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:
MKS-1202000-36 Switching Power Supply
MKS-1401700H Switching Power Supply
ER42 High Frequency Transformer
How to recognize the power adapter? The three easiest detection methods!
BYJ low-smoke halogen-free wire, do you want to put it together
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 conditions of use and maintenance methods for switching power supplies?
2022-05-21Some Frequently Asked Questions about Power Adapters
2022-05-20How to deal with the electromagnetic interference of switching power supply which is difficult in EM
2022-05-19Six situations and solutions that cause the whistling of switching power supplies.power supply price
2022-05-18Lightning Surge Test Method for Switching Power Adapters.adapter factory
2022-05-17Two common power adapter output overload protection methods.ADAPTOR price
2022-05-16Common fault maintenance skills of switching power supply
2022-05-14How should we choose the charger?
2022-05-13Power adapter expertise.CE ADAPTOR
2022-05-12How to solve the high temperature rise of switching power supply transformer?
2022-05-11The role of varistor in switching power supply
2022-05-10Structural characteristics and working principle of varistor
2022-05-09The role of varistor in switching power supply
2022-05-09What are the main components of switching power supply
2022-05-07Two ways for MOS devices to dissipate in high-power power supplies,CE ADAPTOR Processing
2022-05-06Several common insulation protection technologies for power adapters
2022-05-05What are the unique advantages of high frequency switching power adapter
2022-04-27What are the main components of switching power supply.China cnc plastic cutting
2022-04-26Troubleshooting method of switching power supply,CE ADAPTOR wholesale
2022-04-25How to use the power adapter correctly
2022-04-23What is the comparison between a charger and an adapter?
2022-04-23The optimal solution of drone power management solution!
2022-04-22Several common insulation protection technologies for power adapters
2022-04-21What 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
2022-04-12Popular recommended products
EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28EI-48 ADAPTER LINEAR ADAPTOR Switching Power Adapter INTERCHANGEABLE ADAPTOR Linear Adapter
2020-08-2836-65W Switching Power Supply
2020-08-29MKS-1201250HEU Switching Power Supply
2020-08-2972-200W Switching Power Supply
2020-08-293-8W Charger,3W Charger,8W Charger,4W Charger,5W Charger,6W Charger,7W Charger
2020-08-2724-36W Charger,36W Charger,24W Charger,30W Charger
2020-08-2730W PD Charger,30W Charger,PD Charger
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-27MKS-120200EU-36 Switching Power Supply
2020-08-29Transformer,Power Transformer,Ring Power Transformer
2020-08-27200-500W Switching Power Supply
2020-08-29Transformer,High Frequency Transformer,Frequency Transformer
2020-08-27EI-28 AC ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter Linear Adapter
2020-08-2830-500W LED Power Supply 30-500W Power Supply
2020-08-27MKS-1401700H Switching Power Supply
2020-08-29EI-35 ADAPTER AC ADAPTER SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-2812W POWER SUPPLY,12W CAR POWER SUPPLY,POWER SUPPLY,CAR POWER SUPPLY
2020-08-2712W 2USB Charger,2USB Charger,12W Charger,USB Charger
2020-08-2712V2ASwitching Power Supply
2020-08-28MK-C1806028 MKA ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-2812VDC8A 96W power supply
2020-08-28MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-283-15W Switching Power Supply
2020-08-2812-24W Medical Switching Power Supply
2020-08-2724V1.5A 36W Switching Power Supply
2020-08-29100-300W Charger,100W Charger,200W Charger,300W Charger
2020-08-2724V21A LED Power Supply 24V Power Supply 21A Power Supply
2020-08-27Inductance & Coil
2020-08-2745W PD Charger,45W Charger,PD Charger
2020-08-27