High temperature round electric heating cable (KENV)
High temperature round electric heating cable is used as a round heating wire. The core made of precision nichrome or fecralalloys, due to their high electrical resistance, provides heat generation when the voltage is applied. The shell around the conductive core serves to protect it from the external environment on the one side and to isolate areas under voltage on the other.
In the company Metotechnics you can buy a high temperature heating cable in the form of wire. Grades of high temperature round electric heating cable and others are available for order that can be made in different ways (phone, fax, email, website).
More information about the materials, production methods, and application areas of the described products is provided on the appropriate sections of this page. An important source of information is the standards, which are also presented on the site.
Application area
The cable is intended for use as a heating element for cylinders and heads of plastic extruders, molding machines, molten bitumen pipelines, in drying cabinets and many other multipurpose installations. The installation method is fixed. Due to the fact that the insulation of the product is not moisture-resistant, it is not allowed to supply operating voltage to the wire in wet rooms without first removing moisture or condensate from it.
Design
The cable consists of a heater made of nichrome or fecral wire. A two-layer insulation based on heat-resistant filaments made of glass fiber, silica or quartz fiber is applied by the method of entire braiding over the heater.
The heater material
Insulation material
Maximum operating temperature, °C
Nichrome alloy wire of the grade Ni80Cr20, GOST 12766.1-90
Fecral alloy wire of the grade H23YU5T, GOST 8803-89
Glass filament of the grade VMPS, technical conditions 6-48-117-94
The design features of the product are presented in the document technical conditions 4833-011-66158671-2013 and must meet its requirements.
Conditional designation
High temperature round electric heating cable:
KENV NH 1200-1,0
KENV - product name;
NH (nichrome) - core material;
1200 - maximum operating temperature, °C;
1.0 - diametrical thickness of the core, mm.
Technical parameters
Heater wire diameter: 0.1-2.0 mm.
Diametrical thickness of the insulation: ≥ 1 mm.
Insulation breakdown voltage: ≥ 1250 V.
The full list of the product technical parameters is provided in the standard technical conditions 4833-011-66158671-2013.
Operating conditions
The minimum bending radius for the wire when winding it on the rod must be no less than 10 product diameters.
It is not allowed to use a wire wound in two or more layers to avoid overheating.
The installation method is fixed.
It is not allowed to store, install, or use KENV at a relative humidity of more than 80%.
When the cable is switched on for the first time, smoke may be emitted because of the burnout of the technological lubricant used in the process of production the component elements of the product.
Supply options
On customer request, it is possible to produce a wire impregnated with organosilicon varnish for use in wet rooms with a cable heating temperature of no more than 500 °C. The minimum length of the delivered products is 200 m.
Prices
The Cost section provides with prices for high temperature round electric heating cable
and also the characteristics of specific items available for order.