ABB RET670 Product Guide

Basic IED functions
Table 112. Self supervision with internal event list
Data Value
Recording manner Continuous, event controlled
List size 40 events, first in-first out
Table 113. Time synchronization, time tagging
Function Value
Time tagging resolution, events and sampled measurement values 1 ms
Time tagging error with synchronization once/min (minute pulse synchronization), events and sampled
measurement values
± 1.0 ms typically
Time tagging error with SNTP synchronization, sampled measurement values ± 1.0 ms typically
Table 114. GPS time synchronization module (GTM)
Function
Range or value Accuracy
Receiver – ±1µs relative UTC
Time to reliable time reference with antenna in new
position or after power loss longer than 1 month
<30 minutes –
Time to reliable time reference after a power loss longer
than 48 hours
<15 minutes –
Time to reliable time reference after a power loss shorter
than 48 hours
<5 minutes –
Table 115. 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
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
ABB 97

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