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 (IEC 332-1)
Conductor	Copper bare, solid
Insulation	PVC according to VDE 0207
Sheath colour	light blue RAL 5015
Application	internal wiring, doorbell and signaling systems

The H05V-U 0,75HBL-RAL 5015 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 in accordance with VDE 0207, providing high mechanical and chemical resistance. The sheath color complies with standard VDE 0293-308 and is executed in light blue (RAL 5015), enabling clear identification within the installation network.

Applications

The cable is intended for use in enclosed and protected installations, for example in indoor wiring of household appliances, lighting systems, or in electrical signaling systems. It is not suitable for outdoor use or in damp environments, as no specific protection criteria such as IP rating or moisture resistance are specified. Installation is carried out in conduits, in pipes, on or under plaster, with ambient conditions during installation and operation not exceeding certain temperature limits.

Functions and Equipment in Detail

The cable has a rated voltage of 300/500 V, making it suitable for typical low-voltage applications in households and industry. The test voltage is 2000 V, confirming the electrical strength of the insulation under test conditions. The maximum operating temperature is +70 °C, with the cable required to withstand temperatures from +5 °C to +70 °C during installation. After installation, a temperature range of -30 °C to +70 °C is permissible, allowing use in climatically variable indoor environments. The minimum bending radius is 15 times the cable diameter, requiring careful bending during installation to maintain mechanical integrity.

Technology Explained Simply

The cable is rigid, meaning it is not designed for frequent movement or bending. The PVC insulation provides good protection against mechanical stress and moisture, but not against aggressive chemicals or high temperatures. Flame retardancy corresponds to test method B according to VDE 0472 T. 804 (equivalent to IEC 332-1), meaning the cable does not produce flaming droplets during a fire test, thus presenting limited fire hazard. The light blue color (RAL 5015) serves visual differentiation within the installation network, particularly in signaling systems where color coding plays a role.

Compatibility and Accessories

The cable is intended for use in signaling and doorbell systems, with compatibility ensured for standard connectors, terminals, and switches for low-voltage applications. The cable is supplied in a 100-meter reel, enabling continuous installation without additional connections.

Installation and Mounting

Installation requires careful bending within the specified bending radius of 15 times the cable diameter to avoid cracks or breaks in the insulation material. Installation is carried out in protected areas, with ambient temperature during installation required to be between +5 °C and +70 °C. After installation, the cable is designed for operating temperatures up to +70 °C, with ambient temperature after installation allowed to drop to -30 °C. The cable is not intended for use in moving parts or areas subject to mechanical stress.

Advantages in Operation

The cable offers high electrical strength due to the 2000 V test voltage and stable PVC insulation, suitable for indoor applications. The color coding in light blue (RAL 5015) facilitates identification within the installation network, especially in signaling systems. Flame retardancy according to VDE 0472 T. 804 test method B ensures limited fire hazard. The cable is supplied in a 100-meter reel, enabling efficient installation without additional connections. Specific use in doorbell and signaling systems ensures the cable is optimized for these application scenarios.