- Model NO.: XRNT3A-/-50kA
- Type: Current Fuse
- Shape: Insert
- Fusing Device: Link Break
- Trademark: zhenli
- Origin: Xi′an
- Breaking Capacity: High
- Usage: High Voltage
- Fusing Speed: FF
- Standard: UL
- Transport Package: Carbon
- HS Code: 8535100000
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:
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Basic parameters: Â Â Â Â Â
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| 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
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Fig. 1 Outline dimensions of XRNT3A full range fuse
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Main technical data
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Fig. 2 FFL, FXL 12kV time - current characteristic curve
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Fig. 3 FDM, FFM 24 time - current characteristic curve
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Fig. 4 F fuse current limiting characteristic curve
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Selection of fuse
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General selection principle for primary full range fuse of transformer
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| 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 | Â | Â |
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