A fire broke out at the end of the electric trace
The installation of electric heat tracing is divided into electric heat tracing on the outer wall of the equipment, electrical distribution system at the end of the junction box at the end and external insulation layer. Today, the electric heat tracing editor will briefly analyze which points of the electric heat trace installation will cause the end fire.
The end of the electric tropics needs to be sealed with a special terminal junction box or heat shrinkable sleeve, due to the structural problems of the electric tropics, the two parallel busbars have formed an internal loop, so the first two wires at the first end are directly connected to the power zero live wire to form a complete loop, the fire causes at the end of the electric trace will mainly be the following:
Well heating cables
Well heating cables
1. The tail end is a sealing section, in the installation process need to install the tail end junction box to seal, it is strictly forbidden to leak the electric tropical tail without installing the junction box, after the tail end is damp, it is easy to cause a short circuit and fire.
2. When installing the tail junction box, the outer sheath should be peeled off, the shielding layer should be peeled off, it is strictly forbidden for the electric tropical shield to access the tail junction box, the shielding net such as access to the junction box, will cause the circuit grounding, in the state of poor grounding protection contact, easy to produce electric sparks, causing fire,
3. The insulation layer at the end of the tail expands and contracts thermally, exposing the conductive part, which causes leakage and fire in a humid environment in rain and snow.
4. The use of absorbent insulating tape causes the tail end to be wet and causes leakage and fire.
