General
Degree of protection	IP67
Operating voltage	300/500 V
Test voltage	2000 V
Temperature range	-60 to +180 °C
Wire identification	numbers
Number of conductors	24
Cross-section per conductor	1,5 mm²
Insulating material	Silicone mixture
Outer sheath	Silicone mixture
Outer sheath colour	Red-brown
Protective conductor	G
Minimum bending radius for fixed installation	4 x outer diameter
Minimum bending radius for occasional movement	15 x outer diameter
Gases in case of fire	low corrosivity
Norm	EN 50525-2-83
Halogen free
Insulating properties after flaming
CPR classification

The ÖLFLEX® HEAT 180 SiHF 24G1,5 connection cable from Lapp is a heat-resistant silicone cable designed for use in machine and plant engineering as well as in tooling technology. It is suitable for wiring control circuits in machine-internal and plant-wide applications, particularly in areas with high ambient temperatures, where conventional cable materials quickly harden or fail. The cable is flexible and designed for fixed installation as well as occasional movement without tensile stress. It can be used in dry and damp rooms and features high chemical resistance against many oils, plant and animal fats, and a wide range of chemical substances.

Applications

The cable is used in industries where high temperatures occur, such as in the steel, ceramics, and iron industries, in bakery technology and industrial oven systems, in the electric motor industry, in sauna and tanning bed constructions, as well as in lighting and fan technology. It is also suitable for air conditioning and galvanizing technology. The high heat resistance allows use in environments where the operating temperature can rise up to +180 °C, provided sufficient ventilation is ensured. Without oxygen supply, silicone cables lose their mechanical properties prematurely at around +100 °C.

Functions and Equipment in Detail

The cable features conductor identification by numbers, starting from six conductors, with the conductors marked black with white numbers. The individual conductors consist of fine-stranded, tinned copper wire according to VDE 0295 Class 5 / IEC 60228 Class 5. The insulation and outer sheath are made from a silicone compound that is halogen-free and classified according to DIN EN IEC 60754-1. The cable includes a protective earth conductor (G) coloured green-yellow. The outer sheath colour is reddish-brown.

Technology Explained Simply

The silicone compound ensures high heat resistance up to +180 °C and good cold resistance down to -60 °C. The cable retains its insulating properties even after being exposed to flame, as SiO₂ ash forms on the conductors, which acts as an electrical insulator. Flame behaviour classification is carried out according to EU Directive 305/2011 (BauPVO/CPR), with article number selection available on the LAPP website. The low corrosivity of gases during fire corresponds to DIN EN IEC 60754-2. The cable is flame-retardant according to IEC 60332-1-2. The minimum bending radius is 15 times the outer diameter for occasional movement and 4 times for fixed installation.

Compatibility and Accessories

The cable is designed for use in control and drive systems that experience high thermal loads. It is universally applicable in machine and plant-wide applications. Wiring is carried out in electrical circuits operating in industrial environments with high temperatures. The cable is not specifically designed for particular accessories but is used in standard installations.

Installation and Mounting

The cable is flexible and particularly suitable for use in limited space conditions. Installation is done by fixed routing, where the cable can be moved occasionally as long as no tensile stress occurs. Installation requires sufficient ventilation to maintain the mechanical properties of the silicone. The cable is rated for an operating voltage of U0/U 300/500 V, with a test voltage of 2000 V.

Advantages in Operation

The high heat resistance enables use in environments where other cable materials fail. The chemical resistance protects the cable from wear caused by oils, fats, and chemicals. The halogen-free compound reduces fire hazard and the formation of toxic gases. The flexible structure facilitates installation in confined spaces. The cable is suitable for use in dry and damp rooms, increasing its versatility. The electrical insulating properties are retained even after exposure to flame, enhancing safety.