Frequency protection
Table 46. Underfrequency protection SAPTUF
Function
Range or value
Accuracy
Operate value, start function
(35.00-75.00) Hz
± 2.0 mHz
Operate time, start function
100 ms typically
-
Reset time, start function
100 ms typically
-
Operate time, definite time function
(0.000-60.000)s
± 0.5% ± 10 ms
Reset time, definite time function
(0.000-60.000)s
± 0.5% ± 10 ms
Voltage dependent time delay
(
)
Exponent
U UMin
t
tMax tMin
tMin
UNom UMin
-
=
×
-
+
-
é
ù
ê
ú
ë
û
EQUATION1182 V1 EN
(Equation 3)
U=U
measured
Settings:
UNom=(50-150)% of U
base
UMin=(50-150)% of U
base
Exponent=0.0-5.0
tMax=(0.000-60.000)s
tMin=(0.000-60.000)s
5% + 200 ms
Table 47. Overfrequency protection SAPTOF
Function
Range or value
Accuracy
Operate value, start function
(35.00-75.00) Hz
± 2.0 mHz at
symmetrical three-
phase voltage
Operate time, start function
100 ms typically at f
set
-0.5 Hz to f
set
+0.5 Hz
-
Reset time, start function
100 ms typically
-
Operate time, definite time function
(0.000-60.000)s
± 0.5% ± 10 ms
Reset time, definite time function
(0.000-60.000)s
± 0.5% ± 10 ms
Table 48. Rate-of-change frequency protection SAPFRC
Function
Range or value
Accuracy
Operate value, start function
(-10.00-10.00) Hz/s
± 10.0 mHz/s
Operate value, internal blocking level
(0-100)% of UBase
± 0.5% of U
r
Operate time, start function
100 ms typically
-
Bay control REC670
1MRK511232-BEN E
Pre-configured
Product version: 1.2
48
ABB
Содержание Relion 670 series REC670
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