Constant Wattage Silicone Heating Wire
Constant wattage parallel circuit silicone rubber insulated heating wire makes use of two tinned copper conductors as bus wires. The heating wires connect to each busbar alternantly at constant spacing forming a heater module. All heater modules will have the same watts (constant wattage) and are virtually connected in parallel (parallel circuit).
The most obvious advantage of the product is that they can be cut to length on site based on your power demand. They have been widely used in refrigeration applications. Tinned copper braid is available for mechanical protection and earthing.
As current flows along each conductor core, voltage drop will be produced due to linear resistance. Therefore the wattage of the heating modules that are too far away from power supply will drop. The maximum length of the constant wattage heating cable is specified in the datasheet.
The section between the cable cut and the closest contact point is an open circuit, which can't heat up in operation. This section will act as a built-in cold tail. No further connection is needed. The cable cut can be fit with silicone rubber end cap for enhanced insulation and moisture protection.
|Power Line Density||25W/m||40W/m||50W/m|
|Supply Voltage||230V (115V on request)|
|Conductor Core Size||0.75 mm2|
|Conductor Insulation||Silicone Rubber|
|Heating Element||Cu-Ni Alloy Wire||Cu-Ni Alloy Wire||NiCr Alloy Wire|
|Sheath Material||Silicone Rubber|
|Cross Section Profile||Flat Oval, 5.4mmx7.3mm|