Wiring specifications for many public buildings now call for LFH cables to be used in certain areas, notably in corridors, risers etc. Under combustion circumstances, LFH cables have a significantly reduced smoke emission, and the gaseous products contain no toxic halogens.
CAT5E-LFH is technically identical to standard CAT5E, except that PVC jackets are replaced by LFH materials. Both F/UTP (overall foil screened) and U/UTP (unscreened) versions are available.
F/UTP Foil screened twisted pair
Technical Specification:
| Conductors: |
1/0.51mm (24 AWG) plain copper |
| Insulation: |
Solid polyethylene |
| Lay-up: |
Two insulated conductors twisted together, pairs twisted together, according to Category Cable Colour Codes. |
| Screen: |
aluminium/polyester tape (aluminium side in) |
| Drain wire: |
1/0.4mm tinned copper wire, laid up with cores |
| Overall jacket: |
LFH material, grey, O.D. 6.0mm |
| Minimum bending radius: |
60mm |
| Impedance: |
100 ± 15 ohms |
| Conductor resistance: |
9.4 ohms/100m |
| Velocity ratio: |
76% |
| Attenuation: |
1.9dB/100m (1MHz) |
|
6.0dB/100m (10MHz) |
|
19.8dB/100m (100MHz) |
| Near end crosstalk: |
71dB (1MHz) |
|
56dB (10MHz) |
|
41dB (100MHz) |
| Weight: |
4.0kg/100m |
| Reel length: |
Box-paks of 305 metres |
U/UTP Unscreened twisted pair
As F/UTP, but without foil screen and no drainwire.
Technical Specification:
| Conductors: |
1/0.51mm (24 AWG) plain copper |
| Insulation: |
Solid polyethylene |
| Lay-up: |
Two insulated conductors twisted together, pairs twisted together, according to Category Cable Colour Codes. |
| Screen: |
None |
| Drain wire: |
None |
| Overall jacket: |
LFH material, grey, OD 5.5mm |
| Minimum bending radius: |
60mm |
| Impedance: |
100 ± 15 ohms |
| Conductor resistance: |
9.4 ohms/100m |
| Velocity ratio: |
76% |
| Attenuation: |
1.9dB/100m (1MHz) |
|
6.0dB/100m (10MHz) |
|
19.8dB/100m (100MHz) |
| Near end crosstalk: |
71dB (1MHz) |
|
56dB (10MHz) |
|
41dB (100MHz) |
| Weight: |
3.4kg/100m |
| Reel length: |
Box-paks of 305 metres |
Socket suggestions for both
| 49-4411 |
MATRIX CAT5E RJ45 CONNECTOR MODULE |
| 49-4445 |
CANFORD AV MODULE Economy RJ45 CAT5E connector half-module white |
| 44-9221 |
TUK PANEL MOUNT KEYSTONE RJ45 IDC SOCKET Cat5E tool less black |
| 46-513 |
NEUTRIK NE8FAV-YK ETHERCON Panel mounting Krone IDC termination |
Plug suggestions for 31-944
| 46-658 |
BEL STEWART SS-39200-030 RJ45 Cat6A FTP shielded pack of 5 |
| 46-608 |
RJ45 PLUG 8P8CS Cat6/Cat6A shielded |
Plug suggestions for 31-945
| 46-592 |
BTX CD-EZRJ456 RJ45 Cat6 plug pack of 100 |
| 46-593 |
BTX CD-EZRJ456S RJ45 Cat5E/Cat6 shielded plug pack of 25 |
Manufactured by Draka Prysmium Multimedia.
'LFH' is a registered trademark of Canford Audio Limited.