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Current limiting backup fuse

GRL indoor high voltage limit-current fuse RN1 / RN3 Type fusing performance


Mode:RN1 / RN3

Voltage:40Kv

Current:300A

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Keyword:high voltage limit-current fuse

RN1 / RN3 Type indoor high voltage limit-current fuse

□ The product is used in overload or short-circuit protection for elctric transformer . The current limiting means that the fuse will cut off the circuit before the short-circuit current reaches the peak value.

Fusing characteristics

Current which passes the fuse when being 1.3 times of its specified electric current , Do not fusing for an hour ; When the current through the fuse is 2 times of its specined electric current , fusing in an hour ; Refer to its fusing feature curve in chart 1 when select the fuse.

RN1/RN3 type “ampere-second” characteristic curve

high voltage limit-current fuse

Technique data

3 6 10 35
Rated current (A) 20 100 200 300 400 20 75 100 200 300 20 50 75 100 200 7.5 10 20 30 40
Max breaking curent KV effective vakue 40 20 12 3.5
The mininum breaking current Expresswith specified electric current multipe  not  stip- ulate 1.3  not  stip- ulate 1.3  not  stip- ulate 1.3  not  stip- ulate 1.3
Maximum three-phase breaking  capacity (MVA) 200
Weight 8 8.9 10.8 15.7 15.7 8.5 9.6 13.6 13.6 17 10 11.5 14.5 21 21 10 20 27 27 27

high voltage limit-current fuse 2

Structure of fuse link

□The fuse pipe is the main part of fuse , it is made by installing the fuse wire in the porcelain pipe , filling the quartz sand in the porcelain pipe and sealing to-ends of pipe.

For the fuse pipe with rated current below 7.5A and 35V rated voltage , its fuse wire is rolled on the special porcelain core , referening to chart 2.a for the fuse pipe with rated current above 7.5A , its fuse wire is hang in the porcelain pipe , referening to the chart .

Installation Dimensios

long hole


Product type

Product code number

Diagram number

Rated voltage(KV)

Fuse current A
Major dimensions
A a L H1 H b
RN1-6/2 RN3 chat3 6 2 310 500 550 125 235 108
RN1-6/3 RN3 3
RN1-6/5 RN3 5
RN1-6/7.5 RN3 7.5
RN1-6/10 RN3 10
RN1-6/15 RN3 15
RN1-6/20 RN3 20
RN1-10/2 RN3 10 2 410 600 650
RN1-10/3 RN3 3
RN1-10/5 RN3 5
RN1-10/.7.5 RN3 7.5
RN1-10/10 RN3 10
RN1-10/15 RN3 15
RN1-10/20 RN3 20
RN1-10/25 RN3 25
RN1-10/30 RN3 30

 

chat3

chat6


Product type

Product code number

Diagram number

Rated voltage(KV)

Fuse current A
Major dimensions
A a L H b
RN1-3/150 RN3 chat6 3 150 270 400 450 350 108
RN1-3/200 RN3 200
RN1-6/100 RN3 6 100 360 500 550
RN1-6/150 RN3 150
RN1-6/200 RN3 200
RN1-10/75 RN3 10 75 460 600 650
RN1-10/100 RN3 100

chat7


Product type

Product code number

Diagram number

Rated voltage(KV)

Fuse current A
Major dimensions
A a L b
RN1-10/80 RN3 chat7 10 80 460 600 650 108
RN1-10/100 RN3 10 100
RN1-10/150 RN3 10 150
RN1-10/200 RN3 10 200

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