In the fields of power transmission and distribution, rail transit, etc., cable insulation protection is crucial. Volsun RUBNS-OLC silicone rubber overhead line insulating sleeve cover provides reliable protection for the safe operation of cables with its convenient installation method, excellent protection performance and wide application scenarios.

 
Volsun RUBNS-OLC series are made of high-quality silicone rubber materials, which can maintain stable performance at extreme temperatures from -50℃ to +150℃. They are both cold-resistant and high-temperature resistant, and perfectly adapt to the severe cold in the north and the high temperature environment in the equipment cabin. At the same time, its excellent weather resistance, aging resistance and corrosion resistance ensure that the performance is not reduced during long-term outdoor use, and the service life is far longer than that of ordinary sleeves.
 
Moreover, it is soft and resistant to bending, and does not damage the cable during installation; the electrical strength is as high as 20kV/mm, and the volume resistivity is as high as 1×10¹⁴Ω cm, which effectively increases the safety distance, prevents leakage marks, and ensures insulation safety in high-voltage scenarios.
 
In addition, due to the unique snap-on design, there is no need fire. Just put it into the cable and tighten it. With the help of silicone glue and cable ties, the installation time of a single cable is shortened by 60%, which greatly reduces the duration of power outages. It is especially suitable for scenarios that are sensitive to power outages, such as substations and rail transit.
 
Not only that, the excellent performance indicators also prove the protection strength of this overhead line insulating sleeve:
 

• Electrical strength: ≥20kV/mm, high insulation is suitable for cables of 10kV and above, prevents short circuits, and is suitable for high-voltage distribution line protection.

• Tensile strength: ≥4.0MPa, resistant to mechanical shock, avoids extrusion damage during construction or operation and maintenance, and extends the protection life.

• Elongation at break: ≥200% (before aging), high flexibility, can deform with the bending of the cable, does not break, and is suitable for complex wiring environments.

• Low temperature flexibility: -50℃×4h no cracks, no brittleness when used outdoors in cold areas, suitable for wind power in the north and cable protection along railways.

 
RUBNS-OLC silicone overhead line insulation sleeve is widely used in various fields, mainly for the protection of power transmission and distribution lines. As a professional manufacturer, Volsun provides conventional specifications of Ф12~Ф39.8mm, suitable for those with an outer diameter range of 50~800mm², for substation aluminum stranded wire and steel core aluminum stranded wire. No-fire installation shortens power outage time, 20kV/mm electrical strength is suitable for 10kV~220kV overhead transmission lines, and has stable performance for long-term outdoor use.
 
The wall thickness of the silicone overhead line insulation sleeve (2.0mm-6.0mm) is customized according to the voltage level, which can accurately match the insulation requirements.
 
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