Technical Data - ABB RES670 Technical Manual

Section 23
IED hardware
23.2.15.3
23.2.16
23.2.16.1
23.2.16.2
850
Antenna cable
Use a 50 ohm coaxial cable with a male TNC connector in the antenna end and a male
SMA connector in the receiver end to connect the antenna to GTM. Choose cable type
and length so that the total attenuation is max. 26 dB at 1.6 GHz.
Make sure that the antenna cable is not charged when connected to the
antenna or to the receiver. Short-circuit the end of the antenna cable
with some metal device, when first connected to the antenna. When the
antenna is connected to the cable, connect the cable to the receiver. The
IED must be switched off when the antenna cable is connected.

Technical data

Table 670: GPS – Antenna and cable
Function
Max antenna cable attenuation
Antenna cable impedance
Lightning protection
Antenna cable connector
Accuracy
IRIG-B time synchronization module IRIG-B
Introduction
The IRIG-B time synchronizing module is used for accurate time synchronizing of the
IED from a station clock.
The precision time protocol (PTP, IEC/IEEE 61850-9-3) input shall be used for
synchronizing when IEC/UCA 61850-9-2LE is used.
Electrical (BNC) and optical connection (ST) for 0XX and 12X IRIG-B support.
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
1MRK 511 408-UUS A
Value
26 db @ 1.6 GHz
50 ohm
Must be provided externally
SMA in receiver end
TNC in antenna end
+/-1μs
Phasor measurement unit RES670 2.2 ANSI
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