Wuhu Jiahong New Material Co., Ltd.

Introduction

Jiahong Self-Regulating Heating Cable is formed by electrical polymer (plastic) and two parallel metal wires and insulating layer. Its characteristic is that electrical polymer has very high positive temperature coefficient "PTC", and already in mutual parallel connection, can automatically adjust output power with temperature changing, and automatically limit the heating temperature. It also can be arbitrarily shortened or lengthened in a definite scope, and can be allowed to multiply cross or superpose without any anxiety about no high temperature heat point or burning. Therefore, the character of above stated zonary constant temperature is that it fits for the heated system, but the traditional power-limiting heater oppositely influences the heated system. So the practical advantages of this self-regulating heating cable are as following:
1. The relevant heated system of electrothermal cable has the automatic adjusting output power, thereby will not burn the new generation energy-conservative constant temperature heater because of self heating.
2. Start up quickly in low temperature status, and temperature is very equal, so each part can automatically adjust temperature in terms of the temperature changing of heated point.
3. Easy installation, simple maintenance, all-day service, high-level automatization, low cost of operation and maintenance.
Safe and reliable, wide usage, no-pollution for environment, and longevity of service.
(1) Power-Temperature Characteristic
This characteristic is detected in stimulating the temperature situation of the heating pipeline. With the increasing of system temperature, power almost decreases linearly, its slope is the decrement of electrothermal cable power when system changes every 1degree, and it reflects the automatic adjustment capability of power with temperature changing. We should point out, the power of electrothermal cable is stably-status parameter, and there are many influence factor, accordingly cannot simply calculate by the way of current multiplying voltage.
(2) Highest Maintaining Temperature
Heating one system by electrothermal cable, if in unit time, the quantity of heat transferring from cable to system equals to that from system to environment, so the temperature of will keep unchangeable.
(3) Highest Tolerated Temperature
Electrothermal cable can tolerate the influence of outer heat source under a definite temperature, after higher than this temperature, power will slowly decline and it is accumulated. Consequently, please do not exceed the highest tolerated temperature. This parameter is choosing one of the primary parameters of electrothermal cable.
(4) Highest Surface Temperature
Put electrothermal cable of enough length in an airtight container, the highest temperature reached under the rated voltage is the highest surface temperature. This parameter is very important to the occasions with tinder or explosive gas.
(5) Maximum Length of Usage
Electrothermal Cable can be cut discretionarily, but only can be jointed to get longer in a certain scope; in another word, cannot be allowed to exceed the maximum length of usage, which is related to rated voltage, power scale and lowest ambient temperature in use. If the required length exceeds the maximum of usage length of Electrothermal Cable, we should connect another power supply or choose king-size Electrothermal Cable of special standard.