General
Nominal voltage	300/500 V
Test voltage	2000 V
Installation temperature range	+5 °C - +70 °C
Temperature range after installation	-30 °C - +70 °C
Operation temperature	+70 °C
Bending radius	15 x cable diameter
Flame retardancy	VDE 0472 T. 804 test type B
Conductor	Copper bare, solid
Insulation	PVC according to VDE 0207
Sheath colour	Violet
Colour standard	VDE 0293-308

The H05V-U 0.75VIO-R100 is a PVC-insulated wiring cable from manufacturer Norbert Kordes, designed for internal wiring of devices as well as for protected installations in and on luminaires, in conduits, on and under plaster. The cable is specifically intended for use in doorbell and signaling systems, with application limited to these systems. The cable features a bare, single-strand copper conductor, ensuring a stable electrical connection. The insulation is made of PVC, specified according to VDE 0207, and the sheath color complies with the requirements of standard VDE 0293-308, with violet (RAL 4005) being used here.

Applications

The cable is intended for use indoors, particularly in electrical devices, lighting systems, and building electrotechnics. It is suitable for installations in conduits, in pipes, on and under plaster, with installation under plaster only permitted if the cable is not subject to mechanical stress. Use is restricted to doorbell and signaling systems, meaning it is not suitable for high-current applications or for supplying heating or lighting systems with higher power.

Functions and Features in Detail

The cable has a rated voltage of 300/500 V, making it suitable for applications in low-voltage technology. The test voltage is 2000 V, highlighting the electrical strength of the insulation. The maximum operating temperature is +70 °C, and during installation, the cable must withstand temperatures from +5 °C to +70 °C. After installation, the ambient temperature may range from -30 °C to +70 °C without the cable losing its functionality. The minimum bending radius is 15 times the cable diameter, requiring careful bending during installation to ensure mechanical integrity.

Technical Explanation

The cable is rigid, meaning it is not intended for frequent movement or bending. The PVC insulation provides sufficient protection against electrical discharges and offers a certain degree of mechanical stability. Flame retardancy corresponds to test method B according to VDE 0472 Part 804 (equivalent to IEC 332-1), meaning the cable does not produce flames or flame spread beyond the test length during a fire test. This is important for safety in enclosed spaces and during installation in buildings.

Compatibility and Accessories

The cable is designed for use in standard installations, particularly in conjunction with doorbell and signaling systems. It can be used with appropriate connectors, terminals, and switching devices rated for a nominal voltage of 300/500 V. The violet color serves as a visual identifier according to VDE 0293-308, enabling clear identification during installation.

Installation and Mounting

Installation requires careful bending, with the minimum bending radius of 15 times the cable diameter to be observed. Installation is carried out in protected areas, and the cable must not be subjected to mechanical stress. Installation under plaster is only permitted if the cable is not exposed to external influences such as pressure or friction.

Operational Advantages

The cable offers high electrical strength due to the 2000 V test voltage and stable PVC insulation. The violet color facilitates identification within the installation network, especially in complex systems. Flame retardancy according to VDE 0472 Part 804, test method B, enhances safety in fire hazards. The maximum operating temperature of +70 °C allows use in rooms with moderate temperatures without the cable losing its function.