Middle Temperature Self-regulating Heating Cable HWSR

Introduction:

Middle Temperature Self-regulating Heating Cable HWSR is design for hot water temperature maintain, when hot water taps are infrequently used, the water stay in the distribution pipework cools and is usually run to waste before hot water from the storage cylinder arrives at the tap. We have two types of HWSR cable, one can maintain the temperature around 50°C to 60°C, another can up to 70°C.Our HWSR cable maximum exposure temperature is 120°C.

The self-regulating heating cable (self-regulating heating cable and auto temperature control heating cable) is a new generation and the only constant temperature electric band heater. The resistivity of the heating element is of extremely high “PTC” (positive temperature coefficient) and these elements are in parallel connection. The characteristics are as follows: it can automatically restrict the heating temperature, and can automatically adjust the output power with the temperature of the heated body with no need of any other additional equipment; it can be cut or connected in a certain length at free will for use, and allows multiple overlapping with no high temperature hot spots or worry about being burnt up. By right of these characteristics, heating cables are provided with advantages including overheating prevention, convenient usage and maintenance as well as energy saving. They are applicable for temperature control, heat trace, insulation and heating of pipes, equipment and containers, especially there is any material easy to break down, deteriorate, crystallize or condense and freeze. They have been widely used in industries including petroleum, chemical industry, power, metallurgy, light industry, foods, freezing, buildings, coal gas, production and processing of agricultural byproducts as well as other departments. 

Minimum installation temperature: -20°C

Working voltage: 110V-120V / 220V-240V

Certificates: CE EAC

MOQ: 1000m

Our advantages:

Three layer co-extrusion technology

1. Conductor

2. Low resistance transition layer

3. PTC Semi-conductive

4. Inner insulation layer

5. Outer insulation layer

6. Metal braid

7. Outer jacket

1. Definition

Three-layer co-extrusion technology of self-regulating heating cables is characterized in: the cables consist of two conductive wires with a low resistance transition layers, PTC semi-conductive matrix, inner insulating layer and outer insulating layer, metal braid and outer jacket. Among them the three layers — low resistance transition layer, PTC Semi-conductive matrix and inner insulting layer are extruded in one step.

2. Advantages

A. Owing to three-layer co-extrusion technology, the inner insulating layer wrapped the PTC semi-conductive matrix tightly. No gap, no air, no water, no oil and no impurities will contaminate the matrix, which reduces the cable decay rate.

B. Low resistance transition layer contacts the PTC semi-conductive matrix tightly, effectively reducing the current impact to the material of PTC, reducing the start current, prolonging service life.

C. Most of out-sourcing insulation resin will damage the PTC matrix on the performance such as life-span and insulation safety. Huanrui improved it by using self-made special modified insulation resin, the resin matches the PTC well and avoids the damaged to both layers, with longer life-span and higher performance.

Material properties:

Excellent weather resistance and ultraviolet radiation.

High and low temperature resistance, -50°C—140°C.

Great insulating property. 2000MΩ per 100 meters.