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Our type 3FL silicone long rod insulators combine the highest levels of electrical insulation and mechanical tensile strength in a compact, lightweight design. According to long-established Siemens tradition, every production step is rigorously monitored and controlled. All 3FL long rod insulators are designed and tested in compliance with the latest norms and standards.
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Thanks to their superior design and low weight, 3FL long rod insulators are especially suitable for overhead compact-line applications. They are also more economical to transport and install, and make it possible to build more space-saving electricity poles.
The 3FL insulator housing is a one-piece HTV1 silicone rubber housing made in a one-shot injection molding process. The HTV silicone is directly molded onto the FRP2 rod by overlapping the triple junction point and part of the metal end fittings.
Silicone rubber housing for best pollution layer performance
1 Rated lightning impulse withstand voltage according to 60071-1
2 Rated switching impulse withstand voltage is not applicable for system voltages with Um < 300 kV
3 Rated short duration power frequency withstand voltage level is not applicable for system voltages with Um > 245kV