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| THBBD-30/2J type constant wattage parallel connection electric heating cable |
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（一）1.the numbered and are explained in the corresponding sections
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The power generatrix wire is 2 parallel insulative copper wires. Heating threads are wound around the inner jacket insulation layer. Every certain distance the heating thread is welded to the generatrix, which makes the continuous parallel connection resistance. When the generatrix is powered, the parallel connection resistance begin to heat. This makes a continuous heating belt. |
| 3.product types and main technical characteristics |
main technical parameters of THBBD （JFB） - □ /2J type electric heat cable
type
(reinforced type) |
rated voltage
(v) |
rated power
(w/m） |
insulation resistance
（MΩ/km） |
electricity intensity
（v/min） |
insulation material |
highest temperature
(℃) |
highest maintenance temperature of media(℃) |
max use length of single power（m） |
THBBD-10~40/2J |
220 |
10 |
≥100 |
2200 |
F46 |
200 |
120 |
330 |
20 |
110 |
160 |
30 |
90 |
110 |
40 |
70 |
80 |
Product Standard:Q/DTHD001-2007
Explosion-proof Standard：ExeⅡT4
The Number Of Flame-proof Certification：CJEx08.058U、CJEx09.226U
| 4.product Characteristics and Applications |
The heat output per length unit out of the constant wattage heating cable is fixed and constant .The longer the heating cable, the stronger the power is output. The electric heating belt can be cut flexibly according to the actual needs. And it is flexible and can be laid closely on the pipe surface. The outer braid layer can execute the function of heat transmitting and radiating, to enhance the general intensity of the heating belt. It can also be earthed.
It would maintain temperature 120C and apply to all kinds of pipeline, instrument and valve gate. They are applied in class1 and class2 explosion-proof zones in factories.
▲ For accompanying heating of low solidifying point media pipeline to prevent media congelation when stopping to flow.
▲ For controlling together with a thermal controller the process temperature of the pipeline.
▲ For accompanying heating and temperature maintaining of normal pipelines and instrumentation cable conduits, and for anti freezing of tap water pipeline and valves.
▲ For oil wells and gas wells and other sites requiring anti freezing and temperature keeping. |
（二） THBBD-30/3J type constant wattage parallel connection electric heating cable. |
main technical parameters of THBBD-30/3J type electric heat cable |
type
(reinforced type) |
rated voltage
(v) |
rater power
（w/m） |
insulation resistance
（MΩ/km） |
electricity intensity
（v/min） |
insulation material |
highest temperature
(℃) |
highest maintenance temperature of media
(℃) |
max use length of single power
（m） |
THBBD-30～40/3J |
380 |
30 |
≥100 |
2750 |
F46 |
200 |
90 |
190 |
40 |
70 |
160 |
Product Standard：Q/DTHD001-2007
Explosion-proof Standard：ExeⅡT4
The Number Of Flame-proof Certification：CJEx08.058U、CJEx09.226U
THBBD-30/3 type and THBBD-30/2J type have a same basically structure, THBBD-30/3J type heating cable use 2 phase power supply with 380V and single supply power length is 190m |
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Wiring Diagram |
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| NO. |
Name |
| 1 |
power (with leak detection) |
| 2 |
temperature control switch |
| 3 |
heating wire of the cable |
| 4 |
length of heating sector of the heating cable |
| 5 |
earthing of the shielding |
| 6 |
heating thread |
| 7 |
heating section length |
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