HOMETECH☰
The core material of self regulating heating cable is PTC semi-conductive plastic. Its resistance value increases with the increase of temperature, but when the temperature rises to a certain value, the resistance suddenly increases sharply, thereby blocking the current and stopping heating; when the temperature is lower than the threshold temperature, the resistance of the PTC material automatically decreases to conduct the current, continue heating. This keeps the system within a stable temperature range.
The self regulating heating cable can be divided into three series: low temperature, medium temperature and high temperature according to the temperature characteristics.
| Product | Low temperature | Medium temperature | High temperature |
| Copper conductor | 7 × 0 .43 ; 7 × 0. 5 0 | 7 × 0. 5 0; 19 × 0.32 | 19×0.39; 19×0.41 |
| Conductive plastic layer | Normal PTC; Flame retardant PTC | Fluorinated PTC | |
| Insulating layer | Modified polyolefin; Flame retardant polyolefin | Modified flame retardant polyolefin; Flame-retardant polyolefin; Perfluorinated material | Perfluorinated material |
| Shielding layer | Aluminum-magnesium alloy wire (covering density 80%) Tinned copper wire (covering density 80%) | Aluminum magnesium alloy wire (covering density 80%); Tinned soft round copper wire (covering density 80%) | |
| Sheath layer | Modified flame retardant polyolefin; Flame-retardant polyolefin; Perfluorinated material | Perfluorinated material | |
| Flame retardant type | selectable | ||
| Voltage level | 12V 24V 36V 110V 220V 380V | 110V 220V 380V | |
| Structural pattern | Basic type (J ) 、 Shielded explosion-proof type (P ) Explosion-proof type (PJ ) 、 Explosion-proof and anti-corrosion type (PF) | ||
| Nominal power | 10W/m 15W/m 20W/m 25W/m | 30W/m 35W/m 45W/m 50W/m 60W/m | 35W/m 45W/m 55W/m 65W/m 75W/m |
| Standard color | black | brown | red |
| Temperature range | Max. operating temperature 65 ~ 5°C; Max. exposure temperature 85 °C | Max. working temperature is 105 ° 5 ° C; Max. exposure temperature 135°C | Max. working temperature is 130 5 °; Mex. exposure temperature is 150 ° C; |
| Construction temperature | Mini. -40 ° C | ||
| Thermal stability | After circulating back and forth 300 times from 10°C to 99°C, the heat value of the heat tracing cable is maintained at more than 90% | After circulating back and forth 300 times from 10°C to 105°C, the heat value of the heat tracing cable is maintained at more than 90% | After circulating back and forth 300 times from 10°C to 130°C, the heat value of the heat tracing cable is maintained at more than 90% |
| Bending radius | 25.4mm at -20 °C 35.00mm at -30 °C | 30.4mm at - 20°C 40.6mm at - 30°C | 38.5mm at-20°C 49.0mm at-30°C |
| Insulation resistance | Heat tracing cable length 100m, constant temperature water 75°C; Test the minimum insulation resistance of 20MΩ, shielded or explosion-proof protection type, at room temperature 20°C with 2,500VDC between the shielding layer and the conductor core shake test for 1 minute, the minimum insulation resistance of 20MΩ. | ||
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