General
Operating voltage	450/750 V
Number of conductors	3
Core cross section	1,5 mm²
Insulating material	PUR
Wire identification	Colours
Signal colour	Yellow
Pull-out length	up to 3.5 times the closed spiral length
Temperature range	wide
Chemical resistance	mineral oil-based lubricants, diluted acids, aqueous alkaline solutions
Application areas	machine engineering, construction industry, medical devices, damp rooms, outdoor use
Cable type	Coiled cable
Material outer sheath	PUR
Closed spiral length	300 to 1000 mm

The spiral cable ÖLFLEX® SPIRAL 540 P 3G1,5/300 from Lapp is a flexible, robust rubber hose cable with PUR insulation, specifically designed for dynamic applications requiring repeated extension and retraction movements. The cable features three conductors, each with a cross-section of 1.5 mm², and is available in a closed spiral length ranging from 300 mm to 1000 mm. It is designed for use in harsh environments, particularly in the machine construction industry, construction, medical devices, as well as in damp rooms or outdoor areas. The signal colour of the outer sheath enhances visual recognition and contributes to safety.

Applications
This cable is suitable for applications requiring high mechanical load capacity and mobility. It is commonly used in machines and plants where moving parts such as swing arms, lifting frames, or conveyor systems need to be supplied with electrical power. The operating conditions include harsh environments, damp rooms, and outdoor use, with the cable also being applicable in medical devices, provided the respective hygiene and safety requirements are met. The high retraction force and extension length up to 3.5 times the closed spiral length enable efficient movement without mechanical damage.

Functions and Equipment in Detail
The cable consists of a PUR sheath, offering high mechanical strength and chemical resistance. It is insensitive to many mineral oil-based lubricants, diluted acids, aqueous alkaline solutions, and other chemical media. Conductor identification is done by colour, enabling easy assignment and wiring. The signal colour of the outer sheath serves visual recognition and improves operational safety. The high retraction force ensures the cable automatically returns to its initial position after extension, enhancing operational safety.

Technology Explained Simply
The spiral cable is designed for an operating voltage of U0/U: 450/750 V, making it suitable for a wide range of industrial applications. The PUR sheath provides a broad temperature range, enabling use in climatically harsh environments. The spiral cable construction ensures the cable does not twist or become overloaded during movement, but instead extends elastically and retracts automatically. The extension length can reach up to 3.5 times the closed spiral length, ensuring high mobility. The high retraction force reduces the need for additional mechanical retraction mechanisms.

Compatibility and Accessories
The cable is designed for use in systems requiring flexible, repeated movement. It can be combined with suitable connectors, cable lugs, or other connection elements required for the specific application. Compatibility with other components depends on the specific requirements of the system, particularly regarding mechanical load capacity and electrical parameters. The signal colour of the outer sheath can be used for better identification in complex systems.

Installation and Mounting
Mounting typically involves securing the spiral to a fixed point, with the other end attached to the moving component. The attachment must ensure the spiral is not overloaded and movement freedom is maintained. Installation does not require special tools, but mechanical load and direction of movement should be considered to ensure optimal function. Wiring is done via the colour-coded conductors, with connections made according to the electrical circuit diagrams.

Operational Advantages
The cable offers high service life under harsh operating conditions, thanks to the durable PUR sheath material. Its insensitivity to chemical agents such as mineral oil-based lubricants or diluted acids reduces the risk of material damage. The high retraction force and large extension length ensure reliable and low-maintenance operation. The signal colour of the outer sheath improves visibility and contributes to safety, especially in complex systems or emergencies. The cable is suitable for use in damp rooms and outdoor environments, increasing its versatility.