ABB RET670 - Installing the Serial Communication Cable for RS485 SPA;IEC

en03000110.vsd
1
2
IEC03000110 V1 EN
Figure 38: Cable contact, Phoenix: MSTB2.5/6-ST-5.08 1757051
Where:
1 is cable
2 is screw
Conductor
P
air Shield
Pair separator
Jacket
S
eparator
Overall shield
Drain wire
e
n07000139.vsd
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 SPA/IEC".
5.6.2 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
Section 5 1MRK 504 088-UEN C
Installing the IED
68
Installation and commissioning manual