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  RN Type High Voltage Tube Ceramic Fuse
 
 
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S
RN
RN2
Indoor
Outdoor
A/B
W
Current-Limiting
RN2(PT)Type
High
F
BR1
 

 product presentation
 
RN1
 
APPLICATIONS
RN 1 type indoor H. V. Current-limiting fuse is used for protecting from overload and short circuit for power circuit. The so called
current-limiting is the function of fuse cuting off the short circuit current before it reaching the peak value.
◆STRUCTURE OF MELT TUBE
Melt tube is the main component of fuse made of fuse wire installed in porcelain tube, which is filled with quartz sand,and completed by
sealing the two ends.The melt tube with rated current 7.5A and below and rated voltage of 35KV,its fuse wire is winded around purpose
made porcelain core,see Fig.2 a;for rated current above 7.5A,its fuse wire hanging in the porcelain tube, see Fig.2 b.
◆APPLICATIONS
RN2 type indoor H.v.Current-limiting fuse is used for protecting from short circuit for voltge transformer,its breaking capacity has 1000,2000 and 4000MVA.Fusing current in 1 min is within 0.6-1.8A
 

ONE. Advantages: 

1. Full scope protection 

2. High breaking capability 

3. High voltage current limiting fuse 

4. Design as customer required 

5. Low power dissipation 

TWO. Specification: 

Material: Ceramic 

Color: White 

THREE. Technical parameters: 

Rated voltage(KV): 3 6 10 

Rated current: 75 100 150 200 300 400 A 

FOUR. Applications: 

RN1 type indoor H. V. Current-limiting fuse is used for protectiong from overload and short circuit for power circuit. THe so-called current-limiting is the function of fuse cutting off the short circuit current before it reaching the peak value. 

FIVE. Fusing characteristics: 

1. When the passing current for fuse is 1.3 times of its rated current, it does not melt in 1 hour. 

2. When the passing current for fuse is 2 times of its rated current, it melts in 1 hour. 

3. Fusing characteristic curve of fuse see the following Fig, for reference of selecting fuse. 

SIX. Structure of melt tube: 

Melt tube is the main component of fuse made of fuse wire installed in porcelain tube, which is filled with quartz sand, and completed by sealing the two ends. The melt tube with rated current 7.5A and below and traed voltage of 35KV, its fuse wire is winded aroud purpose made porcelain core; For tared current above 7.5A, its fuse wire hanging in the porcelain tube.

 
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