Section 5
Differential protection
5.2.8
5.3
5.3.1
98
IEC05000301 V1 EN
Figure 45:
Logic diagram for 1Ph High impedance differential protection
HZPDIF
Technical data
Table 27:
HZPDIF technical data
Function
Range or value
Operate voltage
(20-400) V
I=U/R
Reset ratio
>95%
Maximum
U>Trip
continuous voltage
Operate time
15 ms typically at 0 to 10 x U
Reset time
90 ms typically at 10 to 0 x U
Critical impulse time
2 ms typically at 0 to 10 x U
Generator differential protection GENPDIF
Identification
Function description
Generator differential protection
2
/series resistor ≤200 W
d
d
d
IEC 61850
identification
GENPDIF
1MRK 502 034-UEN -
Accuracy
± 1.0% of I
r
-
-
-
-
-
IEC 60617
ANSI/IEEE C37.2
identification
device number
87G
I
>
d
SYMBOL-NN V1 EN
Technical Manual