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5.1 Twisted Bus System (When using twisted pair cable)
5.1.1 Specifications of twisted pair cable
The following shows the specifications of a shielded twisted pair cable used in
the twisted bus system.
Twisted pair cables that satisfy the following specifications can also be used
even not introduced.
Item
Cross section
Cable
Core
Conductor
resistance (20 )
Insulation resistance
(20 )
Dielectric withstand
voltage V-min
Capacitance
(1kHz)
Characteristic
impedance
(100kHz)
*1: Applicable only when the communication speed is 1.25Mbps or less.
KNPEV-SB 0.5SQ
Shielded twisted pair cable
2-core
39.4 /km or less
10M km or more
1000VAC 1 minute
70nF/km or less on average
110 10
9
1P*1
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