Air disconnect switch, modular - vertical 100A RNMp III SA 24/4/100K 03-723

Product features

• Reliable network disconnection – a modular air disconnect provides reliable network protection.

The modular air disconnect RNMp III SA 24/4/100K is a device designed for the safe switching on and off of electrical circuits in overhead networks. The modular design allows for flexible adaptation to different configurations and mounting conditions. It is a key element of the energy infrastructure, providing effective protection and the possibility of servicing the lines.

Construction and application

This disconnect, designated RNMp III SA 24/4/100K, is a three-pole modular device designed for vertical mounting. Its construction is based on a common frame or supporting beam, which facilitates installation and ensures stability. Each pole consists of supporting insulators – one fixed and one movable – and current paths. It is used in networks with a rated voltage of 24 kV, and its insulation level is 125 kV / 50 kV. The possibility of using porcelain, silicone or composite insulators allows adaptation to specific environmental and operational requirements.

Key features and benefits

• Modular construction: Enables flexible configuration of the disconnect, adapting it to specific installation needs. This is particularly important when modernizing existing networks or in unusual pole configurations.
• Vertical mounting: Designed for vertical mounting on poles, ensuring optimal use of space and easy access to the device during maintenance.
• Common drive: A common drive for all poles guarantees simultaneous closing and opening of circuits, which increases operational safety.
• Different types of insulators: The ability to choose between porcelain, silicone or composite insulators allows for cost optimization and adaptation to environmental conditions (e.g. industrial pollution, coastal areas). Silicone insulators are characterized by better resistance to weather conditions and pollution.
• Adaptation to surge arrester: Availability of a version adapted for mounting a surge arrester increases the level of protection of the installation against the effects of current surges.
• Mechanical strength: Solid construction ensures long-lasting and reliable operation even in difficult operating conditions.
• Easy servicing: The modular construction facilitates the replacement of individual elements in the event of a failure, reducing installation downtime.

Applications

The RNMp III SA 24/4/100K disconnect is used in:

• Medium voltage (MV) distribution networks: As an element disconnecting circuits powering end users.
• MV/LV transformer stations: To disconnect transformers from the network for maintenance or repair work.
• Overhead lines: To safely disconnect sections of lines during repair or emergency work.
• Connections to the power grid: As a protective element for connections of industrial and commercial customers.

Compatibility and standards

The device has been designed and manufactured in accordance with applicable safety standards and technical requirements for electrical equipment. Detailed information on compliance with standards is available in the manufacturer's (ALPAR) technical documentation. The disconnect is compatible with various types of manual (NRA(u)) and motor drives (NEA), which facilitates integration with existing control systems.