Car fuse is a current fuse when abnormality circuit current exceeds the rated current of the fuse circuit protection functions commonly used in automotive overcurrent protection circuit, overcurrent protection is also used for industrial equipment. Automobile circuit there are many electrical devices are connected wires of different colors, which most can not be ignored should be fuse. fuse is a habit of name, national standards, said fuses. fuse role is to protect the circuit (line) and electrical equipment, not due to short circuit, overload and fault thermal damage, even fire.
1. the basic structure of a fuse
Usually a melt fuse portion, the electrode portion, the support of these three components.
1. Melt section, which is the core of the fuse, fuse acts when the current is cut off, the same type, the same size fuses melt material to the same, to the same geometry, resistance value as much as possible small and to be consistent, the most important thing is to be consistent fusing characteristics.
The electrode section, usually two, which is an important component of the circuit coupled to the melt, it must have good electrical conductivity, should not have significant contact resistance mounting.
3. The bracket portion, generally a melt fuse thin soft, the role is to melt the stent and three fixing portions integrally become rigid easy to install, use, it must have good mechanical strength , insulation, heat resistance and flame resistance, not to use, is ruptured, deformed, short circuit and combustion phenomena.
2. The fuse effect
Function fuse is a protection circuit (line) and the main electrical equipment, in order to prevent a short circuit or overload faults and thermal damage, even fire, protection of electrical equipment supplement. Should choose the right size fuse mounting to the protective conductor connection. If a device similar to a car radio suddenly flows enough current to blow the fuse, when the radio probably has burned. Here, the role is to protect the fuse wire replacement of the wire is much more difficult than replacing the radio. So in a sense, the fuse is life insurance.
3. Fuse Category
1. Material
in the fuse conductor made of a metal similar to the solder which is lower than the melting point of ordinary wire itself. The size of the conductor through very accurate calibration, so that the rated current is reached, is capable of generating sufficient heat to fuse the conductor, breaking the circuit. after the blown fuse must be replaced, a circuit to work must be used the same number of ampere fuse blown fuse replacement can be divided into metal shell, plastic shell, the shell oxide film three.
2. by brand,
An all anti-burn car fuses, Katsuna car fuse, Yi-day car fuse, special forces car insurance, BDR car fuses, Pacific automobile fuses.
3 minutes by use of
Power fuses, fuse tool, electrical fuse, automotive fuse.
4. Press the volume fraction of
large, medium, small and micro.
5 points according to the shape
Flat tube fuse (divided into inner and outer solder bond fuse fuse), the tip of the tubular fuse, fuse guillotine, spiral fuse, blade fuse, fuse plates, wraps fuse, SMD fuses.
6. The fuse speed divided by
Laid TT expressed by the slow fuses, fuse slow represented by T, M represents a medium speed with a fuse, a fuse with fast F He said fAST fuse represented by FF.
7. Press the standard score
European regulations fuse, fuse US regulations, sundial fuse.
8. By type
current fuse (SMD fuses, miniature fuses, fuse inserts, the tubular fuse), temperature fuse), resettable resettable fuse ( plug-in, laminated, patch).
9. rated voltage points
high voltage fuses, low voltage safety fuses and fuse.
10 minutes by breaking capacity
High and Low breaking capacity fuse.
4. Check the fuse and replacement
cars in use, if any electrical equipment does not work, you may be burning fuse leading to the need for timely replacement. The easiest way to check the fuse is removed from the socket, and two hooking fuse conductors with continuity tester. However, if such testing is mounted in the fuse wire, circuit continuity may not be obtained through a fuse form.
In general, if blown by visual inspection to identify the fuse The car use, if any electrical equipment does not work, it may be burning fuse leading to the need for timely replacement. If you can not find the same amperage fuse, the use of lower amperage fuse, but must use the correct fuse to be replaced soon.
it is best to purchase a set of the original fuse, put the car for emergency use. If the new fuse and change immediately burned, the electrical system may be problematic. Have to go to the Great Wall Wizard car dealership as soon as possible store or service center for repair. never use higher amperage fuse, fuse or any other object in place, otherwise it will cause serious damage and may cause a fire.