Quotation for Distributed Control Scheme of LED Display Screen in Huqiu District, Suzhou

Description :

　　Indoor LED display screen in hilly area

　　Technical specifications for conventional indoor small spacing

　　1. Compatible models: 320 * 160 series P0.99, P1, P1.25, P1.379, P1.538, P1.667, P1.839, P2, P2.5, P3.076

　　According to the provisions of GB4943.1-2011, the temperature of each touchable point of the LED display screen should be tested with a thermometer after 30 minutes of full load operation. When the LED display screen reaches thermal equilibrium during normal use, the temperature rise of the metal part of the screen structure should not exceed 20K, and the temperature rise of the insulation material should not exceed 30K (provide CNAS and CMA certified test reports issued by third-party testing agencies)

　　2. Apply a test voltage of 50Hz basic sine wave and 1500V (effective value) between the AC power input terminal of the product and the metal frame or accessible metal structural components (connected to the protective grounding) for 1 minute. During the test, there should be no insulation breakdown (provide CNAS or CMA certified test reports from third-party testing agencies)

　　3. The insulation resistance between the product power plug or power input terminal and the exposed metal parts of the shell should be ≥ 100M Ω under normal atmospheric conditions and ≥ 2M Ω under humid and hot conditions (provide CNAS or CMA certified test reports issued by third-party testing institutions)

　　According to the provisions of GB4943.1-2011, LED display screens should have protective grounding terminals, and the grounding resistance of the overall system of the display screen should not exceed 1 Ω (provide CNAS and CMA certified testing reports issued by third-party testing agencies)

　　According to the SJ/T11281-2017 testing method for light-emitting diode (LED) display screens, the ground leakage current between the power cord of the test sample and the metal frame should not exceed 3.5mA/m2 (AC effective value) at 1.1 times the rated power supply voltage (provide CNAS and CMA certified testing reports from third-party testing agencies)

　　6. According to the method specified in GB/T2423.1-2008, the test sample is unpackaged and not powered. After being stored in a test box at a temperature of -40 ℃ to 80 ℃ for 48 hours, it can work normally without any abnormalities. Provide CNAS and CMA certified testing reports issued by third-party testing institutions

　　7. ADC12 die-casting aluminum alloy design, one-time integral die-casting, fanless, dustproof, and silent design (noise ≤ 5dB) (provide testing reports issued by third-party testing institutions recognized by CNAS and CMA)

　　According to GB/T11463-1989, the average time between failures (MTBF) of LED display screens should be ≥ 50000 hours (provide a test report issued by a third-party testing agency recognized by CNAS and CMA)

　　9. The module PCB is made of FR-4 material, with integrated light and driver. The circuit and surface treatment are designed with multi-layer blind holes and gold deposition process, which comply with CQC18 standards (provide testing reports issued by third-party testing institutions recognized by CNAS and CMA)

AfterSalesService :

• Suzhou Huqiu District LED Display Screen