simco - سیمکــو - توليد كننده سيم و...
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Page: 1 / 8 www.SimcoCable.com
SIMCO
LAN
Cat 6Cat 7a
2000 MHz
Page: 2 / 8 www.SimcoCable.com
SIMCO
UTP
𝑍0 =
276
ε ∗ 𝑙𝑜𝑔
2s
d
Z0 = 276
ε ∗ log
2s
d 1 +
S
2h
2
12
εdsh
UTPCat 6aCat 7
Cat 7a
Page: 3 / 8 www.SimcoCable.com
SIMCO
NEXTFEXT
α
α = 𝐴 1
𝑑 ∗ 𝑙𝑜𝑔 2𝑠𝑑 𝑓 휀 + 𝐵𝑓 𝑡𝑎𝑛 𝛿 휀
A , Bfεd s
dB
Page: 4 / 8 www.SimcoCable.com
SIMCO
Page: 5 / 8 www.SimcoCable.com
SIMCO
PEPP
PEHDPE
LDPEHDPE
Shore D
PPPP
UTP
Page: 6 / 8 www.SimcoCable.com
SIMCO
PP
UTP
UTPPP
PPHDPE
PP HDPE
Kg/m3 912 945
MFR2 ( 230°C ) g/10min 3.0 -
MFR2 ( 190°C ) g/10min - 0.7
At 1 MHz 2.26 2.32
Shore D 70 58
Mpa 56 35
% 780 700
Page: 7 / 8 www.SimcoCable.com
SIMCO
PPHDPE
PPHDPE
Francis ShawDavis Standard
L/D40 bhp29.8 kW
100 rpmHDPE54 rpm
PPPP100 rpm
PPHDPE
81 rpm
PP
°Cmmbar
m/minrpm
HDPE220-240-230-210 25 / 0.95 460 1025 54
PP 170-190-200-170 25 / 0.95 490 1000 100
PP 220-240-230-210 25 / 0.95 409 1016 81
PP 220-240-230-210 30 / 1.00 266 1006 51
HDPEUTPHDPE
PPUTP
HDPE
Cat 7Cat 7a
Cat 8
Page: 8 / 8 www.SimcoCable.com
SIMCO
[1] . Return Loss
[2] . Internal Crosstalk
[3] . Alien Crosstalk
[1] . A. Watson, W. Fajardo, “Tape forming for shielding cable cores”, Wire & Cable Technology
international, Vol XLII, No. 3, June 2014