Monitored Data - ABB Relion Technical Manual

1MRK 502 048-UUS A
8.2.6
8.2.7
8.2.7.1
Technical manual

Monitored data

Table 94: EF4PTOC Monitored data
Name Type
STDIR INTEGER
IOp REAL
UPol REAL
IPol REAL
UPOLIANG REAL
IPOLIANG REAL
IOPDIR REAL
Operation principle
Four step residual overcurrent protection, zero or negative sequence direction EF4PTOC
(51N/67N) function has the following four "Analog Inputs" on its function block in the
configuration tool:
1. I3P, input used for "Operating Quantity".
2. V3P, input used for "Voltage Polarizing Quantity".
3. I3PPOL, input used for "Current Polarizing Quantity".
4. I3PDIR, input used for "Operating Directional Quantity".
These inputs are connected from the corresponding pre-processing function blocks in the
Configuration Tool within PCM600.
Operating quantity within the function
If the function is set to measure zero sequence, it uses Residual Current (3I
operating quantity. The residual current can be:
1. directly measured (when a dedicated CT input of the IED is connected in PCM600 to
the fourth analog input of the pre-processing block connected to EF4PTOC (51N/
67N) function input I3P). This dedicated IED CT input can be for example, connected
to:
Values (Range) Unit
3=Both -
1=Forward
2=Reverse
0=No direction
- A
- kV
- A
- deg
- deg
- A
Section 8
Current protection
Description
Fault direction coded as
integer
Operating current level
Polarizing voltage level
Polarizing current level
Angle between polarizing
voltage and operating current
Angle between polarizing
current and operating current
Amplitude of the directional
operating quantity
) for its
0
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