ABB Relion 650 Series Product Manual page 43

Transformer protection RET650
Version 1.1 ANSI
Frequency protection
Table 37. Under frequency protection SAPTUF (81)
Function
Operate value, pickup function
Operate value, restore frequency
Operate time, pickup function
Reset time, pickup function
Operate time delay
Restore time delay
Table 38. Overfrequency protection SAPTOF (81)
Function
Operate value, pickup function
Operate time, pickup function
Reset time, pickup function
Timer
Table 39. Rate-of-change frequency protection SAPFRC (81)
Function
Operate value, pickup function
Operate value, restore enable frequency
Timers
Operate time, pickup function
ABB Power Grids
M13360-1 v7
M14964-1 v7
M14976-1 v5
© Copyright 2011 ABB Power Grids. All rights reserved
Range or value
(35.00-75.00) Hz
(45 - 65) Hz
At 50 Hz: 200 ms typically at f
f -0.5 Hz
set
At 60 Hz: 170 ms typically at f
f -0.5 Hz
set
At 50 Hz: 60 ms typically at f
set
f +0.5 Hz
set
At 60 Hz: 50 ms typically at f
set
f +0.5 Hz
set
(0.000-60.000)s
(0.000-60.000)s
Range or value
(35.00-75.00) Hz
At 50 Hz: 200 ms typically at f
f +0.5 Hz
set
At 60 Hz: 170 ms at f -0.5 Hz to f
set
Hz
At 50 and 60 Hz: 55 ms typically at f
Hz to f -0.5 Hz
set
(0.000-60.000)s
Range or value
(-10.00-10.00) Hz/s
(45.00 - 65.00) Hz
(0.000 - 60.000) s
At 50 Hz: 100 ms typically
At 60 Hz: 80 ms typically
1MRK 504 127-BUS B
Accuracy
± 2.0 mHz
± 2.0 mHz
+0.5 Hz to -
set
+0.5 Hz to
set
-0.5 Hz to -
-0.5 Hz to
<250 ms
<150 ms
Accuracy
± 2.0 mHz at
symmetrical three-
phase voltage
-0.5 Hz to -
set
+0.5
set
+0.5 -
set
<250 ms
Accuracy
± 10.0 mHz/s
± 2.0 mHz
<130 ms
-
IP15754-1 v2
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