ABB REG650 Product Manual page 50

Generator protection REG650
Product version: 1.3
Table 45. Overexcitation protection OEXPVPH
Function
Operate value, start
Operate value, alarm
Operate value, high level
Curve type
Minimum time delay for inverse
function
Alarm time delay
Table 46. 100% Stator E/F 3rd harmonic STEFPHIZ
Function
Fundamental frequency level UN
(95% Stator EF)
Third harmonic differential level
Third harmonic differential block
level
Timers
Filter characteristic:
Fundamental
Third harmonic
50
Range or value
(100–180)% of ( UBase /f )
rated
(50–120)% of start level
UBase /f
(100–200)% of ( )
rated
IEEE
×
(0.18 ) k
=
IEEE t :
- 2
( M 1)
(Equation 2)
EQUATION1319 V1 EN
where M = (E/f)/(Ur/fr)
(0.000–60.000) s
(0.00–9000.00)
Range or value
UBase
(1.0–50.0)% of
UBase
(0.5–10.0)% of
(0.1–10.0)% of UBase
(0.020–60.000) s
Reject third harmonic by 1–40
Reject fundamental harmonic by
1–40
Accuracy
± 0.5% of U
± 0.5% of U at U ≤ U
r r
± 0.5% of U at U > U
r
± 0.5% of U
± 5% + 40 ms
± 0.5% ± 25 ms
± 0.5% ± 25 ms
Accuracy
± 0.5% of U
r
± 5.0% of U
r
± 5.0% of U
r
± 0.5% ± 25 ms
-
1MRK 502 050-BEN B
ABB