General
Conductor diameter	0,8 mm
Nominal voltage	300 V
Test voltage	800 V
Loop resistance	73,2 Ohm/km
Current carrying capacity	5,1 A
Operating capacity	100 nF/km
Insulation resistance	100 MOhm x km
Capacitive coupling K1	300 pF
Capacitive coupling K9-12	100 pF
Line attenuation	1,1 dB/km
Temperature range	-5 to +50 °C
Operation temperature	+70 °C
Bending radius	7.5 x cable diameter -
Bend radius single without tension	2.5 x cable diameter -
Burning behaviour	VDE 0472 Part 804, test type C -
Wire insulation	Cross-linked polymer HI1 -
Outer sheath	Polyolefin blend HM2 -
Sheath colour	Grey RAL 7001
Static shield	plastic-laminated metal foil with bare twin wire -
Stranding	4 conductors to star quad, 5 star quads to bundle -
Application	Telecommunication and information processing systems -
Installation	on, in and under plaster -
Features	halogen-free, low flame spread, minimal smoke development, no corrosive gases -

The J-H(St)H 2X2X0,8 Bd grey from VDE-Kabel is a halogen-free installation cable for telecommunication and information processing systems. It is used for the transmission of telephone, measurement, and signal signals, as well as in telephone station and private branch exchange installations for telecommunication systems of all classes. The cable is intended for use in dry and damp operating environments and can be installed on, in, and under plaster. Its static screen ensures reliable limitation of external electromagnetic interference alternating fields, improving signal quality in electrically noisy environments. In the event of fire, no hazardous halogen-containing gases are produced, and smoke development is minimal, increasing safety within the building.

Applications
This cable is suitable for use in buildings with high requirements for fire protection and signal transmission technology. It is used in office buildings, industrial facilities, hospitals, and other institutions where reliable communication and minimal smoke development during fire are required. Installation takes place indoors, where the cable can be installed in open routing, in conjunction with plaster layers, or within cable ducts.

Functions and Equipment in Detail
The cable consists of bare, single-strand copper conductors with a diameter of 0.8 mm. The conductors are insulated with cross-linked polymer HI1 according to VDE 0207 Part 23 and marked according to VDE 0815. The stranding is done in star quads (4 conductors per star quad), with 5 star quads bundled together. The bundle is layered with tape. The static screen consists of a plastic-laminated metal foil (metal side inward) and a bare twin wire, ensuring effective shielding against external electromagnetic interference. The outer sheath is made of a polyolefin mixture HM2 according to VDE 0207 Part 24, halogen-free and flame-retardant. The sheath color is grey (RAL 7001).

Technology Explained Simply
The rated voltage is 300 V, with a test voltage of 800 V. The loop resistance is 73.2 Ohm/km, enabling low signal attenuation over long distances. The current-carrying capacity is 5.1 A, and the operating capacitance is 100 nF/km. The insulation resistance is 100 MOhm x km, ensuring high insulation quality and minimal leakage currents. The capacitive coupling (K1) is 300 pF, and coupling K9-12 is 100 pF (at 100 m and 800 Hz). The cable attenuation is approximately 1.1 dB/km (at 800 Hz), enabling clear signal transmission over long distances. The maximum operating temperature is +70 °C, with a temperature range of -5 °C to +50 °C. The bending radius is 7.5 times the cable diameter for normal bending and 2.5 times for single bending without tension. The burning behavior conforms to VDE 0472 Part 804, test method C (equivalent to IEC 332-1), demonstrating low flame propagation and flame-retardant properties.

Compatibility and Accessories
The cable is designed for use in telecommunication and information processing systems. It is compatible with standard connection and amplifier technology for telephone and signal transmission. Use in combination with other halogen-free cables and lines is possible, provided electrical and mechanical requirements are matched. The cable can be connected using standard cable lugs, connectors, and cable glands suitable for the rated voltage and conductor diameter.

Installation and Mounting
Installation is carried out indoors, where the cable can be laid on, in, and under plaster. Bending radii must be observed during installation to avoid mechanical damage. During mounting, it must be ensured that the static shielding is not damaged, as this could impair electromagnetic shielding effectiveness. The cable is suitable for use in dry and damp environments, but not intended for outdoor use, as no specific protection rating such as IP67 is specified.

Operational Advantages
The halogen-free composition of the cable reduces the formation of toxic gases and minimizes smoke development in case of fire, improving evacuation and user safety. The flame-retardant properties and low flame propagation enhance fire protection safety. The static shielding ensures reliable signal transmission, even in electrically noisy environments. The high insulation quality and low cable attenuation enable clear and stable signal transmission over long distances. The cable is suitable for use in buildings with high requirements for safety and signal quality.