1 Introduction

35kv fuse is a high-voltage electrical equipment used in power systems. It is mainly used to protect the safe and stable operation of power systems. This article will introduce in detail the technical parameters of 35kv fuses, including rated voltage, rated current, rated short-circuit breaking current, rated short-circuit closing current, rated peak withstand current, etc.

2.Technical parameters

2.1 Rated voltage

Rated voltage refers to the voltage range within which the fuse can operate normally. A 35kv fuse is usually rated at 35 kilovolts (kV), which means it can operate normally at 35 kV.

2.2 Rated current

The rated current refers to the amount of current that the fuse can normally carry. The rated current of 35kv fuses usually ranges from thousands of amperes (A) to tens of thousands of amperes (kA), and the specific value is determined according to actual needs.

2.3 Rated short-circuit breaking current

The rated short-circuit breaking current refers to the amount of short-circuit current that the fuse can safely and reliably cut off. The rated short-circuit breaking current of 35kv fuses usually ranges from several thousand amperes (A) to tens of thousands amperes (kA).

2.4 Rated short circuit making current

The rated short-circuit making current refers to the short-circuit current that the fuse can safely and reliably withstand. The rated short-circuit making current of the 35kv fuse is usually equal to or slightly larger than the rated short-circuit breaking current.

2.5 rated peak withstand current

The rated peak withstand current refers to the maximum current peak that the fuse can withstand in a short period of time. The rated peak withstand current of a 35kv fuse is usually between tens of kiloamps (kA) to hundreds of kiloamps (kA).

2.6 Rated short-circuit disconnection times

The rated number of short-circuit disconnections refers to the number of times the fuse can safely and reliably disconnect short circuits within its design life. The rated short circuit opening times of 35kv fuses usually range from a few thousand to tens of thousands of times.

2.7 Rated operating sequence

The rated operating sequence refers to the operating sequence of the fuse under normal working conditions. The rated operating sequence of 35kv fuses is usually "energy storage-closing-opening", that is, energy is stored first, then the circuit is closed, and finally the circuit is opened.

3.Application fields

35kv fuses are mainly used in high-voltage distribution equipment and substations in power systems to protect the safe operation of the power system. It can quickly cut off the circuit when a fault or short circuit occurs in the power system to prevent fault expansion and damage to power equipment.

4 Conclusion

The 35kV fuse is an important device used in the power system and has the function of protecting the safety and stable operation of the power system. Its technical parameters include rated voltage, rated current, rated short-circuit breaking current, rated short-circuit closing current, rated peak withstand current, etc. These parameters need to be selected and configured according to actual needs to ensure that the fuse can perform short-circuit opening operations safely and reliably during operation. 35kv fuses are mainly used in high-voltage distribution equipment and substations in power systems and play an important role. By understanding and mastering the technical parameters of 35kv fuses, we can better understand and apply this device and improve the operating efficiency and safety of the power system.