ABB RET670 Installation And Commissioning Manual

A
99001046.vsd
IEC99001046 V1 EN
Figure 41: Antenna line-of-sight
5.7.2 Electrical installation
Use a 50 ohm coaxial cable with a male TNC connector on the antenna end and a
male SMA connector on the receiver end to connect the antenna to the IED.
Choose cable type and length so that the total attenuation is max. 26 dB at 1.6
GHz. A suitable antenna cable is supplied with the antenna.
The antenna has a female TNC connector to the antenna cable. For location of GPS
module, refer to section
"Rear side connectors". Connection diagram for GPS
module is shown in figure 24.
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, then connect 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.
5.7.3 Lightning protection
The antenna should be mounted with adequate lightning protection, that is the
antenna mast must not rise above a neighboring lightning conductor.
Section 5 1MRK 504 088-UEN C
Installing the IED
72
Installation and commissioning manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24