ABB RET670 Product Guide

Table 47. Sensitive directional residual overcurrent and power protection SDEPSDE
Function Range or value Accuracy
Operate level for 3I
0
·cosj
directional residual
overcurrent
(0.25-200.00)% of lBase
± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Operate level for ·3I
0
·3U
0
cosj
directional residual power
(0.25-200.00)% of SBase
± 1.0% of S
r
at S £ S
r
± 1.0% of S at S > S
r
Operate level for 3I
0
and j
residual overcurrent
(0.25-200.00)% of lBase
± 1.0% of I
r
at £ I
r
± 1.0% of I at I > I
r
Operate level for non-
directional overcurrent
(1.00-400.00)% of lBase
±1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Operate level for non-
directional residual
overvoltage
(1.00-200.00)% of UBase
± 0.5% of U
r
at U £ U
r
± 0.5% of U at U > U
r
Residual release current for all
directional modes
(0.25-200.00)% of lBase
± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Residual release voltage for all
directional modes
(1.00-300.00)% of UBase
± 0.5% of U
r
at U £ U
r
± 0.5% of U at U > U
r
Operate time for non-
directional residual
overcurrent at 0 to 2 x Iset
Min = 40 ms
Max = 65 ms
Reset time for non-directional
residual overcurrent at 2 to 0 x
Iset
Min = 40 ms
Max = 65 ms
Operate time for directional
residual overcurrent at 0 to 2 x
Iset
Min = 115 ms
Max = 165 ms
Reset time for directional
residual overcurrent at 2 to 0 x
Iset
Min = 25 ms
Max = 65 ms
Independent time delay for
non-directional residual
overvoltage at 0.8 to 1.2 x Uset
(0.000 – 60.000) sec ±0.2% or ± 80 ms whichever is greater
Independent time delay for
non-directional residual
overcurrent at 0 to 2 x Iset
(0.000 – 60.000) sec ±0.2% or ± 80 ms whichever is greater
Independent time delay for
directional residual
overcurrent at 0 to 2 x Iset
(0.000 – 60.000) sec ±0.2% or ± 180 ms whichever is
greater
Inverse characteristics 16 curve types See table 117, table 118 and table 119
Relay characteristic angle
RCA
(-179 to 180) degrees ± 2.0 degrees
Relay Open angle ROA (0 to 90) degrees ± 2.0 degrees
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
66 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