ABB RET670 Product Guide

Table 58. Two step overvoltage protection OV2PTOV
Function Range or value Accuracy
Operate voltage, step 1 and 2 (1.0-200.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Absolute hysteresis (0.0–50.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Inverse time characteristics for steps 1 and 2, see table 120 - See table 120
Definite time delay, low step (step 1) at 0 to 1.2 x U
set
(0.00 - 6000.00) s ±0.2% or ±45 ms whichever is greater
Definite time delay, high step (step 2) at 0 to 1.2 x U
set
(0.000-60.000) s ±0.2% or ±45 ms whichever is greater
Minimum operate time, Inverse characteristics (0.000-60.000) s ±0.2% or ±45 ms whichever is greater
Operate time, start at 0 to 2 x U
set
Min. = 15 ms
Max. = 30 ms
-
Reset time, start at 2 to 0 x U
set
Min. = 15 ms
Max. = 30 ms
-
Operate time, start at 0 to 1.2 x U
set
Min. = 20 ms
Max. = 35 ms
-
Reset time, start at 1.2 to 0 x U
set
Min. = 5 ms
Max. = 25 ms
-
Critical impulse time 10 ms typically at 0 to 2 x U
set
-
Impulse margin time 15 ms typically -
Table 59. Two step residual overvoltage protection ROV2PTOV
Function
Range or value Accuracy
Operate voltage, step 1 and step 2 (1.0-200.0)% of UBase ± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Absolute hysteresis (0.0–50.0)% of UBase ± 0.5% of U
r
at U ≤ U
r
± 0.5% of U at U > U
r
Inverse time characteristics for low and high step, see table 122 - See table 122
Definite time delay low step (step 1) at 0 to 1.2 x U
set
(0.00–6000.00) s ± 0.2% or ± 45 ms whichever is
greater
Definite time delay high step (step 2) at 0 to 1.2 x U
set
(0.000–60.000) s ± 0.2% or ± 45 ms whichever is
greater
Minimum operate time (0.000-60.000) s ± 0.2% or ± 45 ms whichever is
greater
Operate time, start at 0 to 2 x U
set
Min. = 15 ms
Max. = 30 ms
-
Reset time, start at 2 to 0 x U
set
Min. = 15 ms
Max. = 30 ms
-
Operate time, start at 0 to 1.2 x U
set
Min. = 20 ms
Max. = 35 ms
-
Reset time, start at 1.2 to 0 x U
set
Min. = 5 ms
Max. = 25 ms
-
Critical impulse time 10 ms typically at 0 to 2 x U
set
-
Impulse margin time 15 ms typically -
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
ABB 73

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