ABB ret650 - Technical Data; Negative Sequence Based Overcurrent Function DNSPTOC; Identification

( )
Old Calculated
S k S 1 k S= × + - ×
EQUATION1959 V1 EN (Equation 66)
Where
S is a new measured value to be used for the protection function
S
old
is the measured value given from the function in previous execution cycle
S
Calculated
is the new calculated value in the present execution cycle
k
TD
is settable parameter by the end user which influence the filter properties
Default value for parameter k is 0.00. With this value the new calculated value is
immediately given out without any filtering (that is without any additional delay).
When k is set to value bigger than 0, the filtering is enabled. A typical value for k=0.92
in case of slow operating functions.
8.8.5 Technical data
Table 123: GOPPDOP, GUPPDUP technical data
Function
Range or value Accuracy
Power level (0.0–500.0)% of SBase ± 1.0% of S
r
at S < S
r
± 1.0% of S at S > S
r
(1.0-2.0)% of SBase < ± 50% of set value
(2.0-10)% of SBase < ± 20% of set value
Characteristic angle (-180.0–180.0) degrees 2 degrees
Timers (0.010 - 6000.000) s ± 0.5% ± 25 ms
8.9 Negative sequence based overcurrent function
DNSPTOC
8.9.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Negative sequence based overcurrent
function
DNSPTOC
3I2>
IEC09000132 V2 EN
46
1MRK 504 135-UEN A Section 8
Current protection
197
Technical manual