ABB REG650 - Page 34

Table 11. IRIG-B
Type Value Accuracy
Input impedance 430 Ohm -
Minimum input voltage HIGH 4.3 V -
Maximum input voltage LOW 0.8 V -
Table 12. EIA-485 interface
Type Value Conditions
Minimum differential driver output
voltage
1.5 V –
Maximum output current 60 mA -
Minimum differential receiver input
voltage
0.2 V -
Supported bit rates 300, 600, 1200, 2400, 4800, 9600,
19200, 38400, 57600, 115200
-
Maximum number of 650 IEDs
supported on the same bus
32 -
Max. cable length 925 m (3000 ft) Cable: AWG24 or better, stub lines shall be avoided
Table 13. Serial rear interface
Type
Counter connector
Serial port (X9) Optical serial port, type ST for IEC 60870-5-103 and DNP serial
Table 14. Optical serial port (X9)
Wave length
Fibre type Connector
Permitted path attenuation
1)
820 nm MM 62,5/125 µm glass fibre
core
ST 6.8 dB (approx. 1700m length with 4 db / km fibre attenuation)
820 nm MM 50/125 µm glass fibre
core
ST 2.4 dB (approx. 600m length with 4 db / km fibre attenuation)
1) Maximum allowed attenuation caused by fibre
Influencing factors
Ingress protection
Table 15. Ingress protection
Description Value
IED front IP 54
IED rear IP 20
IED sides IP 40
IED top IP 40
IED bottom IP 20
Generator protection REG650
1MRK 502 050-BEN B
Product version: 1.3
34 ABB