ABB RET670 Product Guide

Impedance protection
Table 27. Distance measuring zone, Quad ZMQPDIS
Function Range or value Accuracy
Number of zones Max 5 with selectable
direction
-
Minimum operate residual
current, zone 1
(5-1000)% of IBase -
Minimum operate current, phase-
to-phase and phase-to-earth
(10-1000)% of IBase -
Positive sequence reactance (0.10-3000.00) Ω/phase ±2.0% static accuracy
±2.0 degrees static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x U
r
Current range: (0.5-30) x I
r
Angle: at 0 degrees and 85 degrees
Positive sequence resistance (0.01-1000.00) Ω/phase
Zero sequence reactance (0.10-9000.00) Ω/phase
Zero sequence resistance (0.01-3000.00) Ω/phase
Fault resistance, phase-to-earth (0.10-9000.00) Ω/loop
Fault resistance, phase-to-phase (0.10-3000.00) Ω/loop
Dynamic overreach <5% at 85 degrees
measured with CVT’s and
0.5<SIR<30
-
Definite time delay Ph-Ph and Ph-
E operation
(0.000-60.000) s ±0.2% or ±40 ms whichever is greater
Operate time 25 ms typically IEC 60255-121
Reset ratio 105% typically -
Reset time at 0.1 x Zreach to 2 x
Zreach
Min. = 20 ms
Max. = 50 ms
-
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
56 ABB

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