20W Switching Power Supply Driver 5v4a Lighting Transformers for LED Billboards Displays Luminescent Characters | Лампы и освещение

20W Switching Power Supply Driver 5v4a Lighting Transformers for LED Billboards, LED Displays, Luminescent Characters

Precautions for switching power supply:

1) The power cord of the metal shell is generally connected with the ground (FG) and should be grounded reliably to ensure safety. The power cord of the metal shell should not be connected to the zero line by mistake. 2) before installing the test run, please check and proofread the connections on the terminals again to ensure the input and output, the AC and DC, the single-phase and multiphase, the positive and negative voltage values and current values, and so on. For high-power supply, there are three or more than three "+" input terminals and "-" output terminals, in fact they belong to an output polarity, only for the convenience of the operation of the user.   Product features: The use of imported components, high reliability. Built-in WMI filter, good anti-jamming performance. The DC ripple is small and the working efficiency is high. Design soft start circuit, AC surge current limit. The working temperature is low and the service life is long. The input voltage range is wide and meets the applicable global standards. Good insulation performance, high resistance to electricity. It has the function of short circuit, overload, overvoltage and protection.   This power supply is suitable for LED billboards, LED displays, luminescent characters, light bars, lamp touch groups, security, monitoring, and so on!   Full voltage input Miniaturization Protection function Short circuit / overload / over voltage 100% full load aging test Input voltage & frequency range----------85~264VAC/47~63Hz Start surge current ---------------20A@120VAC (cold start) Output adjustment range --------------- ±10% (rated output voltage) Overload protection -------------------105%~200% (rated load), self-recovery Overvoltage protection -------------------115%~135% (rated output voltage) Short circuit protection ------------------- self-recovery Output start time ---------------≤2S@120VAC ≤1.0S@230VAC Output hold time ---------------≥10mS@120VAC, ≥20mS@230VAC Insulation strength ------------------- Input - Output: AC1500V, 1min                             Input - housing: AC1500V, 1min                             Output - Case: DC500V, 1min Working environment ------------------ -10 ° C ~ 50 ° C; 20% ~ 90% RH (no condensation) Safety Standard ------------------- Design Reference EN/UL60950 Electromagnetic compatibility standard --------------- Design reference EN55022 Class B;  EN61000-4-2/-3/-4/-5/-6/-11   PAYMENT/SHIPPING  Import duties, taxes and charges are not included in the item price or shipping charges. These charges are Buyer’s responsibility. Please check with your country customs office to determine what these additional costs will be prior to bidding/buying. For custom clearance procedure. If you need help, please let us know.   Remote area addition fee （FedEx & DHL） A Remote Area is defined as a post code or in the absence of post code, a suburb /town name that is difficult to serve. A delivery to one of the following post codes and towns would attract a Remote Area surcharge.   For Import Express shipments, a pickup from one of the same post codes and towns would attract a Remote Area surcharge. Please refer to your service guide for the surcharge amount in local currency       WARRANTY/QUALITY: CE certified. 100% QC before shipment. Standard 1 year product warranty Warranty will cover only items that are deemed to fail under normal usage. Accidental damage due to environmental causes or incorrect usage and installation will not be covered in warranty (but still serviceable) Contact us directly for warranty issues Buyer is responsible for warranty return shipping.