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Ang PTC Alloy resistance wire ay may katamtamang resistivity at mataas na positibong temperatura coefficient of resistance.
Malawakan itong ginagamit sa iba't ibang pampainit. Maaari nitong awtomatikong kontrolin ang temperatura at isaayos ang kuryente sa pamamagitan ng pagpapanatili ng pare-parehong kuryente at paglilimita sa kuryente. Komposisyong kemikal:
| Pangalan | Kodigo | Pangunahing Komposisyon | | | | | |
| Fe | S | Ni | C | P | Pamantayan |
| Kawad na haluang metal na may resistensya sa temperatura | PTC | Bal. | ≤0.01 | 77~82 | ≤ 0.05 | ≤0.01 | Q/320421PTC4500-2008 |
Mga detalye at tolerasyon
| Diyametro | 0.05 | 0.10 | 0.15 | 0.16 | 0.17 | 0.18 | 0.19 | 0.20 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 |
| Pagpaparaya | ± 0.003 | ± 0.005 | ± 0.008 |
Temp.Coefficient ng resistensya (20ºC)
| Uri | PTC-4500 | PTC-4000 | PTC-3800 | PTC-3400 | PTC-3000 | PTC-2500 |
| 0~150ºC karaniwan, PPM | 4500 | 4000 | 3800 | 3400 | 3000 | 2500 |
Resistivity (20ºC)(μΩ.m)
| Uri | PTC-4500 | PTC-4000 | PTC-3800 | PTC-3400 | PTC-3000 | PTC-2500 |
| sa 20ºCresistance ±5%μΩ.m | 0.20 | 0.38 | 0.40 | 0.43 | 0.52 | 0.6 |
Ang talahanayan para sa resistensya
| Produkto | ±0.5%Ω/m | Diametro (mm) at cross-sectional area (mm²) |
| 0.05 | 0.10 | 0.15 | 0.16 | 0.17 | 0.18 | 0.19 | 0.20 | 0.21 | 0.22 | 0.23 | 0.24 | 0.25 |
| 0.00196 | 0.00785 | 0.00176 | 0.0201 | 0.0227 | 0.0255 | 0.0284 | 0.0314 | 0.0346 | 0.0380 | 0.0415 | 0.0452 | 0.0491 |
| PTC-4500 | 96.93 | 24.20 | 10.79 | 9.45 | 8.37 | 7.45 | 6.69 | 6.05 | 5.49 | 5.00 | 4.58 | 4.20 | 3.87 |
| PTC-4000 | 127.55 | 31.84 | 14.20 | 12.43 | 11.014 | 9.80 | 8.80 | 7.69 | 7.22 | 6.58 | 6.02 | 5.53 | 5.09 |
| PTC-3800 | 137.75 | 34.39 | 15.34 | 13.43 | 11.89 | 10.59 | 9.51 | 8.60 | 7.80 | 7.11 | 6.51 | 5.97 | 5.50 |
| PTC-3500 | 183.67 | 45.85 | 20.45 | 17.91 | 15.86 | 14.12 | 12.68 | 11.46 | 10.40 | 9.47 | 8.67 | 7.96 | 7.33 |
| PTC-3000 | 204.08 | 50.95 | 22.72 | 19.90 | 17.62 | 15.68 | 14.08 | 12.73 | 11.56 | 10.52 | 9.63 | 8.84 | 8.14 |
| PTC-2500 | 219.38 | 54.77 | 24.43 | 21.39 | 18.94 | 16.86 | 15.14 | 13.69 | 12.42 | 11.31 | 10.36 | 9.51 | 8.75 |
Ang bigat bawat spool
| detalye (mm) | ≤0.05 | >0.05~0.10 | >0.10~0.15 | >0.15~0.25 |
| Timbang bawat ispool | Karaniwang timbang | 20 | 30 | 100 | 300 |
| Mas mababang timbang | 10 | 20 | 50 | 100 |
Pagpahaba (%)
| Pamantayan | ≤0.05 | >0.05~0.10 | >0.10~0.15 | >0.15~0.25 |
| Paghaba ng alambreng haluang metal (malambot) | 10% | 12% | 16% | 20% |
Nakaraan: Ang PTC Thermistor Alloy Resistance NiFe28 NiFe30 Wire ay para sa Temperature Sensitive Resistance Susunod: Mga PTC thermistor alloy wire para sa Temperature Sensitive Resistance