Technical Data - ABB REC650 ANSI Technical Manual

1MRK 511 287-UUS A
6.11.5
Technical manual
make slower measurement response to the step changes in the measured quantity.
Filtering is performed in accordance with the following recursive formula:
S TD S TD S
1
(
= ⋅ + −
Old
EQUATION1959-ANSI V1 EN
Where
S is a new measured value to be used for the protection function
S is the measured value given from the function in previous execution cycle
old
S is the new calculated value in the present execution cycle
Calculated
TD is settable parameter by the end user which influence the filter properties
Default value for parameter TD is 0.00. With this value the new calculated value is
immediately given out without any filtering (that is without any additional delay). When
TD is set to value bigger than 0, the filtering is enabled. A typical value for TD=0.92 in
case of slow operating functions.

Technical data

Table 104: GOPPDOP, GUPPDUP (32/37) technical data
Function
Power level
Characteristic angle
Timers
)
⋅
Calculated
Range or value
SBase
(0.0–500.0)% of
SBase
(1.0-2.0)% of
SBase
(2.0-10)% of
(-180.0–180.0) degrees
(0.010 - 6000.000) s
Section 6
Current protection
(Equation 30)
Accuracy
± 1.0% of S at S < S
r r
± 1.0% of S at S > S
r
< ± 50% of set value
< ± 20% of set value
2 degrees
± 0.5% ± 25 ms
161