Voltage protection
Table 64. 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
-
See table
Definite time delay, step 1 at 1.2 x U
set
to 0 (0.00-6000.00) s
±0.2% or ±40ms whichever is greater
Definite time delay, step 2 at 1.2 x U
set
to 0 (0.000-60.000) s
±0.2% or ±40ms whichever is greater
Minimum operate time, inverse
characteristics
(0.000–60.000) s
±0.5% or ±40ms whichever is greater
Operate time, start at 2 x U
set
to 0
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 x U
set
to 0
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 x U
set
to 0
-
Impulse margin time
15 ms typically
-
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
ABB
83
