Air disconnect-earthing switch OUNMp III SA 24/4 03-018

Aerial disconnect-earthing switch – a key element of safety and network reliability.

The aerial disconnect-earthing switch OUNMp III SA 24/4 is a device designed for safely disconnecting and grounding overhead lines. It is indispensable in emergency situations, during maintenance work, and when performing repairs in the power grid. The device's construction provides effective protection for personnel and equipment against accidental contact with energized conductors.

Construction and practical application

The device consists of a series of components that work together to guarantee correct operation. The set includes mounting elements, insulators, grounding conductors, and a drive mechanism (optional). The disconnect-earthing switch finds wide application in transformer stations, overhead switchgear, and medium-voltage transmission lines. Thanks to its design, it enables quick and safe disconnection of a damaged section of the network, minimizing the risk of spreading the failure.

Advantages and benefits for professionals and users

• Safety first: Provides effective disconnection and grounding of lines, protecting personnel from electric shock.
• Rapid intervention: Enables quick disconnection of a damaged section of the network, reducing downtime and minimizing losses.
• Versatility: Can be used in various power grid configurations.
• Durability and reliability: Made of high-quality materials, resistant to weathering and corrosion.
• Easy installation: Simple construction facilitates installation and servicing of the device – particularly important during field work.
• Compliance with standards: Meets the requirements of applicable safety standards (PN-85/M-82105).
• Compatibility with different types of poles: Possibility of mounting on poles with different parameters (e.g., poles with a length of 10.5m, 12m, 13.5m or 15m).

It is important to remember to select appropriate mounting elements (e.g., OB-6/E clamps) and check the permissible load of the pole before installing the device. Choosing the right manual drive (type NRU-C) is crucial for the proper operation of the OUN disconnect switch or RUN disconnector.