ABB Relion REG670, Technical Manual

Page: 1204 / 1298

21.2.18.3 Technical data
Table 928: GPS – Antenna and cable
Function Value
Max antenna cable attenuation 26 db @ 1.6 GHz
Antenna cable impedance 50 ohm
Lightning protection Must be provided externally
Antenna cable connector SMA in receiver end
TNC in antenna end
Accuracy +/-1μs
21.2.19 IRIG-B time synchronization module IRIG-B
21.2.19.1 Introduction
The IRIG-B time synchronizing module is used for accurate time synchronizing of the
IED from a station clock.
The Pulse Per Second (PPS) input shall be used for synchronizing when IEC
61850-9-2LE is used.
Electrical (BNC) and optical connection (ST) for 0XX and 12X IRIG-B support.
21.2.19.2 Design
The IRIG-B module has two inputs. One input is for the IRIG-B that can handle both
a pulse-width modulated signal (also called unmodulated) and an amplitude
modulated signal (also called sine wave modulated). The other is an optical input type
ST for optical pulse-width modulated signal (IRIG-B 00X).
Section 21
1MRK502052-UEN B
IED hardware
1198
Technical manual