General
Conductor	Copper stranded wire, bare, fine-stranded
Wire insulation	PVC
Conductor marking	DIN 47100 colour code
Sheath	PVC
Colour	Grey
Nominal voltage	500 V
Test voltage	1200 V
Temperature range in motion	-5 to +70 °C
Temperature range, non-operating	-40 to +80 °C
Bending radius	15 x cable diameter
Flame retardancy	according to VDE 0472 T. 804, test type B (IEC 332-1)
Number of cores	4
Core cross section	0,34 mm²

The control cable LIYY 4x0.34 from böhm Kabel is a data and control cable for use in signal, measurement, control, and intercom systems. It is used as a connection and interconnection cable for call and intercom systems, clock systems, weighing installations, and computing systems. The cable is suitable for both fixed and flexible applications, where the cable is moved freely without tensile stress and without forced movement guidance. It can be installed in dry, damp, and wet rooms. Due to its small outer diameter, wiring in confined spaces with small bending radii is possible.

Applications

The cable is suitable for a wide range of applications in the field of building and automation technology. It is frequently used in alarm systems, intercom and call systems, as well as in industrial control systems. The cable can be used in indoor environments as well as in areas with increased humidity, as long as there is no direct water exposure or permanent dampness. The cable is not intended for outdoor use or in wet environments with direct water exposure.

Functions and Equipment in Detail

The cable consists of four individual conductors, each with a cross-section of 0.34 mm². Each conductor is protected by PVC insulation and is color-coded according to DIN 47100 to enable clear identification and wiring. The conductors are stranded in layers, ensuring even distribution of mechanical stress and improved flexibility. The outer sheath is also made of PVC and is gray in color, allowing for good visibility and identification in the cabling area.

Technology Explained Simply

The cable is rated for a nominal voltage of 500 V, as the cross-section of 0.34 mm² is greater than 0.25 mm². The test voltage is 1200 V, confirming the electrical strength of the insulation under test conditions. The temperature resistance is -5 °C to +70 °C when the cable is moved, and -40 °C to +80 °C when it is not moved. This allows use in rooms with varying temperature conditions, as long as cable movement corresponds to the application. The bending radius is 15 times the cable diameter, which is sufficient for flexible applications. The flame retardancy corresponds to test method B according to VDE 0472 Part 804 (equivalent to IEC 332-1), ensuring limited flame spread in case of fire.

Compatibility and Accessories

The cable is compatible with standard connectors and sockets designed for data and control cables with PVC insulation and a cross-section of 0.34 mm². It can be used in combination with other cables of type LIYY or LIYCY, especially in systems requiring clear color coding and mechanical stability. The use of appropriate cable lugs, connectors, or cable glands is recommended to ensure a secure and durable connection.

Installation and Mounting

Installation is carried out by laying in cable ducts, shafts, or open runs, while observing mechanical stresses and bending radii. The cable must not be pulled or kinked to maintain the integrity of the conductors and insulation. In flexible applications, care should be taken to ensure that cable movement is not too frequent or forceful to extend service life. Installation in damp or wet rooms is permissible as long as there is no direct water exposure.

Operational Advantages

The cable offers high mechanical stability and electrical reliability. The PVC insulation provides good electrical insulation and chemical resistance. Color coding according to DIN 47100 facilitates identification and wiring. The small profile allows compact installation, especially in existing installations with limited space. Flame retardancy according to VDE 0472 Part 804, test method B, increases safety in case of fire.

Protection Rating

The cable is not intended for outdoor use or in wet environments with direct water exposure. The temperature resistance and flame retardancy specifications apply to indoor and protected outdoor areas without direct dampness. The cable is not classified as waterproof or dust-tight, as no IP protection rating is specified.

Core Function

The core function of the cable is the transmission of control and signal information over short to medium distances in electrical and electronic systems. The cable is not designed for power transmission, but for signal transmission in control and communication systems.

Technology

The technology is based on PVC insulation and a PVC sheath, providing high electrical insulation and mechanical stability. The stranding of conductors in layers ensures even distribution of mechanical stress and improves flexibility.

Standard

The cable complies with VDE 0472 Part 804 (test method B) and IEC 332-1 regarding flame retardancy. Conductor identification is according to DIN 47100.