ABB Relion RES670 Product Manual page 52

Phasor measurement unit RES670 2.1 IEC
Voltage protection
Table 33. Two step undervoltage protection UV2PTUV
Function
Operate voltage, low and high step
Absolute hysteresis
Internal blocking level, step 1 and step 2
Inverse time characteristics for step 1 and step 2, see
table 115
Definite time delay, step 1 at 1.2 to 0 x U
Definite time delay, step 2 at 1.2 to 0 x U
Minimum operate time, inverse characteristics
Operate time, start at 2 to 0 x U
Reset time, start at 0 to 2 x U
Operate time, start at 1.2 to 0 x U
Reset time, start at 0 to 1.2 x U
Critical impulse time
Impulse margin time
52
set
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M13290-1 v14
Range or value
UBase
(1.0–100.0)% of
UBase
(0.0–50.0)% of
UBase
(1–50)% of
-
(0.00-6000.00) s
(0.000-60.000) s
(0.000–60.000) s
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
Min. = 5 ms
Max. = 25 ms
Min. = 15 ms
Max. = 35 ms
5 ms typically at 1.2 to 0 x U
15 ms typically
1MRK 511 367-BEN D
Accuracy
±0.5% of U
r
±0.5% of U
r
±0.5% of U
r
See table 115
±0.2% or ±40ms whichever is
greater
±0.2% or ±40ms whichever is
greater
±0.5% or ±40ms whichever is
greater
-
-
-
-
-
set
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ABB