CLF (25.8kV High Voltage Current Limiting Fuses)
25.8kV High Voltage Current Limiting Fuses is economically effective and carries excellent break performance which is widely used along with other protective equipment to protect high-pressure circuits and high-voltage equipment (e.g. current transformers, condensers, etc.) from overcurrent or short-circuit current. This light weight product has a high-capacity breaking performance of 40㎄ and is optimal for protecting power receiving circuits and equipment.
■ Product Attributes
• This product is made in Korea using 100% local technology and equipment.
• First product in Korea developed using the KEPCO standard voltage(25.8㎸)
• First in Korea to develop a non-standard compact size (reduced the fuse length by 23% to 342㎜)
• Adopts polymer base insulator
■ Specifications
| Rated voltage | 25.8kv |
| Rated frequency | 50㎐ / 60㎐ |
| Rated current | 200A |
| Rated breaking current | 40㎄ |
| Power frequency withstand voltage (between phases and grounds/poles) |
60㎸/1min / 66㎸/1min |
| Impace withstand voltage (between phases and grounds/poles) |
125㎸ / 145㎸ (1.2X50㎲) |
| Striker type | Medium |
| Applied standards | IEC 60282-1(2005) |
■ Electrical Properties
| Types | Rated voltage |
Rated current (A) |
Minimum breaking current (A) |
Breaking current |
Resistance(mΩ) | Watt (W) | Weight(㎏) | Size(㎜) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100% | 50% | Length | Diameter(ØA) | ||||||||||||||||||
| PF25B5(k) | 25.8㎸ | 5 | 18 | 40㎄ | 1136 | 37(37) | 8(8) | 3.39(2.62) | 442 (342) | 67 | |||||||||||
| PF25B10(k) | 10 | 35 | 579 | 80(84) | 16(17) | 3.39(2.63) | |||||||||||||||
| PF25B16(k) | 16 | 70 | 284 | 112(124) | 21(21) | 3.39(2.63) | |||||||||||||||
| PF25B20(k) | 20 | 96 | 190 | 115(121) | 21(21) | 3.39(2.63) | |||||||||||||||
| PF25B25(k) | 25 | 125 | 147 | 160(196) | 26(28) | 3.39(2.63) | |||||||||||||||
| PF25B31.5(k) | 31.5 | 145 | 81.3 | 143(205) | 25(22) | 4.36(3.38) | 77 | ||||||||||||||
| PF25B40(k) | 40 | 200 | 58.4 | 158(170) | 26(36) | 4.36(3.38) | |||||||||||||||
| PF25B50(k) | 50 | 282 | 41.5 | 211(193) | 31(29) | 4.37(3.39) | |||||||||||||||
| PF25B63(k) | 63 | 380 | 31.5 | 246(230) | 37(35) | 4.37(3.39) | |||||||||||||||
■ Fuse exterior
