Principle and characteristics of self-limiting medium temperature tracing belt

Electropolymer and two parallel metal wires and insulation layer. Its characteristics are conductive polymer has a very high positive temperature number "PTC" characteristics, and parallel with each other, can be heated with the temperature change of the system automatically adjust the output power, automatic limit heating temperature, can be arbitrarily cut short or in a certain range of long use.

Composition structure of self-limiting medium temperature tracing zone

(1) Copper bus :7*0.42, 7*0.50, 19*0.32.

(2) Heating core: normal positive temperature coefficient, flame retardant positive temperature coefficient,

(3) Insulating layer: modified polyolefin, flame retardant polyolefin, fluorinated polyolefin and perfluorinated materials. Fluoride PTC.

(4) Shielding layer: tinned soft round copper wire braided layer.

(5) Sheath: modified polyolefin, flame retardant polyolefin, fluorinated polyolefin and perfluorinated materials.

Technical specifications of self-limiting medium temperature tracing belt

Standard color: orange, brown

Temperature range: z.u I maintain high temperature is 105 ℃ | z.u I high surface temperature of 105 ℃ + / - 5 ℃, z.u I high bearing temperature is 135 ℃

Construction temperature: z.uli low: - 30℃

Thermal stability: After 300 cycles from 10℃ to 149℃, the calorific value of the cable remains at 90%

Bending radius :25.4 mm; Room temperature 20 ℃; 35.0 mm at -30℃

Insulation resistance: When the cable length is 100 meters and the ambient temperature is 75℃, shake it with a 2500 VDC electric shaker for 1 minute. Z.uli small insulation resistance (between conductor and shield) is 3000 meters

Working voltage :12V 24V 36V 110V 220V 380V

Output power at 10 ° c :25W/m 35W/m 40W/m 45W/m 50W/m 60W/m

Explosion-proof type label :Exe ⅱ T4