Enclosure Class - ABB Relion Technical Manual

1MRK 502 048-UUS A
19.8
Technical manual
Table 562: IRIG-B
Type Value
Input impedance 430 Ohm
Minimum input voltage 4.3 V
HIGH
Maximum input voltage 0.8 V
LOW
Table 563: EIA-485 interface
Type Value
Minimum differential 1.5 V
driver output voltage
Maximum output current 60 mA
Minimum differential 0.2 V
receiver input voltage
Supported bit rates 300, 600, 1200, 2400,
4800, 9600, 19200,
38400, 57600, 115200
Maximum number of 650 32
IEDs supported on the
same bus
Max. cable length 925 m (3000 ft)
Table 564: Serial rear interface
Type
Serial port (X9)
Table 565: Optical serial port (X9)
Wave length Fibre type
820 nm MM 62,5/125 µm
glass fibre core
820 nm MM 50/125 µm
glass fibre core
1) Maximum allowed attenuation caused by fibre

Enclosure class

Accuracy
-
-
-
Conditions
–
-
-
-
-
Cable: AWG24 or better, stub lines shall be avoided
Counter connector
Optical serial port, type ST for IEC 60870-5-103 and
DNP serial
Connector
Permitted path attenuation
ST 6.8 dB (approx. 1700m length with 4 db /
km fibre attenuation)
ST 2.4 dB (approx. 600m length with 4 db / km
fibre attenuation)
Section 19
Technical data
1)
727