BS 7629-1 SR Insulated Fire Resistant Control Cable 300/500V
BS 7629-1 SR Insulated Fire Resistant Control Cable is a 300/500V copper control cable designed for emergency services and fire-circuit control. It uses solid Class 1 plain annealed copper conductors, fire-resistant silicone-rubber insulation and a low-smoke zero-halogen outer sheath, with 2-, 3- and 4-core constructions available.
PRODUCT OVERVIEW
The cable is basically designed to BS 7629-1 for fixed fire-resistant control circuits. Plain annealed copper conductors are solid to IEC/EN 60228 Class 1 and insulated with fire-resistant silicone-rubber compound type EI2. The insulated cores are cabled together in concentric layers with suitable non-hygroscopic fillers and finished with a thermoplastic LSZH outer sheath type LTS3; a thermosetting LSZH compound type SW2-SW4 can also be offered.
The listed range covers 2-, 3- and 4-core designs in 1.5 mm² and 2.5 mm² conductor sizes, including versions with and without an earth conductor. The product is intended for emergency-service and fire-circuit control applications where circuit integrity, low smoke, halogen-free materials and defined fire-performance characteristics are required.
KEY FEATURES
- Basic design to BS 7629-1.
- 300/500V rated voltage.
- Plain annealed copper conductor, solid IEC/EN 60228 Class 1.
- Fire-resistant silicone-rubber insulation type EI2.
- Thermoplastic LSZH outer sheath type LTS3; thermosetting SW2-SW4 can be offered.
- 2-, 3- and 4-core constructions.
- Available conductor sizes: 1.5 mm² and 2.5 mm².
- Operating temperature: -30°C to +90°C.
- Installation temperature: -20°C to +50°C.
- Minimum bending radius: 6 × overall diameter.
STANDARD & FIRE PERFORMANCE
BS 7629-1 is the basic design standard for this cable. The fire-performance references below describe the circuit-integrity, mechanical-shock, water-spray, flame-spread, halogen and smoke characteristics listed for the product.
Performance | Referenced Test / Standard |
Circuit integrity | IEC 60331-21; BS 6387 CWZ; DIN VDE 0472-814 (FE180); BS 8434-1 (30 min); BS 5839-1 Clause 26 2d; CEI 20-36/2-1; SS229-1; NBN C 30-004 (F3); NF C32-070-2.3 (CR1) |
Circuit integrity with mechanical shock | EN 50200 (PH60); CEI 20-36/4-0 |
Circuit integrity with mechanical shock & water spray | EN 50200 Annex E |
System circuit integrity | DIN 4102-12, E30 depending on lay system |
Flame retardance – single vertical wire | EN/IEC/BS EN 60332-1-2 and listed equivalents |
Reduced fire propagation – bundled cables | EN/IEC/BS EN 60332-3-24 (Cat. C) and listed equivalents |
Halogen free | IEC 60754-1 and listed equivalents |
No corrosive gas emission | IEC 60754-2 and listed equivalents |
Minimum smoke emission | IEC 61034-1&2 and listed equivalents |
No toxic gases | NES 02-713; NF C 20-454 |
CABLE CONSTRUCTION
Voltage Rating | 300/500V |
Conductor | Plain annealed copper, solid IEC/EN 60228 Class 1 |
Insulation | Fire-resistant silicone-rubber compound type EI2 |
Cabling | Cores cabled together in concentric layers with suitable non-hygroscopic fillers |
Outer Sheath | Thermoplastic LSZH LTS3; optional thermosetting LSZH SW2-SW4 |
Sheath Colour | Orange; other colours on request |
PRODUCT APPLICATIONS
- Emergency-service control circuits.
- Fire-circuit control systems.
- Life-safety control circuits requiring fire-resistant silicone-rubber insulation.
- Building and infrastructure control circuits requiring LSZH cable.
- Fixed installations requiring 2-, 3- or 4-core fire-resistant control cable.
| No. of Cores × Cross Section | Insulation mm | Sheath mm | Overall Diameter mm | Approx. Weight kg/km |
|---|---|---|---|---|
| 2x1.5 | 0.7 | 0.9 | 7.4 | 70 |
| 2x2.5 | 0.8 | 1.0 | 8.8 | 105 |
| 3x1.5 | 0.7 | 0.9 | 7.9 | 93 |
| 3x2.5 | 0.8 | 1.0 | 9.4 | 141 |
| 4x1.5 | 0.7 | 1.0 | 8.8 | 122 |
| 4x2.5 | 0.8 | 1.1 | 10.4 | 183 |
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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
Solid Class 1 plain annealed copper conductors are insulated with fire-resistant silicone rubber, cabled with suitable fillers and finished with the specified LSZH outer sheath.
Inspection
Inspection focuses on conductor construction, silicone-rubber insulation, core identification, sheath integrity, dielectric test, insulation resistance, overall dimensions and required fire-performance documentation.
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 type, conductor size, core count, 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 is the rated voltage?
300/500V.
What conductor class is used?
Solid IEC/EN 60228 Class 1 copper conductors.
What insulation is used?
Fire-resistant silicone-rubber compound type EI2.
Is the cable screened?
No. This product is an unscreened SR insulated fire-resistant control cable.
What core counts are available?
2, 3 and 4 cores.
What is the minimum bending radius?
6 times the overall cable diameter.
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Contact Information
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