Matters needing attention in the installation process of electric heating cable
Information source: Web excerpt Views: 1431 Release time: 2018-01-30
Electric heating cables are widely used in all walks of life due to the obvious heat insulation effect, energy saving, environmental protection and safety. At present, it has become one of the main measures adopted in domestic antifreeze insulation and process dimension maintenance. Here are some things you need to pay attention to during the installation of the electric heating cable for your reference.
Electric heating cable installation process:
(1) Electric heating cables can be used for thermal insulation of factory pipelines and transportation pipelines in northern cities. When installing devices, avoid dark corners such as oil and gas accumulation.
(2) When the electric heating cable is installed, it should be carried out after the pipeline system is fully installed and commissioned.
(3) The electric heating cable has all-weather protection. When installing, you should think about protection, convenience, neatness and beauty, and do not make the system accumulate rain and snow.
(4) After the installation of the electric heating cable, the insulation resistance of the system should be checked one by one: the insulation resistance between the various core wires between the various electric heating bus bars and the shielding layer, before the end of the series-connected core wire is shorted. Less than 20MΩ; then check whether the DC resistance of the electric heating belt is normal and whether the three-phase resistance is balanced.
These 4 processes are the processes that must be followed when installing the electric heating cable. As long as the normal installation of the electric heating cable is good, it can also assist subsequent protection.
Matters needing attention in the process of electric heating cable installation:
(1) It is not allowed to intersperse or overlap the constant power electric heating cable device to prevent overheating and affect the service life of the product.
(2) When installing the electrical heating cable junction box, a certain amount of parallel strap should be left to facilitate maintenance.
(3) When installing the electric heating cable, consider the convenience of disassembling the pipeline valves, equipment and other accessories, and the electric heating cable should not be damaged.
(4) When the device is connected in parallel with the heating cable, pay attention to the “cold end” orientation of the two ends to ensure that the hot section of the belt is controlled at the location where heat is required: and that the core wire, heating wire and shielding layer cannot touch each other, avoid Short circuit.
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