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Details
LMR® - LLPL is an indoor highly fire retardant cable intended specifically for runs within return air handling plenums (e.g. dropped ceilings, raised floors). It has a UL/NEC & CSA rating of ‘CMP’ and ‘FT6’ respectively.
• Flexibilityand bendability are hallmarks of the LMR- 240-LLPL cable design. The flexible outer conductor enables the tightest bend radius available for any cable of similar size and performance.
• Low Lossis another hallmark feature of LMR-240- LLPL. Size for size LMR has the lowest loss of any flexible cable and comparable loss to semirigid hard-line cables. • RF Shielding is 50 dB greater than typical single shielded coax (40 dB). The multi-ply bonded foil outer conductor is rated conservatively at > 90 dB (i.e. >180 dB between two adjacent cables)
.• Weatherability: LMR-240-LLPL cables are designed for indoor Plenum applications. Black jacketed LMRLLPL versions can be supplied for applications that originate outdoors (e.g., rooftop) and subsequently enter the building
.• Connectors: A variety of connectors are available for LMR-240-LLPL cable, including the most common interface types. Most employ crimp outer attachment using standard hex crimp sizes.
• Cable Assemblies: All LMR-240-LLPL cable types are available as pre-terminated cable assemblies. Refer to the section on FlexTech for further details.
Construction Specifications | |||
Description | Material | In. | (mm) |
Inner Conductor | Solid BC | 0.056 | (1.42) |
Dielectric | Low density PTFE | 0.150 | (3.81) |
Outer Conductor | Aluminum Tape | 0.155 | (3.94) |
Overall Braid | Tinned Copper | 0.178 | (4.52) |
Electrical Specifications | |||
Performance Property | Units | US | (metric) |
Velocity of Propagation | % | 75 | |
Dielectric Constant | NA | 1.76 | |
Time Delay | nS/ft (nS/m) | 1.34 | (4.40) |
Impedance | ohms | 50 | |
Capacitance | pF/ft (pF/m) | 26.7 | (87.6) |
Inductance | uH/ft (uH/m) | 0.067 | (0.22) |
Shielding Effectiveness | dB | >90 | |
DC Resistance | |||
Inner Conductor | ohms/1000ft (/km) | 4.0 | (13.1) |
Outer Conductor | ohms/1000ft (/km) | 3.9 | (12.8) |
Voltage Withstand | Volts DC | 1500 | |
Jacket Spark | Volts RMS | 5000 | |
Peak Power | kW | 5.6 |
Mechanical Specifications | |||
Performance Property | Units | US | (metric) |
Bend Radius: installation | in. (mm) | 0.75 | (19.1) |
Bend Radius: repeated | in. (mm) | 2.5 | (63.5) |
Bending Moment | ft-lb (N-m) | 0.25 | (0.34) |
Weight | lb/ft (kg/m) | 0.047 | (0.07) |
Tensile Strength | lb (kg) | 60 | (27.22) |
Flat Plate Crush | lb/in. (kg/mm) | 85 | (1.52) |
Frequency (MHz) |
30 |
50 |
150 |
220 |
450 |
900 |
1500 |
1800 |
2000 |
2500 |
5800 |
Attenuation dB/100 ft | 1.4 | 1.8 | 3.1 | 3.7 | 5.4 | 7.6 | 9.9 | 10.9 | 11.5 | 12.9 | 20.0 |
Attenuation dB/100 m | 4.5 | 5.8 | 10.1 | 12.2 | 17.6 | 25 | 32.5 | 35.7 | 37.7 | 49.6 | 65.6 |
Avg. Power kW | 1.18 | 0.91 | 0.52 | 0.43 | 0.30 | 0.21 | 0.16 | 0.15 | 0.14 | 0.12 | 0.08 |