Earth-Fault Detection; Negative-Sequence Overcurrent Indication Nsptoc; Inrush Detector Inrphar; Fault Passage Indicator Fpiptoc - ABB Remote I/O RIO600 Installation And Commissioning Manual

Section 6
Commissioning
6.1.7.4
6.1.7.5
6.1.7.6
6.1.7.7
150

Earth-fault detection

Three-phase non-directional overcurrent fault detection EPTOC
See Three-phase non-directional overcurrent fault detection

Negative-sequence overcurrent indication NSPTOC

See Negative-sequence overcurrent indication

Inrush detector INRPHAR

See Inrush detector INRPHAR.

Fault passage indicator FPIPTOC

Identification
Description
Fault passage indicator
Functionality
The fault passage indicator function FPIPTOC provides selective Fault Passage
Indicator (FPI) functionality for single-phase earth faults in high-impedance earthed
networks, that is, in compensated, unearthed and high resistance earthed systems. It
can be applied as single-phase earth fault FPI in case of overhead lines and
underground cables, regardless of actual earth-fault type (continuous, transient or
intermittent) or fault resistance value (low or high(er) ohmic).
FPIPTOC is based only on phase current measurements, thus it is applicable in cases
where voltage measurements are not available. Current measurement can be done
with conventional current transformers (CTs) or with sensors (Rogowski coils).
Accurate and reliable fault location information is the key for effective fault isolation
and supply restoration. With the fault passage information from the FPIPTOC, the
faulted line section can be quickly identified, and manual or automatic fault isolation
and supply restoration can be initiated.
The operating time characteristic is according to the definite time (DT).
Operation principle
The Operation setting is used to enable or disable the function. The corresponding
parameter values are "On" and "Off".
The operation of FPIPTOC can be described with a module diagram. All modules in
the diagram are explained in the next sections.
FPIPTOC is based on DFT-phasor calculation.
NSPTOC.
IEC 61850 IEC 60617
identification identification
FPIPTOC
Installation and Commissioning Manual
1MRS757488 H
EPTOC.
ANSI/IEEE C37.2
device number
RIO600