With the increasing popularity of portable backup power supply, there are various styles of portable backup power supply on the market. According to incomplete statistics, many products on the market can not meet the requirements of relevant laws and regulations, and even lead to a variety of security problems.
01 Portable Power Supply
so, what kind of portable backup power supply is safe? Of course, products that meet the relevant laws and regulations and standards of various countries and regions are considered safe products. The earliest standard for portable backup power products comes from the United States. The standard number UL 2743 STANDARD FOR SAFETY - Portable Power Packs has been published in the first edition as early as 2016. It is suitable for built-in batteries and has one or more input and output ports. It can be equipped with various portable power products such as automobile emergency ignition function, lighting lamp, emergency alarm lamp, voltmeter, built-in air pump and other similar functional products, however, products within the scope of UL 2056 are not within the scope of this standard.
A safe portable backup power supply product first depends on the safety of its own key components. Especially when designing products and selecting supply chains, if the safety of key components is fully considered, the surface will increase product development and production costs. In fact, for enterprises that require safe and reliable products, it means fewer detours, reducing product development costs and development cycles, and development costs will naturally be greatly reduced, market risk is controlled, play a faster and better occupation of the first opportunity to win the market.
Next, Ankejie's testing and certification will be interpreted by UL 2743 2nd Edition Revisions: 2020 standard...
02 UL 2743 standard analysis
#1 product range design:
portable backup power supply products, which may contain the following parts:
containing one or more batteries, electrochemical capacitors, electrochemical capacitor modules;
the built-in battery must be a lead-acid battery or a lithium-ion battery;
having one or more inputs and one or more outputs;
with car emergency ignition function, the maximum voltage output does not exceed 24V;
can be used outdoors or short outdoor use and indoor use;
with similar function of air pump, similar function of alarm lamp or lighting lamp,
voltmeters and related instruments;
inverter, car charger adapter, battery charging circuit;
products within the scope of UL 2056 do not fall within the scope of this standard.
#2 critical parts shall comply:
UL 94 & UL 746C Non-Metallic Materials
UL 635 Insulated Cable Clamps
UL 60950-1, UL 1310, or UL 1012 External Power Supply
UL 2089 car charger adapter
UL 1741 or UL 62109-1 inverters, converters, controllers, photovoltaic power system converters
UL 1977 or UL 1839 car ignition start wire connector, car ignition start wire
UL 1839 & UL 758 car ignition start connection line
UL 1839 car ignition start current clamp
UL 498 Class NEMA Receptacle
UL 1977 output connector, output USB socket
UL 758 car charger socket connection line
IEC 60417 No. 5019 Earthing Compliance Marking
UL 1097 Double Insulation System
line Insulation for UL 1581 High Voltage Circuits
UL 510 Insulation Tape
UL 746C Insulation
UL 1004-3 Motor Thermal Protector
UL 810A Electrochemical Capacitor Unit
UL 506, UL 1561, UL 5085-1, UL 5085-2,UL 5085-3 Transformers
UL 796 PWB
UL 1989 Lead Acid Battery
UL 1642 or UL 62133 Li-ion cells
UL 1012 Inverter
UL 60730-1 Safety Circuits and Control Circuits
#3 product Test Items
Power Input Test Input Test
Normal Charging Operation Test Normal charging operation test
Lithium Charging Lithium Charging System Test
Capacitor Discharge Test Capacitor discharge test
Leakage Current Test Leakage current test
Maximum normal load maximum normal load test
power pack ampacity temperature test power supply starting current capability temperature rise test
Dielectric Voltage Withstand Test Electrical strength test
Leakage current test of Leakage Current Following Humidity Conditioning after fiting
Abnormal Operation Tests abnormal running test
Output short test
Reverse polarity of booster cars emergency start line reverse polarity test
Component faults Component failure test
Relay and solenoid burnout Relay and Coil Burn Test
Printed-wiring board abnormal test PWB Exception
Disconnected fan test Disconnect fan
Blocked ventilation test blocking vent
Overcharging test Overcharge test
Internal battery reverse polarity test Internal battery pack Reverse polarity test
Ground continuity ground resistance test
Overload of switches and controls test Switch and Control Device Overload Test
Overload of protection devices protection device overload test
Overload of interlocks interlock overload test
Push-back strain relief test Power cord reverse stress relief test
steel ball impact test
Drop test
high temperature stress relief test
Strength of handle test
Hydrostatic Strength Test Hydrostatic pressure strength test
Rain Test
Test on Electrical Strength Test of Insulating Materials Insulating Materials
Accelerated Aging of Gaskets, Sealing Compounds, and Adhesive Test Gaskets, Sealing Compounds, and Adhesives Accelerated Aging Testing
Metallic Coating Thickness Test Metallic coating thickness test
durability of Permanency of Wrapped Hang Tag Marking Tag
Power Pack Ampacity Test Power Supply Startup Current Capability Test
Back Feed Test Energy Surge Test
Cold drop test (Clamp) low temperature drop test
Dielectric voltage-Electrical strength test of withstand test (Clamp) clip
Secureness test (Clamp) Clamp
Above is introduction of UL 2743 Certification by Ankejie Testing Certification, for reference only, some of the material comes from the Internet and does not represent the point of view of Ancor's detection technology and is responsible for its authenticity. If you are involved in the content of the work, copyright and other issues, please contact us within 30 days, we will delete the content in the first time!
