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Drop Fuse, Drop-out Fuse

Fuse Structure: composed of base and arc suppression device.

Drop fuse is suitable for power system with voltage and frequency of 35kV and below 50Hz. It is used for overload and short circuit protection of transmission line and power transformer. Its mechanical life is more than 2000 times.

HRW3 drop fuse
HRW6 drop fuse
HRW7 drop fuse
HRW11 drop fuse
RW3 drop fuse
HRW12 drop fuse

 Introduction

Fuse refers to a kind of electrical appliance which breaks the circuit by fusing the melt with the heat generated by itself when the current exceeds the specified value. 

It is a kind of current protector which is made according to the principle that after the current exceeds the specified value for a period of time, the fuse melts the melt with the heat generated by itself, thus breaking the circuit. 

Widely used in high and low voltage distribution system, control system and electrical equipment. 

As the protector of short circuit and over-current, fuse is one of the most commonly used protective devices.

 Feature

Drop Fuse Application: 

Drop fuse is the most commonly used short-circuit protection switch for 10kV distribution line branch line and distribution transformer. It has the characteristics of economy, convenient operation and strong adaptability to outdoor environment. It is widely used in 10kV distribution line and distribution transformer primary side as protection and equipment switching operation.

It is installed on the branch line of 10kV distribution line, which can reduce the scope of power failure. Because it has an obvious disconnection point and has the function of isolation switch, it creates a safe working environment for the lines and equipment in the maintenance section, and increases the safety sense of maintenance personnel.

Installed on the distribution transformer, it can be used as the main protection of the distribution transformer, so it is widely used in 10kV distribution lines and distribution transformers.

 Technical Index

Type

Rated Voltage(KV)

Rated Current(A)

Breaking Current(A)

Impulse Voltage(KV)

Power frequency withstand voltage(KV)

HRW7
(Strengthening type)

12

100

6300

110

42

HRW7
(Strengthening type)

12

200

8000

110

42

RW3

 10

100

6300

 110

 42

RW3

 10

 200

 8000

 110

 42

HRW11

 35

100

 6300

110

42

HRW11

35

200

 8000

 110

 42

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