Technical Data - ABB RET650 Technical Manual

Section 6
Differential protection
6.3.8
122
IEC05000301 V1 EN
Figure 49: Logic diagram for 1Ph High impedance differential protection
HZPDIF

Technical data

Table 48: HZPDIF technical data
Function Range or value
Operate voltage (20-400) V
I=U/R
Reset ratio >95%
Maximum continuous
U>Trip
power
Operate time 10 ms typically at 0 to 10 x U
Reset time 100 ms typically at 10 to 0 x U
Critical impulse time 2 ms typically at 0 to 10 x U
2
/SeriesResistor ≤200 W
d
d
d
1MRK 504 135-UEN A
Accuracy
± 1.0% of I
r
-
-
-
-
-
Technical manual