TVI crossarms are designed for securing and insulating insulated conductors of the SIP-3 type on intermediate supports of AC overhead power lines with voltages of 6–35 kV and frequencies up to 100 Hz. They operate within a temperature range from -60 °C to +50 °C and conform to the UHL 1 climatic version according to GOST 15150.

Design and Features:

• High factory readiness: Crossarms are supplied with a clamp and necessary fasteners, simplifying installation.
• Simplified conductor deployment: The design allows for the deployment of SIP-3 conductors directly over the central insulator, including outer phase conductors, without the use of deployment rollers, reducing installation time and cost.

Modifications and Technical Specifications:

Crossarms are manufactured for various voltage classes:

• 6–10 kV: According to TU 3494-007-82442590-2008.
• 20–35 kV: According to TU 3494-022-82442590-2012.

Designation Structure:

• T: Crossarm.
• V: Fan-type.
• I: Insulating.
• 6; 10; 12.5; 16: Rated mechanical bending strength of insulators, kN.
• 10, 20, 35: Voltage class, kV.
• P, F: Type of insulators (P — polymer insulators of the OLSK type, F — porcelain insulators of the OLF type).
• J, D, S: Material of the support pole (J — reinforced concrete, D — wooden, S — steel polygonal).
• 01; 02; 03, etc.: Variant of crossarm attachment to the pole.
• 2, 4: Maximum permissible pollution degree according to GOST 9920 (PUE).
• UHL 1: Climatic version and placement category according to GOST 15150.