LSIS XBL-EIMT, Руководство пользователя, Страница: 27 / 164

Chapter 2 Product Specifications
2-10
(2) Classification based on frequency used
Classification
Frequency used
(MHz)
Transmission
Speed (Mbps)
Purpose
Category 1 Phonetic Frequency 1 Phone network (2-Pair)
Category 2 4 4 Multi-Pair communication cable
Category 3 16 16 Phone n Computer network
Category 4 20 20
1) Computer network transmission speed
Up
2) Low-loss communication cable
Category 5 and
Enhanced
Category 5
100 100
1) Digital Phone n
Computer network
2) Low-loss, broadband cable
Notes
1) Presently classified items are Category 3, 5, En-Cat.5 and Cat.6 inside and outside of the
country, where Category 4 has been replaced by Category 5 and Category 7 is being under
development all over the world as STP structure.
(3) Classification based on fire (UL standard)
Classifi
cation
Heat Time
Length
of fire
Smoke
suppression
Reference
CMP 88(kW) 20 min
73m
or less
Restriction
• For ceiling without duct
• High voltage (Plenum) cable
• UL 910 (Plenum test)
CMR 150(kW) 30 min
3.6m
or less
Non-
Restriction
• Vertical installation
• Non high voltage (Non-Plenum) cable
• UL 1666(Riser test)
CM 21(kW) 20 min
2.4m
or less
Non-
Restriction
• Standard type
• Non high voltage (Non-Plenum) cable
• UL 1581(VTFT test)
CMX 1(kW) 1 min
0.5m
or less
Non-
Restriction
• Restriction use
• Non high voltage (Non-Plenum) cable
• UL 1581 (VW-1 test)
Notes
1) Though there is CMG between CM and CMR level, that is not applied to LAN cable such as UTP cable
Ex) CMG: it is CAS FT4 (VTFT test) and similar with CM
→
Sample condition (1/2 interval array -> 6 bundles x 6) is different with that of Burner angle
(horizontal
→
45degrees upward)