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XI'AN XIANGYUAN ZHEN-LI ELECTRIC CO.LTD.
 
 
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High-voltage current limiting fuse for full range protection

Product description： This product applies to indoor AC 50~60Hz system with the rated voltage of 12kV ~ 24kV. It is able to reliably break any fault current from the fusion current to the rated breaking current. The product not only has the higher breaking capacity of the current limiting fuse, but also has the better small current protection characteristics of non-limiting current fuse, achieving the good protection characteristic of full range breakage.ModelDomestic model: XRNT3A-□/□-50kA        Equivalent model:                 Basic parameters:        Product ModelEquivalent Model Rated  Voltage (kV)Rated Current of Fuse Link (A) Standard SizeRated  Breaking Current (kA)φALXRNT3A-12FFLDJ1210, 16, 20, 25, 31.5, 40, 50, 63φ7629250FXLDJ80, 100φ88292XRNT3A-24FDMDJ246.3, 10, 16, 20, 25φ5144231.5FFMDJ31.5, 40, 45φ76442
Model: XRNT
Type: High Voltage Current-Limited Fuse
Applicable: High Voltage
Colour：
Origin:
 XiangYuan ZhenLi
  • Parameter
  • Specification
  • Service

This product applies to indoor AC 50~60Hz system with the rated voltage of 12kV ~ 24kV. It is able to reliably break any fault current from the fusion current to the rated breaking current. The product not only has the higher breaking capacity of the current limiting fuse, but also has the better small current protection characteristics of non-limiting current fuse, achieving the good protection characteristic of full range breakage.

Model

Domestic model: XRNT3A-□/□-50kA

       Equivalent model:

         High-voltage current limiting fuse for full range protection

       

Basic parameters:      

  

Product Model

Equivalent Model

Rated  Voltage 

(kV)

Rated Current of Fuse Link (A)

 Standard Size

Rated  Breaking Current

(kA)

φA

L

XRNT3A-12

FFLDJ

12

10, 16, 20, 25, 31.5, 40, 50, 63

φ76

292

50

FXLDJ

80, 100

φ88

292

XRNT3A-24

FDMDJ

24

6.3, 10, 16, 20, 25

φ51

442

31.5

FFMDJ

31.5, 40, 45

φ76

442

 

Outline dimensions

High-voltage current limiting fuse for full range protection

Fig. 1 Outline dimensions of XRNT3A full range fuse

 

Main technical data

High-voltage current limiting fuse for full range protection

Fig. 2 FFL, FXL 12kV time - current characteristic curve

High-voltage current limiting fuse for full range protection

Fig. 3 FDM, FFM 24 time - current characteristic curve

 

 

High-voltage current limiting fuse for full range protection 

Fig. 4 F fuse current limiting characteristic curve

 

 

 

Selection of fuse

 

General selection principle for primary full range fuse of transformer

 

Rated Voltage (kV)

Rated Capacity of Transformer (kVA)

125

160

200～250

315

400

500

630

800

1000

Rated Current of Full Range High-voltage Fuse (A)

12

10

16

20

25

31.5

40

50

63

80

24

6.3

10

16

20

25

31.5

40

XRNT
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