Лента защитно-сигнальная (ЛЗС)
LZS protective and signal tape is an inexpensive and effective way to identify the place of laying a power cable and protect it from possible mechanical damage during any excavation work.
The area of application of LZS is cable power lines up to 35 kV, including category I power supply reliability. The protective-signal tape can be used, in contrast to FEL, over cable sleeves and on supplies to switchgears and substations within a radius of 5 meters for any type of soil.
LZS characteristics and the procedure for its application
The protective-signal tape is a new means of protecting underground electrical cables from mechanical damage, while simultaneously marking the place of its laying, which was developed and created to displace concrete slabs and bricks from this area.
LZS is a bright red tape with a black inscription "Caution, cable" in Russian and English. A protective signal tape is made of a dense and elastic composite polymer with a thickness of 3.5 mm, so it is able not only to warn about the laid cable, but also to protect it from damage.
The material does not decompose, does not rot, and is environmentally friendly. The tape is perfectly visible when opening the ground, it does not lose its properties and color saturation over the years.
The belt is produced in widths of 125 and 250 mm and is supplied in rollers.
Apart from the inscription "CAUTION: CABLE", the protective-signal tape may contain other information, for example, the logo of the company that laid the cable and its contact details.
The LZS should be laid in a trench above the cable at a distance of 250 mm from its outer sheath. To protect one cable in a trench, a 125 mm wide tape is sufficient; for two cables, a 250 mm tape should be selected. When laying several cables in a trench, protective and signaling tapes are laid tightly without gaps between them, completely covering the cable laid under them.
Protective and signaling tape is the most affordable, simple and effective means not only to draw attention to the cable power transmission line laid in the ground, but also to protect it from possible damage.
Thus, with all the external similarity of the signal tape and the protective-signal tape, these products are different and their use in the construction of power cable lines under the ground has its own characteristics.