ABB RET670 Product Guide

Voltage protection
Table 57. Two step undervoltage protection UV2PTUV
Function Range or value Accuracy
Operate voltage, low and high step (1.0–100.0)% of UBase ±0.5% of U
r
Absolute hysteresis (0.0–50.0)% of UBase ±0.5% of U
r
Internal blocking level, step 1 and step 2 (1–50)% of UBase ±0.5% of U
r
Inverse time characteristics for step 1 and step 2, see table 121 - See table 121
Definite time delay, step 1 at 1.2 to 0 x U
set
(0.00-6000.00) s ±0.2% or ±40ms whichever is
greater
Definite time delay, step 2 at 1.2 to 0 x U
set
(0.000-60.000) s ±0.2% or ±40ms whichever is
greater
Minimum operate time, inverse characteristics (0.000–60.000) s ±0.2% or ±40ms whichever is
greater
Operate time, start at 2 to 0 x U
set
Min= 15 ms
Max= 30 ms
-
Reset time, start at 0 to 2 x U
set
Min= 15 ms
Max= 30 ms
-
Operate time, start at 1.2 to 0 x U
set
Min= 5 ms
Max= 25 ms
-
Reset time, start at 0 to 1.2 x U
set
Min= 15 ms
Max= 35 ms
-
Critical impulse time 5 ms typically at 1.2 to 0 x U
set
-
Impulse margin time 15 ms typically -
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
72 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