ABB RES670 Product Manual page 37

Phasor measurement unit RES670 ANSI
Customized
Product version: 1.2
Frequency protection
Table 29. Underfrequency protection SAPTUF (81)
Function
Operate value, pickup function
Operate time, pickup function
Reset time, pickup function
Operate time, definite time function
Reset time, definite time function
Voltage dependent time delay
EQUATION1559 V1 EN
V=V
measured
Table 30. Overfrequency protection SAPTOF (81)
Function
Operate value, pickup function
Operate time, pickup function
Reset time, pickup function
Operate time, definite time function
Reset time, definite time function
ABB
Range or value
(35.00-75.00) Hz
100 ms typically
100 ms typically
(0.000-60.000)s
(0.000-60.000)s
Settings:
VNom=(50-150)% of V
VMin=(50-150)% of V
Exponent=0.0-5.0
t_MaxTripDelay=(0.000-60.000)
s
t_MinTripDelay=(0.000-60.000)
s
(Equation 2)
Accuracy
± 2.0 mHz
-
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
5% + 200 ms
base
base
Range or value
(35.00-75.00) Hz
100 ms typically at f -0.5 Hz to f
set
100 ms typically
(0.000-60.000)s
(0.000-60.000)s
1MRK511254-BUS B
Accuracy
± 2.0 mHz at
symmetrical three-
phase voltage
+0.5 Hz -
set
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
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