BS 5839-9 Emergency Voice Communication Fire Resistant Screened Cable
BS 5839-9 Emergency Voice Communication Fire Resistant Screened Cable is a 300/500V mica-and-silicone-rubber insulated, overall-screened LSZH cable for emergency voice communication systems. The construction combines fire-resistant insulation, screened multicore design and low-smoke zero-halogen sheathing for life-safety communication circuits that require continued operation during fire conditions.
PRODUCT OVERVIEW
This 300/500V fire-resistant overall-screened control cable combines plain annealed copper conductors with a mica-glass fire-resistant tape and fire-resistant silicone-rubber insulation, an aluminum/polyester overall screen with tinned-copper drain wire, and a low-smoke zero-halogen outer sheath. The construction is designed to maintain circuit integrity during fire conditions while also providing an overall screen for control and signalling circuits.
Emergency voice communication circuits may connect control equipment, communication points and related interfaces across a building. This product provides an overall screen, tinned-copper drain arrangement and fire-resistant mica/silicone insulation system, with fire-performance references covering circuit integrity, mechanical shock and water-spray conditions.
KEY FEATURES
- 300/500V fire-resistant screened control cable.
- Plain annealed copper conductors: solid Class 1 or stranded Class 2 to IEC/EN 60228.
- Mica-glass fire-resistant tape with fire-resistant silicone-rubber insulation type EI2.
- Aluminum/polyester overall screen with tinned-copper drain wire.
- Thermoplastic LSZH outer sheath type LTS3; thermosetting LSZH SW2-SW4 can be offered.
- PH120 mechanical-shock circuit-integrity reference in the product designation.
- Operating temperature: -30°C to +90°C; installation temperature: -20°C to +50°C.
- Minimum bending radius: 7.5 × overall diameter.
- Application reference: BS 5839-9 for emergency voice communication systems.
- Fire-resistant screened construction for emergency communication control circuits.
EMERGENCY VOICE COMMUNICATION FOCUS
Emergency voice communication systems depend on communication paths that remain available during fire emergencies. The cable’s fire-resistant insulation system, LSZH outer sheath and overall screen make it suitable for screened control and communication-support circuits where project specifications call for maintained circuit integrity and reduced smoke / halogen emissions.
CABLE CONSTRUCTION
Voltage Rating | 300/500V |
Conductors | Plain annealed copper; solid IEC/EN 60228 Class 1 or stranded Class 2 |
Insulation | Mica glass fire-resistant tape + fire-resistant silicone rubber compound type EI2 |
Cabling | Cores cabled in concentric layers with suitable non-hygroscopic fillers |
Overall Screen | Aluminum/polyester tape with tinned copper drain wire |
Circuit Protective Conductor | Uninsulated tinned copper conductor, same section and class as insulated conductors in 2-, 3- and 4-core cables |
Drain Wire for >4 Cores | 0.5 mm² tinned copper conductor |
Outer Sheath | Thermoplastic LSZH LTS3; optional thermosetting LSZH SW2-SW4 |
Sheath Colour | Red or white; other colours on request |
Operating Temperature | -30°C to +90°C |
Installation Temperature | -20°C to +50°C |
Minimum Bending Radius | 7.5 × overall diameter |
PRODUCT APPLICATIONS
- Emergency voice communication systems referenced by BS 5839-9.
- Emergency communication control and interface circuits.
- Building life-safety communication routes requiring fire-resistant screened cable.
- Projects requiring LSZH materials and documented circuit-integrity performance.
| Cores | Cross Section mm² | Insulation mm | Sheath mm | Overall Diameter mm | Approx. Weight kg/km |
|---|---|---|---|---|---|
| 2 | 1.0 | 0.6 | 0.9 | 7.9 | 85 |
| 2 | 1.5 | 0.7 | 0.9 | 8.8 | 105 |
| 2 | 2.5 | 0.8 | 1.0 | 10.2 | 150 |
| 2 | 1.5 | 0.7 | 0.9 | 9.2 | 110 |
| 2 | 2.5 | 0.8 | 1.0 | 10.3 | 155 |
| 2 | 4.0 | 0.8 | 1.1 | 12.2 | 220 |
| 3 | 1.0 | 0.6 | 0.9 | 8.4 | 105 |
| 3 | 1.5 | 0.7 | 0.9 | 9.3 | 130 |
| 3 | 2.5 | 0.8 | 1.0 | 10.8 | 190 |
| 3 | 1.5 | 0.7 | 0.9 | 9.4 | 135 |
| 3 | 2.5 | 0.8 | 1.0 | 10.9 | 190 |
| 3 | 4.0 | 0.8 | 1.1 | 13.0 | 280 |
| 4 | 1.0 | 0.6 | 1.0 | 9.3 | 125 |
| 4 | 1.5 | 0.7 | 1.0 | 10.3 | 165 |
| 4 | 2.5 | 0.8 | 1.1 | 12.0 | 240 |
| 4 | 1.5 | 0.7 | 1.0 | 10.5 | 170 |
| 4 | 2.5 | 0.8 | 1.1 | 12.1 | 250 |
| 4 | 4.0 | 0.8 | 1.2 | 14.4 | 350 |
| 7 | 1.0 | 0.6 | 1.0 | 10.5 | 175 |
| 7 | 1.5 | 0.7 | 1.1 | 12.1 | 230 |
| 12 | 1.0 | 0.6 | 1.1 | 14.5 | 300 |
| 12 | 1.5 | 0.7 | 1.2 | 16.0 | 380 |
| 19 | 1.0 | 0.6 | 1.2 | 17.5 | 470 |
| 19 | 1.5 | 0.7 | 1.3 | 17.5 | 470 |
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From Production to Delivery
From raw material preparation to final shipmen, every stage is caretuly controled to ensure consistent conductor quality, reliable pertormance,and sae delivery. Our roduction,
inspection, packaging, and logistics processes are managed in accordance with applicable standards and project requirements.
Production
Plain annealed copper conductors are prepared as solid Class 1 or stranded Class 2 constructions, wrapped with mica-glass fire-resistant tape, insulated with fire-resistant silicone rubber, cabled with fillers, screened with aluminum/polyester tape and a tinned-copper drain wire, then finished with the specified LSZH sheath.
Inspection
Inspection focuses on fire-resistant insulation, overall screen continuity, drain/CPC arrangement, LSZH sheath integrity, electrical tests, dimensional checks and project-required fire-performance records.
Packaging
Finished cables are wound onto suitable drums according to ordered size and length. Cable ends are secured and protected, and drum identification can include cable code, core count, conductor size, length and project reference.
Shipping
Before shipment, cable drums and accompanying technical documents are checked against the order and packing list. Test records, product identification and project documentation can be prepared according to customer requirements.
Frequently Asked Questions
What system application is this page focused on?
Emergency voice communication systems referenced by BS 5839-9.
Is the cable screened?
Yes. It uses aluminum/polyester tape with a tinned-copper drain wire.
What fire-resistant insulation is used?
Mica-glass fire-resistant tape covered by fire-resistant silicone-rubber compound type EI2.
What is the minimum bending radius?
7.5 times the overall cable diameter.
What is the listed short-circuit temperature?
350°C.
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Contact Information
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