1、 Fuse is the simplest protective appliance, which is used to protect electrical equipment from overload and short-circuit current damage. According to the installation conditions and uses, different types of high-voltage fuses are selected, such as outdoor drop type and indoor type. For some high-voltage fuses of special equipment, special series should be selected. We often say fuses are fuses. At present, the main brands of fuses for electric vehicles are Bussmann Bussman fast fuse, Ferraz Roland fast fuse, Siemens Siemens fast fuse, Siba Xiba fuse, etc. Bussmann Bussmann fuse is widely used in high-voltage protection circuit of pure electric vehicles, hybrid electric vehicles and so on, which has the characteristics of safety, reliability, long life and high market share.

2、 Product parameters:

Rated current: 200A

Rated voltage: 10KV

Application: electric power

3、 Selection principle of high voltage fuse

In order to make the fuse play its due role and ensure the safe operation of vehicle electrical appliances, it is particularly important to select the appropriate type and specification. The selection of fuse involves the following factors: the current characteristics and voltage characteristics applied on the fuse, the ambient temperature of the fuse, the installation size limit, the application line, etc. When the applied voltage and installation size are fixed, the selection of fuse is mainly considered from three factors: current characteristics, ambient temperature and application line. Considering the application line, the whole vehicle line can be divided into high voltage large current protection zone and low voltage small current protection zone according to the current strength. Generally, an electric vehicle uses 4-5 high voltage fuses, mainly including motor controller, air conditioning circuit, DC / DC, battery heater and other high voltage and high current equipment. A large number of medium and low voltage fuses are used in an electric vehicle, mainly the central control box in the vehicle circuit, including lighting circuit, audio circuit, wiper circuit and other electrical equipment. The fuse can be selected according to the standard conditions of traditional fuel vehicles.

4、 Type of high voltage fuse

1. British Standard Fuse

British fuses are mainly used for equipment produced in Commonwealth countries. The shell of British standard fuse is made of ceramic material. The product has the characteristics of small volume and high cost performance. It is especially favored by UPS manufacturers below 240V.

2. American Standard Fuse

American fuse is widely used, covering most of the applications of power electronic products. American Standard Fuse shell is made of melamine mesh cloth and ceramic lamination process, which has strong impact resistance, small Joule integral value, low power loss, superior DC performance and other characteristics, and is widely used in substations, electric locomotives and other occasions.

3. European Standard Fuse

The shell of European standard square fuse is made of ceramic material. The product has the characteristics of low operating temperature, low power loss and small Joule integral value. It is suitable for compact structure, superior performance and high power applications, especially in manual maintenance switch (MSD).

4. French Standard Fuse

French standard fuse has the characteristics of strong cycle performance, small volume and unique structure, which is suitable for small ups, small AC driver and other low power applications with small space.