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, 45φ76442Selection of fuse General selection principle for primary full range fuse of transformer Rated Voltage (kV)Rated Capacity of Transformer (kVA)125160200～2503154005006308001000Rated Current of Full Range High-voltage Fuse (A)121016202531.540506380246.31016202531.540

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

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

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

XRNT

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High-voltage current limiting fuse for full range protection

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