ABB RET670 Product Guide

Table 34. Phase selection with load encroachment, quadrilateral characteristic FRPSPDIS
Function Range or value Accuracy
Minimum operate current (5-500)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Reactive reach, positive
sequence
(0.50–3000.00) 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
Resistive reach, positive
sequence
(0.10–1000.00) Ω/phase
Reactive reach, zero sequence (0.50–9000.00) Ω/phase
Resistive reach, zero sequence (0.50–3000.00) Ω/phase
Fault resistance, Ph-E faults,
forward and reverse
(1.00–9000.00) Ω/loop
Fault resistance, Ph-Ph faults,
forward and reverse
(0.50–3000.00) Ω/loop
Load encroachment criteria:
Load resistance, forward and
reverse
Safety load impedance angle
(1.00–3000.00) Ω/phase
(5-70) degrees
Reset ratio 105% typically -
Table 35. Fast distance protection ZMFPDIS, ZMFCPDIS
Function
Range or value Accuracy
Number of zones 3 selectable directions,
3 fixed directions
-
Minimum operate current, Ph-Ph
and Ph-E
(5-6000)% of IBase ±1.0% of I
r
Positive sequence reactance
reach, Ph-E and Ph-Ph loop
(0.01 - 3000.00) ohm/
phase
±2.0% of static accuracy
±2.0 deg static angular accuracy
Conditions:
Voltage range: (0.1-1.1) x U
r
Current range: (0.5-30) x I
r
Angle: At 0 deg and 85 deg
Positive sequence resistance
reach, Ph-E and Ph-Ph loop
(0.00 - 1000.00) ohm/
phase
Zero sequence reactance reach (0.01 - 9000.00) ohm/p
Zero sequence resistive reach (0.00 - 3000.00) ohm/p
Fault resistance reach, Ph-E and
Ph-Ph
(0.01 -9000.00) ohm/l
Dynamic overreach < 5% at 85 deg
measured with CVTs
and 0.5 < SIR < 30
Definite time delay to trip, Ph-E
and Ph-Ph operation
(0.000-60.000) s ±2.0% or ±35 ms whichever is greater
Operate time 16 ms typically IEC 60255-121
Reset time at 0.1 to 2 x Zreach Min = 20 ms
Max = 35 ms
-
Reset ratio 105% typically -
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
60 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