Precautions for using fuses and fuses.charger fuse box diagram_Industry Trends_News & Events_XC Electronics(Shenzhen)Corp.,LTD

中文

Online Message

10 2023-07

Share:

　　

　　Precautions for using fuses:

　　1. The protective characteristics of the fuse should be adapted to the overload characteristics of the protected object. Considering the possible short-circuit current, a fuse with corresponding breaking capacity should be selected;

　　2. The rated voltage of the fuse should adapt to the line voltage level, and the rated current of the fuse should be greater than or equal to the rated current of the melt;

　　3. The rated current of each level of fuse melt in the circuit should be matched accordingly, and the rated current of the previous level of melt must be greater than the rated current of the next level of melt;

　　4. The melt of the fuse should be matched according to the requirements, and it is not allowed to arbitrarily increase the melt or use other conductors to replace the melt.

　　Inspection of fuses:

　　1. Check whether the rated values of fuses and melts match the protected equipment;

　　2. Check the appearance of the fuse for damage or deformation, and check the porcelain insulation for flashing discharge marks;

　　3. Check whether each contact point of the fuse is intact, tightly connected, and there is no overheating phenomenon;

　　4. Whether the fuse signal indicator is normal.

Read recommendations:

resettable fuse working

coffee maker thermostat parts

What are the types of Thermal cutoff.thermal protector recessed light

resettable surface mount fuse.Some precautions in the use of fuse tubes

PREVIOUS:Use and maintenance of fuses.solar panel fuse diagram

Return

Next：The difference between fuse and circuit breaker.battery fuse blown symptoms

Related News

August 12,2023

How to prevent current fuse holder failure?mini blade fuse kit

　　　　1. Carefully select the correct current fuse　　The application, operating parameters, and environment of fuses can all affect their lifespan, so choosing the correct fuse is very important.　　2. Ensure the rationality of circuit design　　Faults in circuit design can also lead to fuse failure, which can be catastrophic. Only by ensuring that the equipment operates within a larger rated range can faults be avoided.　　3. Reasonable use of fuses　　Correct use can avoid faults caused by errors, and it is also important to control the ambient temperature of the fuse used, which helps to reduce the possibility of current fuse holder failure. If you are unfamiliar with the use of fuses, you can directly consult the fuse manufacturer.

October 11,2023

test auto fuse with multimeter.The application of self recovery fuse in rechargeable battery pack

　　　　1. The application of self recovery fuse in rechargeable battery pack　　1) Problem and Analysis: NICD, NiMH, and Li-ION are commonly used in special protection circuits for mobile phones and computers. The reasons for these battery pack failures are usually: unexpected short circuit between the positive and negative terminals; The charger cannot stop charging a fully charged battery; The polarity of the wrong charger or battery is reversed. Installing the PTC patch series in series in various units of the battery pack can provide overcurrent and over temperature protection for the circuit.　　2) Protection requirements: In the event of a malfunction, the voltage of the mobile phone can reach 16V, and the voltage of the computer can reach 24V; Its current can reach 100 amperes. In overcharging conditions, the battery pack needs to be protected against overheating. NiCD batteries cannot exceed 120C, and NiMH and Li Ion batteries cannot exceed 90C.　　The ultra small package (0402 specific

October 18,2023

air conditioner fuse box outside.Self recovery fuse

　　　　When an overload occurs, a disposable fuse will blow at once. Although it can provide overcurrent protection, it needs to be replaced. The core part of a conventional fuse is a section of wire, which is heated to the melting point when the current is too high. After the wire melts, the current in the circuit drops to zero. So in some circuits that require complete power outage, or products with higher risk factors such as machinery, it is more suitable to use disposable fuses, which has a higher safety factor when used.　　Both traditional disposable fuses and self restoring fuses can achieve overcurrent circuit protection. Both achieve protection by reacting to the heating phenomenon generated by excessive current in the circuit. Fuses break the current by blowing, while self restoring fuses rely on changing from a low resistance state to a high resistance state to limit the magnitude of the current.

September 13,2023

Self recovery fuse for overheat protection in circuits

　　　　Self restoring fuses can respond to temperature increases caused by external heat and internal current, and establish thermal connections with high-voltage equipment to provide overheating protection. Establishing this thermal connection can be achieved by arranging these devices in contact with or near high-voltage equipment.　　The contact method enables the self recovery fuse to easily form physical contact with the device, thereby improving the protection effect. Transformers are a good example of this type of equipment. Self restoring fuses can be tied to external coils or enclosures to establish thermal connections. A self restoring fuse can be integrated into the circuit during design, enabling it to send a warning to the controller in the event of transformer overheating, and the system will immediately stop running.　　The close proximity method is suitable for the protection of power semiconductor components, and the best effect is achieved when a small surface mounted self r

July 10,2023

Use and maintenance of fuses and fuses.resettable fuse datasheet

　　　　1. When the melt melts, it is necessary to carefully analyze the reasons for the melting, which may include:　　(1) Normal fusing due to short circuit fault or overload operation;　　(2) If the melt is used for too long, it may break due to oxidation or high temperature during operation, resulting in changes in the characteristics of the melt;　　(3) There is mechanical damage during the installation of the melt, which reduces its cross-sectional area and causes accidental disconnection during operation.　　2. When replacing the melt, it is required to:　　(1) Before installing a new melt, it is necessary to identify the cause of melt melting. If the cause of melting is not determined, do not replace the melt for trial delivery;　　(2) When replacing a new melt, check whether the rated value of the melt matches the protected equipment;　　(3) When replacing a new melt, it is necessary to check the internal burn condition of the fuse tube. If there are severe burns, the fuse tube should be replac