Installing The Serial Communication Cable For Rs485 Spa/Iec - ABB RET670 Installation And Commissioning Manual

Section 5
Installing the IED
5.6.2
68
1
IEC03000110 V1 EN
Figure 38: Cable contact, Phoenix: MSTB2.5/6-ST-5.08 1757051
Where:
1 is cable
2 is screw
Pair separator
Drain wire
Jacket
IEC07000139 V1 EN
Figure 39: Cross section of communication cable
The EIA standard RS-485 specifies the RS485 network. An informative excerpt is
given in section "Installing the serial communication cable for RS485

Installing the serial communication cable for RS485 SPA/IEC

Informative excerpt from EIA Standard RS-485 - Electrical Characteristics of
Generators and Receivers for Balanced Digital Multipoint Systems
RS-485 Wire - Media dependent Physical layer
2
en03000110.vsd
Pair Shield
Conductor
Overall shield
Separator
en07000139.vsd
Installation and commissioning manual
1MRK 504 088-UEN C
SPA/IEC".