Three-Phase Inrush Detector Inrphar - ABB RED615 Technical Manual

1YHT530004D05 D
Section 5
5.1
5.1.1
5.1.2
5.1.3
5.1.4
615 series
Technical Manual
Protection related functions

Three-phase inrush detector INRPHAR

Identification
Function description
Three-phase inrush detector
Function block
A070377 V1 EN
Figure 281: Function block
Functionality
The transformer inrush detection INRPHAR is used to coordinate transformer
inrush situations in distribution networks.
Transformer inrush detection is based on the following principle: the output signal
BLK2H is activated once the numerically derived ratio of second harmonic current
I_2H and the fundamental frequency current I_1H exceeds the set value.
The operate time characteristic for the function is of definite time (DT) type.
The function contains a blocking functionality. Blocking deactivates all outputs
and resets timers.
Operation principle
The function can be enabled and disabled with the Operation setting. The
corresponding parameter values are "On" and "Off".
Protection related functions
IEC 61850 IEC 60617
identification identification
INRPHAR 3I2f>
Section 5
ANSI/IEEE C37.2
device number
68
537