Circuit safety and rated voltage of current fuse holder
During the use of the current fuse holder, when a current flows through the conductor, there will be a certain resistance between the conductors, so the conductor will heat up, and the heat generated by the current fuse holder must meet Q = 0.24I2RT. In this formula, T is the time that the current flows through the conductor, R is the resistance of the conductor, 0.24 is a constant, and Q is the heat generated.
During the process of energizing the current fuse holder, the fuse of the current fuse holder will cause the temperature of the fuse to rise due to the heat of the current, and the current and the heat generated by the fuse in the normal operating current or the load overload current. The heat generated by the casing and the surrounding radiation method can gradually reach equilibrium.
When the heat dissipation speed of the current fuse holder cannot keep up with the heat generation speed, thermal melting will gradually accumulate, causing the temperature of the melt to rise, and it will liquefy or evaporate the temperature to and exceed the melting point of the melting material. Then disconnect the current to provide safe maintenance for the circuit and the human body.
When a current fuse holder is used, the electrical function of the current fuse holder is connected in series to the electronic circuit. Generally, resistance is small. When the circuit is working normally, it is equivalent to only one wire, which can remain stable for a long time. When the current oscillates due to power supply or external interference, the conductive circuit should also bear a certain overload range. In the current fuse holder, when a large overload current occurs in the circuit, the secondary fuse will work and maintain the current to ensure the safety of the circuit.
The current fuse holder is very inconspicuous during daily use, but a vehicle without a fuse will turn into a pile of soulless old iron, mainly because of its starters such as lamps, automobile electrical appliances, air conditioners, and horns are protected by fuses, otherwise High-line CLP is likely to use electrical burns.
The current fuse holder has two important parameters, one is rated current and the other is rated voltage. When using, you must select the fuse of the corresponding specification according to the current and voltage of the fuse. Automotive fuses are divided into high current fuses and low and medium current fuses. Low and medium current fuses are more common in general vehicles. The low and medium current fuses are divided into plug-in fuses, fork fuses, spiral fuses, and tube fuses. Among them, the common touches are medium-sized and small fast-acting plug fuses.
Automotive fuse holders are more common. Generally, low and medium current fuses for vehicles are divided into plug-in fuses, fork fuses, spiral fuses, and tube fuses. Among them, the common touches are medium-sized and small fast-acting plug fuses.
The corresponding electronics in a car fuse holder is very simple. Typically, the example diagrams inside the fuse box represent the electronics responsible for each fuse. In use, the corresponding position can only be found by matching the chart to the fuse.