DZ27F4

DZ27F4 Application Field and Working Principle

I. Introduction

DZ27F4 is a fast-acting fuse, usually applied as the protection of low-voltage electrical equipment, power supplies, and electronic components from short circuits or overloads. This type of product has the feature of small size, compact and high-performance. It has become widely used in many fields, such as industry, electrified railway, shipbuilding, etc.

II. Application Field

DZ27F4 is applied as the protection system of electricity circuits, providing the following functions: protection from over-voltage, over-current, over-temperature, against electric shock and other abnormal conditions.

The major application field of DZ27F4 includes:

• Industry equipments: such as control systems, industrial robots, etc;
• Computer systems: such as servers, displays, keyboards, etc;
• Mobile intercommunication systems: such as phones, internet devices, etc;
• Electrified transit systems: such as light rails, metro, etc;
• Automatic control systems: such as home appliances, motorcontrols, intelligent homes, etc.

III. Working Principle

Basically, DZ27F4 is a kind of electronic gas-filled tube fusemounting a set of integrated circuit chips for protection purpose. The regular operation of the fuse utilizes the following three core mechanisms:

• Voltage-based protection: the voltage of the input current is monitored in real-time by two sets of voltage-detection circuit chips. Once the applied voltage exceeds the set threshold, the detected circuit protection chip will immediately cut off the power supply for protective purpose.
• Current-based protection: there are two sets of current-detection chips inside the fuse. Once the applied current exceeds the set threshold or ranges, the current-detection chip will cut off the power supply for protective purpose.
• Temperature-based protection: the fuse is equipped with two sets of temperature-detection chips to monitor the heat concerning the applied current. If the monitored temperature exceeds the set threshold or ranges, the temperature-detection chip will then cut off the power supply for protective purpose.

IV. Conclusion

DZ27F4 is a fast-acting fuse commonly applied in industry, electrified railway, shipbuilding, computer systems, mobile intercommunication systems, automatic control systems, and other related fields as protection device. Its working principle is based on voltage-based, current-based, and temperature-based protection mechanisms, with a set of integrated circuit chips for real-time monitoring.