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RAMCRO R1721-BMS-HFFR-BC-Screeed Cable
RAMCRO BMS-HFFR-BC Screened Cable is a high-performance flame-retardant multicore cable designed for Building Management Systems (BMS) and other critical low-voltage applications. Featuring polypropylene (PO) insulation, collective screening, and a Low Smoke Zero Halogen (LSZH/FRNC) sheath, it provides superior signal integrity, fire safety, and reliable performance. Ideal for BMS, security systems, sound and audio, safety systems, control, and instrumentation installations in commercial and industrial environments.
| Specification | Details |
|---|---|
| Product Name | RAMCRO R1721 Audio Control & Instrumentation Cable |
| Cable Type | BMS-HFFR-BC Screened Cable |
| Formation | 2 Cores |
| Conductor Cross Section | 18 AWG |
| Conductor Material | Plain Annealed Copper Wire, 7 Strand |
| Conductor Diameter | 1.1 mm |
| Insulation Material | Polyolefin |
| Insulation Diameter | 1.5 mm |
| Core Colour Code | Black, Red |
| Individual Screen | N.A. |
| Wrapping | Minimum 1 Layer of 0.023 mm Plastic Tape |
| Collective Screen | 0.026 mm Aluminium/PETP Tape with Tinned Copper Drain Wire |
| Inner Sheath | N.A. |
| Armour | N.A. |
| Outer Sheath | Thermoplastic Low Smoke Halogen Free (LSZH/FRNC), Purple RAL 4005 |
| Overall Cable Diameter | 4 mm |
| Operating Voltage | 300 V |
| DC Resistance @ 20°C | Max. 22.9 Ω/km |
| Insulation Resistance @ 20°C | Min. 25 MΩ·km |
| Nominal Mutual Capacitance | Max. 150 pF/m |
| Inductance | Max. 1 mH/km |
| Core/Core Test Voltage | 2000 V |
| Core/Screen Test Voltage | 2000 V |
| Operating Temperature | -30°C to +80°C |
| Installation Temperature | -30°C to +80°C |
| Minimum Bending Radius | 8 × Cable Diameter |
| Maximum Pulling Tension | 78 N/mm² |
| Approximate Weight | 29 kg/km |
| Standard Cable Length | 305 m |
| Fire Propagation (Single Cable) | IEC 60332-1 |
| Fire Propagation (Bunched Cables) | IEC 60332-3 |
| Smoke Density | IEC 61034 |
| Halogen Acid Gas Emission | Zero |
| Acidity (pH) & Conductivity | IEC 60754-2 |
| Sunlight Resistance | UL 1581 Section 1200 |
| Low Voltage Directive | 2014/35/UE |
| Cable Printing | RAMCRO ITALY R1721 AUDIO CONTROL & INSTRUMENTATION CABLE 2C 18AWG SCREENED LSZH (FRNC) 300V 75°C IEC 60332-1 / UL 1581 – SAS0205HXEDH-RB – PROD.WEEK/18 + BATCH + METER MARKING |
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