Mar is eol dúinn go léir, roinntear cáblaí téimh leictreacha i gcáblaí téimh leictreacha cumhachta tairiseach agus féin-cáblaí téimh leictreacha a theorannú teochta, agus déantar cáblaí téimh leictreacha cumhachta seasmhach a roinnt tuilleadh i gcáblaí téimh leictreacha cumhachta seasta sraith agus cumhacht tairiseach comhthreomhar leictreach. cáblaí téimh. Is minic a mhearbhallann daoine na cineálacha cáblaí téimh leictreacha seo, agus níl sé soiléir cad é an difríocht idir na trí cinn. Anseo, mínítear an difríocht idir sraith agus nasc comhthreomhar na gcáblaí teasa leictreacha tairiseacha cumhachta agus na cáblaí teasa leictreacha féin-teochta teorannaithe.
1. An difríocht idir an cábla téimh leictreach tairiseach cumhachta sraith agus an cábla téimh leictreach cumhachta tairiseach comhthreomhar
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. An difríocht idir an cábla téimh leictreach teochta teorannaithe féin agus an cábla téimh leictreach cumhachta seasta:
1. Working principle
Féin-cábla teasa a theorannú teochta: Tar éis an chumhacht a chur ar siúl, déantar an sruth a fhuinneamh trí cheann de na sreanga, agus é a thabhairt go dtí an sreang eile tríd an gcroí PTC chun lúb a dhéanamh, agus teasaíonn an croí le luach friotaíochta. suas.
Cábla téimh cumhachta seasmhach: Nuair a bhíonn an sreang inslithe á fhuinneamh, téann an sruth tríd an sreang téimh, agus gineann an sreang teasa teas agus aistríonn sé teas.
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.