp is essentially a low-pressure gas discharge lamp, which exhibits negative resistance characteristics during operation, and requir...
Glow Wire Test introduction: The glow wire testing uses simulation technology to assess the fire hazard of thermal stress caused by heat sources such as hot components or overload resistors in the use environment in a short time. It is used to simulate the ignition source of the heat source is the glow wire heated by electricity . Standard: The ZRS-3H Glow-wire Test Apparatus is according to IEC60...
LISUN will irregularly update the software of LSG-1800BCCD/LSG-1700BCCD/LSG-5000CCD. However, since each spectroradiometer in the system has its own independent hardware data file, we need to back up the hardware data file before updating the software (The step 2 below). The software cannot be installed without the hardware data file, and the use of the wrong hardware data file will cause deviatio...
LISUN will irregularly update the software of LPCE-2（LMS-9000）Spectroradiometer & Integrating Sphere Test System. However, since each spectroradiometer LMS-9000 in the system has its own independent hardware data file, we need to back up the hardware data file before updating the software (The step 2 below). The software cannot be installed without the LMS-9000 hardware data file, and the ...
The test requirements for the IP level test of road vehicles lamps mainly refers to ISO20653, DIN 40050-9, and ISO12103, which defines the IP level, test requirements and related tests. The IP code used in the ISO20653 is in accordance with IEC60529, and the specific code “K” that describes the special requirements of road vehicles in ISO20653 is not included in IEC60529. The following...
Equipment introduction: Automatic Electrical Safety System can test for Withstand Voltage (AC/DC), Insulation Resistance (IR), Leakage Current (LLC), Ground Resistance (GR) and Power. Application: It is used for luminaries, home application and motor tools safety test in production line or R&D Lab. Standard: The LS9955/LS9956 Automatic Electrical Safety Tester is according to GB4706.1, IEC/EN...
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