ABB RET670 - Two Step Undervoltage Protection UV2 PTUV

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