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	in accordance with VDE 0472 Part 804, test type B
Conductor	bare copper, fine-stranded
Insulation	PVC according to VDE 0207
Sheath colour	Transparent

The H05V-K 0.75 TRANS is a flexible PVC wiring cable from manufacturer Norbert Kordes, intended for internal wiring of devices and for protected installations in and on luminaires, in conduits, on and under plaster. The cable is specifically designed for use in doorbell and signaling systems. It features a bare, fine-stranded copper conductor and PVC insulation in accordance with VDE 0207, with the sheath color complying with VDE 0293 standards. The transparent version allows for visual inspection of the cable in the installation area.

Applications
This cable is suitable for use in enclosed devices, lighting systems, and installed wiring where a flexible yet stable connection is required. Due to its intended use in doorbell and signaling systems, it is not suitable for general high-current applications or for direct outdoor use. Installation must take place exclusively in protected areas, such as conduits, pipes, or under plaster, to minimize mechanical stress and environmental influences.

Functions and Features in Detail
The conductor is made of bare, fine-stranded copper, ensuring high flexibility and good electrical conductivity. The PVC insulation provides sufficient electrical insulation resistance and protects the conductor from external influences. The transparent sheath color facilitates identification and inspection of the cable in the installation area. The cable is rated for a nominal voltage of 300/500 V, making it suitable for typical low-voltage applications in signaling and doorbell systems.

Technical Explanation
The maximum operating temperature is +70 °C, with the cable able to withstand temperatures between +5 °C and +70 °C during installation. After installation, it is rated for temperatures from -30 °C to +70 °C, enabling use in climate-varying indoor environments. The minimum bending radius is 15 times the cable diameter, ensuring flexible installation without mechanical damage to the conductor. The test voltage of 2000 V ensures electrical safety and insulation quality. Flame retardancy according to VDE 0472 T. 804, test method B (equivalent to IEC 332-1), indicates that the cable exhibits limited flame spread in case of fire, which is relevant for use in enclosed spaces.

Compatibility and Accessories
The cable is intended for use in conjunction with other components of doorbell and signaling systems, such as doorbell pushbuttons, doorbell alternating current devices, or signaling transmitters. Use in conduits or pipes requires appropriate conduit systems to ensure protection of the cable. The transparent design enables easy inspection of the installation, especially during repairs or maintenance work.

Installation and Mounting
Installation must comply with the specified installation conditions: in protected areas, in conduits, pipes, on or under plaster. The cable must not be installed outdoors or in damp, unprotected areas. Installation should occur at temperatures between +5 °C and +70 °C. The minimum bending radius of 15 times the cable diameter must be observed to avoid damaging the conductor. The cable is not suitable for direct contact with aggressive chemicals or strong mechanical loads.

Operational Advantages
The H05V-K 0.75 TRANS offers high flexibility and electrical reliability for use in signaling and doorbell systems. The transparent insulation facilitates visual inspection and maintenance. Flame retardancy according to VDE 0472 T. 804, test method B, enhances operational safety. The cable is rated for an operating temperature up to +70 °C, ensuring stable performance in indoor environments. Use in protected installation areas ensures long service life and reliable function.