Maximum operation temperatures for Heating Cables
Cable Sheath Temperature °C - Heating Cable 400 Volt
Follow Ratings A, B and C below to obtain sheath temperature guidelines from the graph, for ordinary area applications.
Watts / Metre
| Cable reference |
Rating Factor |
Rating A
By design, identify cable reference to be used and calculate watts/metre rating of cable/element e.g. 0,40CN2A40; 80 W/m.
Rating B
Refer to rating factor table and multiply watts/metre rating of cable/element by rating factor to obtain adjusted watts/metre value. (80 W/m x 0.800 = 64.00 W/m)
Rating C
Using adjusted value, enter graph on watts/metre axis and obtain cable sheath temperature for application maintain temperature. Cable sheath temperature = 350°C for 100°C maintain – see graph.
|
| 1,6CN2A32 | 1.000 |
| 1,0CN2A34 | 0.941 |
| 0,63CN2A37 | 0.865 |
| 0,40CN2A40 | 0.800 |
| 0,25CN2A44 | 0.727 |
| 0,16CN2A49 | 0.653 |
| 0,063C2A32 | 1.000 |
| 0,040C2A34 | 0.941 |
| 0,025C2A37 | 0.865 |
| 0,017C2A46 | 0.696 |
| 0,011C2A49 | 0.653 |
| 0,007C2A49 | 0.653 |
| 0,007C2A53 | 0.604 |
| 0,004C2A59 | 0.542 |
Cable Sheath Temperature °C - Heating Cable 800 Volt
Follow Ratings A, B and C below to obtain sheath temperature guidelines from the graph, for ordinary area applications.
Watts / Metre
| Cable reference |
Rating Factor |
Rating A
By design, identify cable reference to be used and calculate watts/metre rating of cable/element e.g. 2,5V2A36; 100 W/m.
Rating B
Refer to rating factor table and multiply watts/metre rating of cable/element by rating factor to obtain adjusted watts/metre value. (100 W/m x 0.889 = 88.9 W/m)
Rating C
Using adjusted value, enter graph on watts/metre axis and obtain cable sheath temperature for application maintain temperature. Cable sheath temperature = 500°C for 300°C maintain – see graph.
|
| 10V2A32 | 1.000 |
| 6,3V2A32 | 1.000 |
| 4,0V2A32 | 1.000 |
| 2,5V2A36 | 0.889 |
| 1,6V2A38 | 0.842 |
| 1,0V2A41 | 0.780 |
| 0,63V2A45 | 0.711 |
| 0,40V2A50 | 0.640 |
| 0,25V2A56 | 0.571 |
| 0,16V2A65 | 0.492 |
