ABB ret650 - Technical Data; Restricted Earth-Fault Protection, Low Impedance REFPDIF; Identification

6.1.5 Technical data
Table 35: T2WPDIF, T3WPDIF technical data
Function
Range or value Accuracy
Operating characteristic Adaptable ± 1.0% of Ir for I < Ir
± 1.0% of I for I > Ir
Reset ratio >94% -
Unrestrained differential current limit (1.00-50.00)x IBase on
high voltage winding
± 1.0% of set value
Base sensitivity function (0.05 - 0.60) x IBase ± 1.0% of Ir
Minimum negative sequence current (0.02 - 0.20) x IBase ± 1.0% of Ir
Operate angle, negative sequence (30.0 - 90.0) degrees ± 1.0 degrees
Second harmonic blocking (5.0-100.0)% of
fundamental differential
current
± 2.0% of applied harmonic
magnitude
Fifth harmonic blocking (5.0-100.0)% of
fundamental differential
current
± 12.0% of applied harmonic
magnitude
Connection type for each of the windings Y or D -
Phase displacement between high voltage
winding, W1 and each of the windings, W2
and W3. Hour notation
0–11
-
Operate time, restrained function 25 ms typically at 0 to 5
x set level
-
Reset time, restrained function 25 ms typically at 5 to 0
x set level
-
Operate time, unrestrained function 20 ms typically at 0 to 5
x set level
-
Reset time, unrestrained function 25 ms typically at 5 to 0
x set level
-
6.2 Restricted earth-fault protection, low impedance
REFPDIF
6.2.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Restricted earth-fault protection, low
impedance
REFPDIF
IdN/I
SYMBOL-AA V1 EN
87N
Section 6 1MRK 504 135-UEN A
Differential protection
110
Technical manual