Silica-glass-yarn braided Nickel-clad-copper-conductor Wire: NPC-MS500
Max. operating temp:500℃
Rated voltage:600V
NPC-MS500 is a super heat-resistant wire, the conductors of which are heat-resistant and corrosion-resistant as well as flexible nickel-clad-copper-conductor wire wrapped in glass-mica tape coated with silica-glass fiber. High-performance coating, which is light yellow and excels in insulating characteristics, is applied to the insulation of NPC-MS500. NPC-MS500 is manufactured according to the NINOMIYA Standards.
Features of nickel-clad-copper-conductor wire
- The conductor resistance of nickel-clad-copper-conductor wire is about a quarter (1/4) of that of nickel-conductor wire; therefore the former can be thinner in diameter and lighter than the latter while the allowable current value of the former is the same as that of the latter.
- Since nickel-clad-copper-conductor wire is more flexible than nickel-conductor wire, it can be easily processed and routed.
- The nickel plate is 20 to 30 times as thick as conventional nickel plate (1 to 5μm). Note that the area ratio between nickel and copper is about 28:72.
- Since the surface of nickel-clad-copper-conductor wire is nickel, it is more corrosion-resistant than copper wire.
- Its electric conductivity changes over time. However, about 60% of the electric conductivity is maintained even after the nickel-clad-copper-conductor wire is used at a temperature of 400℃ for three consecutive years.
Features of NPC-MS500 series products
The maximum operating temperature is 500℃, and the rated voltage is 600V!
NPC-MS500 series products are superior in insulating characteristics and heat resistance to TM430 series products.
Applications
NPC-MS500 series products are used for applications such as the lead wire in an electric heater, which must be highly resistant to heat as well as corrosion, and wire in high-temperature equipment.
Lineup
| Nominal cross-sectional area m㎡ |
Conductor | Taping thickness mm |
Braid thickness mm |
Standard overall diameter mm |
Conductor resistance (20℃, standard) Ω/km |
Insulation resistance (20℃, minimum) MΩ・km |
Test voltage (AC, 1 min.) V |
Max length m |
Estimated weight kg/km |
|
|---|---|---|---|---|---|---|---|---|---|---|
| Composition Pcs/mm |
Outside diameter mm |
|||||||||
| 0.75 | 14/0.26 | 1.1 | 0.85 | 0.4 | 3.6 | 30.5 | 10 | 2,000 | 100m | 23 |
| 1.25 | 24/0.26 | 1.5 | 0.85 | 0.4 | 4.0 | 17.8 | 10 | 2,000 | 100m | 30 |
| 2 | 37/0.26 | 1.8 | 0.85 | 0.4 | 4.3 | 11.5 | 10 | 2,000 | 100m | 39 |
| 3.5 | 66/0.26 | 2.6 | 0.85 | 0.4 | 5.1 | 6.46 | 10 | 2,000 | 100m | 60 |
| 5.5 | 35/0.45 | 3.1 | 1.0 | 0.45 | 6.0 | 4.07 | 10 | 2,000 | 100m | 85 |
| 8 | 50/0.45 | 3.7 | 1.2 | 0.45 | 7.0 | 2.85 | 10 | 2,000 | 50m | 115 |
| 14 | 88/0.45 | 5.5 | 1.2 | 0.8 | 9.5 | 1.62 | 10 | 2,000 | 50m | 195 |
| 22 | 7/20/0.45 | 7.0 | 1.2 | 0.8 | 11.0 | 1.04 | 10 | 2,000 | 50m | 285 |
* The products above are of hygroscopic nature, and offer different insulating characteristics depending on where they are wired. Please avoid using them in locations with high humidity and moisture.
* Although the above products are heat-resistant wires, they do not suppress heat generation or are heat proof.
Please do not hesitate to contact our Sales Department for any special specifications that are not listed above.
List of allowable current values
| Size | Ambient temperature | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 140℃ | 160℃ | 180℃ | 200℃ | 220℃ | 240℃ | 260℃ | 280℃ | 300℃ | 320℃ | 340℃ | 350℃ | 360℃ | |
| 0.75SQ | 39.5 | 38.9 | 38.1 | 37.4 | 36.6 | 35.6 | 34.7 | 33.6 | 32.4 | 31.2 | 29.8 | 29.0 | 28.2 |
| 1.25SQ | 55.0 | 54.0 | 53.1 | 52.0 | 50.9 | 49.7 | 48.3 | 46.9 | 45.2 | 43.5 | 41.6 | 40.5 | 39.4 |
| 2SQ | 79.7 | 78.4 | 77.0 | 75.5 | 73.9 | 72.1 | 70.2 | 68.1 | 65.8 | 63.3 | 60.4 | 58.9 | 57.3 |
| 3.5SQ | 116 | 114 | 112 | 110 | 107 | 105 | 102 | 83.9 | 96.2 | 92.6 | 88.5 | 86.3 | 53.9 |
| 5.5SQ | 154 | 151 | 149 | 146 | 143 | 139 | 136 | 132 | 127 | 122 | 117 | 114 | 111 |
| 8SQ | 194 | 191 | 188 | 184 | 180 | 176 | 172 | 167 | 161 | 155 | 148 | 145 | 141 |
| 14SQ | 273 | 269 | 265 | 260 | 254 | 249 | 242 | 235 | 227 | 219 | 209 | 204 | 198 |
| 22SQ | 383 | 377 | 371 | 364 | 357 | 349 | 340 | 330 | 319 | 307 | 294 | 286 | 278 |
| Size | Ambient temperature | ||||||||||||
| 370℃ | 380℃ | 390℃ | 400℃ | 410℃ | 420℃ | 430℃ | 440℃ | 450℃ | 460℃ | 470℃ | 480℃ | 490℃ | |
| 0.75SQ | 27.3 | 26.4 | 25.5 | 24.4 | 23.3 | 22.1 | 20.8 | 19.4 | 17.8 | 16.0 | 13.9 | 11.4 | 8.0 |
| 1.25SQ | 38.2 | 36.9 | 35.6 | 34.1 | 32.6 | 30.9 | 29.1 | 27.1 | 24.8 | 22.4 | 19.5 | 15.9 | 11.2 |
| 2SQ | 55.5 | 53.7 | 51.8 | 49.7 | 47.4 | 45.0 | 42.4 | 39.5 | 36.2 | 32.6 | 28.3 | 23.2 | 16.4 |
| 3.5SQ | 81.4 | 78.7 | 75.8 | 72.8 | 69.6 | 65.9 | 62.1 | 57.9 | 53.1 | 47.9 | 41.6 | 34.1 | 24.1 |
| 5.5SQ | 108 | 104 | 100 | 96.5 | 92.5 | 87.7 | 82.6 | 77.1 | 70.6 | 63.5 | 55.3 | 45.3 | 32.2 |
| 8SQ | 136 | 132 | 127 | 122 | 117 | 111 | 104 | 97.4 | 89.5 | 80.4 | 70.2 | 57.5 | 40.9 |
| 14SQ | 192 | 186 | 180 | 172 | 165 | 156 | 147 | 137 | 126 | 113 | 98.7 | 81.2 | 57.4 |
| 22SQ | 270 | 262 | 252 | 242 | 231 | 219 | 206 | 193 | 177 | 159 | 138 | 113 | 80.4 |
*The above allowable current values are the values calculated based on the assumption that the products are used in a normal open atmosphere. Please use NPC-MS500 series products with a safety current that ensures safe operation.
*The above allowable current values of NI-MS500 series products are the reference values calculated based on our demonstration experiments.
*NI-MS500 series products are manufactured according to the Standards of Ninomiya Electric Wire Co., Ltd.