Manual drive for a connector with earthing, overhead mounting, rotary movement of NRA ŻN-12 w.I 03-556

Manual drive for grounded disconnectors – reliability and functionality

This manual drive, designed for grounded disconnectors, is a key element in switching and protecting overhead lines. It is used to manually control the disconnector, enabling safe and controlled switching of circuits on and off. Mounting above the line provides convenience and accessibility during maintenance and repairs. The rotational movement of the NRA drive ŻN-12 w.I guarantees smooth and precise operation, and its solid construction ensures long-term reliability even in harsh weather conditions.

Design and application

The NRA(u) type manual drive is an integral part of ALPAR air disconnectors, such as ON, OUN, ONp, OUNp, ONM and OUNM III SA 24/4. It allows control of three-pole disconnectors with a common base or support beam. Mounting is done with two M10 screws to the disconnector drive mechanism. The drive design is intended to ensure simultaneous closing and opening of all poles of the disconnector, which increases the safety and efficiency of switching operations. In addition, this drive can be used in both horizontal and vertical lines.

Advantages for installers and users

• Versatility: Compatible with a wide range of ALPAR disconnectors, simplifying the installation and replacement process.
• Solid construction: Ensures long-term reliability and minimizes the need for frequent repairs.
• Precise control: Rotational movement allows for smooth and controlled switching of circuits.
• Easy installation: Mounting with two M10 screws speeds up the installation process.
• Safety: Simultaneous closing/opening of poles increases the safety of switching operations.
• Corrosion protection: Hot-dip zinc coating provides resistance to weathering.
• Adaptation to different configurations: The ability to use in horizontal and vertical lines increases installation flexibility.

The NRA(u) manual drive is a proven piece of equipment for professionals involved in the construction and maintenance of power grids and for end-users looking for a reliable solution for manual control of grounded disconnectors. Its solid construction and precise operation guarantee safe and efficient operation for a long time.