source:Industry News Popular:adapter release time:2021-06-18 09:30:54 Article author:sznbone
First of all, for the two power cables used in parallel, it is best to have the same cable model and specification length, so that when the cables are energized, the various parameters of the two power cables are basically close, the current carrying capacity is basically evenly distributed, and there will be no single cable overload. , A large area of fever and burnt phenomenon occurred in advance.
Secondly, the distance between cables running in parallel should be appropriately enlarged, so that when a cable fails, it will not affect the cables used in parallel nearby and burn down at the same time, which reduces the power economic loss of the enterprise to a certain extent.
Thirdly, power cables run in parallel. The contact and connection status of the wire noses at both ends of the cable and the switch contacts should be checked frequently to ensure that the cable and the switch are well connected, because most of the cables used in parallel are above 35mm, and the conductor resistance per kilometer is Below zero ohms, the magnitude of the resistance is about 10 -1. If the cable nose is not in good contact with the switch, it is easy to cause a certain phase or phases of a cable at the switch to have too large contact resistance, resulting in two cables carrying capacity The distribution is uneven. The current cable customers take into account economy and grid design, and the selection of cable models and specifications will not leave too much current carrying margin. When the contact resistance at the nose of the cable is too large, first, it will heat up in continuous use. Burning out, in addition, causing the current carrying capacity of the two cables to shift, causing one of the cables to be overheated and burned.
Another situation worth mentioning is that when multi-core armored power cables are used in parallel in the AC grid, the A phase, B phase, and C phase of each cable must be taken out separately and connected to the A, B, and C of the switch respectively. C three-phase parallel connection, it is strictly forbidden to short-circuit all the cores of a cable and connect to one phase of the switch. Because the cable is equivalent to running in a live single-phase, single-phase alternating current will generate eddy currents in the steel strip and cause thermal burn accidents in the cable. In addition, the reduction of the current carrying capacity after parallel connection should be fully considered, and the current carrying capacity after parallel connection is not equal to the current carrying capacity of the actual conductor section.
Read recommendations:
36-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
3-8W Charger,3W Charger,8W Charger,4W Charger,5W Charger,6W Charger,7W Charger
100-300W Charger,100W Charger,200W Charger,300W Charger
18W, 20W, 30WPD charger, who is the best charging match for Apple 13?POWER SUPPLY
Popular recommended products
200-500W Switching Power Supply
2020-08-2924-65W Switching Power Supply
2020-08-2912V2ASwitching Power Supply
2020-08-28MKD-571202000 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-28EI-48 ADAPTER LINEAR ADAPTOR Switching Power Adapter INTERCHANGEABLE ADAPTOR Linear Adapter
2020-08-28EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-28EI-35 ADAPTER AC ADAPTER SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28ER42 High Frequency Transformer
2020-08-2712-36W POE POWER SUPPLY
2020-08-27Transformer,Power Transformer,Ring Power Transformer
2020-08-27Transformer，High Frequency Transformer，Frequency Transformer
2020-08-2712-24W Medical Switching Power Supply
2020-08-273-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
2020-08-2745W PD Charger,45W Charger,PD Charger
2020-08-2736-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
2020-08-2724W USB Charger,24W Charger,USB Charger
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-2730-500W LED Power Supply 30-500W Power Supply
2020-08-27Related Information
What are the unique advantages of high frequency switching power adapter
2022-04-20General Mechanism Analysis of Switching Power Adapter.ac power adapter wholesaler
2022-04-19Suppression method of low frequency ripple of switching power supply
2022-04-16Why is the power adapter making noise?
2022-04-15When the power adapter is in normal use, what is the normal temperature?
2022-04-1490% of people use the car charger incorrectly, are you using it right?CAR POWER SUPPLY sales
2022-04-13The difference between a power adapter and a voltage regulator
2022-04-12Select the power adapter to determine these three adaptation conditions.SWITCHING POWER Vendor
2022-04-11Why is the original power adapter better than the non-original one?TRANSFORMER Production
2022-04-09What are the industries where the power adapter can be applied?CAR CHARGER wholesale
2022-04-08What is the difference between high-end and low-end power adapters? How to check after playing,CAR P
2022-04-07How to design a good power adapter,CAR CHARGER wholesaler
2022-04-07Customized desktop power adapter
2022-04-06The quality of the switching power supply determines the safety of electricity use,CAR CHARGER whole
2022-04-02What are the advantages of wireless chargers?
2022-03-30PD charger is a must-have at home
2022-03-29What are the main materials of the power adapter shell?
2022-03-26What is a PD power adapter? It can make charging ubiquitous
2022-03-25Slow charging? Try a fast charger
2022-03-24Do you understand the cause of abnormal noise in the power adapter?
2022-03-23Reasons for abnormal noise of the power adapter
2022-03-22Talking about the common problems of the power adapter
2022-03-19General manufacturer power adapter reliability test items
2022-03-18More energy efficient and safe power adapter
2022-03-17Five ways to solve the power adapter overheating?
2022-03-16What are the common connection faults of cottage shared chargers on the market?
2022-03-15How to use the car charger and matters needing attention!
2022-03-14Do you know the difference between a power adapter and a charger,CAR CHARGER Processor
2022-03-12The power adapter has a very wide range of applications,Audio Transformer
2022-03-11What is the development trend of the power adapter industry,AC ADAPTER
2022-03-10Popular recommended products
24-36W Charger,36W Charger,24W Charger,30W Charger
2020-08-27QC3.0 24W USB Charger,24W USB Charger,24W USB Charger,USB Charger
2020-08-27MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-28MKS-120200EU-36 Switching Power Supply
2020-08-2918-25W Switching Power Supply
2020-08-28EI-28 AC ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter Linear Adapter
2020-08-2824V21A LED Power Supply 24V Power Supply 21A Power Supply
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-2724-65W Medical Switching Power Supply
2020-08-27Transformer,Power Transformer,Ring Power Transformer
2020-08-27Inductance & Coil
2020-08-2712VDC8A 96W power supply
2020-08-28EI Power Transformer Power Transformer
2020-08-2736-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
2020-08-2724V1.5A 36W Switching Power Supply
2020-08-2912-24W Medical Switching Power Supply
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-27MKD-571202000 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-2824W USB Charger,24W Charger,USB Charger
2020-08-2712W CAR CHARGER,12W USB CAR CHARGER,CAR CHARGER,12W CHARGER
2020-08-27MKS-1203000EX Switching Power Supply
2020-08-29MKS-1202000-36 Switching Power Supply
2020-08-29EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-2830W PD Charger,30W Charger,PD Charger
2020-08-27EI-35 ADAPTER AC ADAPTER SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-283-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
2020-08-2730-500W LED Power Supply 30-500W Power Supply
2020-08-2724-65W Switching Power Supply
2020-08-29