Technical Data; Negative Sequence Based Overcurrent Function Dnsptoc; Identification - ABB REC650 Technical Manual

Section 6
Current protection
6.11.5
6.12
6.12.1
152
( )
= × + - ×
S k S 1 k S
Old Calculated
EQUATION1959 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
k is settable parameter by the end user which influence the filter properties
TD
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.

Technical data

Table 104: GOPPDOP, GUPPDUP technical data
Function
Power level
Characteristic angle
Timers
Negative sequence based overcurrent function
DNSPTOC

Identification

Function description
Negative sequence based overcurrent
function
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
IEC 61850 IEC 60617
identification identification
DNSPTOC
IEC09000132 V2 EN
1MRK 511 287-UEN A
(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
ANSI/IEEE C37.2
device number
46
3I2>
Technical manual