ABB RET670 Product Guide

Multipurpose protection
Table 66. General current and voltage protection CVGAPC
Function Range or value Accuracy
Measuring current input phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2, phase2-
phase3, phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Measuring voltage input phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2, phase2-
phase3, phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Start overcurrent, step 1 - 2 (2 - 5000)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Start undercurrent, step 1 - 2 (2 - 150)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Independent time delay, overcurrent at 0 to 2 x I
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Independent time delay, undercurrent at 2 to 0 x I
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Overcurrent (non-directional):
Start time at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
-
Start time at 0 to 10 x I
set
Min. = 5 ms
Max. = 20 ms
-
Reset time at 10 to 0 x I
set
Min. = 20 ms
Max. = 35 ms
-
Undercurrent:
Start time at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
-
Overcurrent:
Inverse time characteristics, see table 117, 118 and table "" 16 curve types See table 117, 118 and table ""
Overcurrent:
Minimum operate time for inverse curves, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Voltage level where voltage memory takes over (0.0 - 5.0)% of UBase ±0.5% of U
r
Start overvoltage, step 1 - 2 (2.0 - 200.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Start undervoltage, step 1 - 2 (2.0 - 150.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Independent time delay, overvoltage at 0.8 to 1.2 x U
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
ABB 77

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