Technical Data - ABB Relion 670 Series Technical Reference Manual

1MRK 505 208-UEN B
17.2.19.3
Technical reference manual
IEC99001046 V1 EN
Figure 322: Antenna line-of-sight
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. REx670 must be switched off when the antenna cable is
connected.

Technical data

Table 468: GPS – Antenna and cable
Function
Max antenna cable attenuation
Antenna cable impedance
Lightning protection
Antenna cable connector
Section 17
IED hardware
A
99001046.vsd
Value
26 db @ 1.6 GHz
50 ohm
Must be provided externally
SMA in receiver end
TNC in antenna end
659