Kòm nou tout konnen, câbles chofaj elektrik yo divize an câbles chofaj elektrik pouvwa konstan ak pwòp tèt ou -limitasyon câbles chofaj elektrik tanperati, ak câbles chofaj elektrik pouvwa konstan yo plis divize an seri konstan pouvwa elektrik chofaj câbles ak paralèl pouvwa konstan elektrik. câbles chofaj. Moun yo souvan konfonn sa yo kalite câbles chofaj elektrik, epi li pa klè ki diferans ki genyen ant twa yo. Isit la, diferans ki genyen ant seri a ak koneksyon paralèl nan konstan pouvwa elektrik chofaj câbles yo ak pwòp tèt ou -limite tanperati câbles chofaj elektrik yo eksplike.
1. Diferans ki genyen ant seri konstan pouvwa elektrik chofaj kab ak paralèl konstan pouvwa elektrik chofaj kab
1. The constant power electric heating cable in series cannot be cut, and the constant power electric heating cable in parallel can be cut.
2. The heating elements of the two are different: the series electric heating cable adopts nickel-chromium alloy wire (the metal bus inside is heated), and the parallel electric heating cable adopts nickel-chromium winding wire for heating (that is, the winding wire wound on the outside, the metal busbar inside to conduct electricity).
3. The parallel constant power electric heating cable is suitable for large tanks and pipelines with high temperature requirements and explosion-proof areas, and the series electric heating cable is suitable for long-distance pipelines such as oil long-distance pipeline heating and large-scale tank insulation.
2. Diferans ant kab chofaj elektrik ki limite pwòp tèt ou-tanperati a ak kab chofaj elektrik pouvwa konstan:
1. Working principle
Oto--kab chofaj tanperati limite: Apre pouvwa a limen, kouran an se kouran pa youn nan fil yo, epi mennen nan lòt fil la nan nwayo PTC a pou fòme yon bouk, ak nwayo a ki gen valè rezistans chalè. leve.
Konstan pouvwa chofaj kab: Lè fil izole a tension, aktyèl la pase nan fil chofaj la, ak fil chofaj la jenere chalè ak transfere chalè.
2. Structural differences
Self-limiting temperature heating cable: PTC polymer conductive material is filled between the two wires.
Constant power heating cable: The copper-nickel heating wire is wound around the insulated wire and connected to the insulated wire at a distance.
3. Use environment
Self-limiting temperature tracing cable: used in places where the environment is not very complicated and the temperature requirements are not high.
Constant power heating cable: suitable for occasions where the user environment is more complicated and the temperature requirements are higher.
4. Use effect
Self-limiting temperature heating cable: It can adjust its own heating temperature according to the ambient temperature.
Constant power heating cable: the temperature remains unchanged, the calorific value and power are constant, and the stability performance is relatively strong.