Monitored Data; Operation Principle; Operating Quantity Within The Function - ABB RET650 Technical Manual

Section 8
Current protection
8.4.6
8.4.7
8.4.7.1
160

Monitored data

Table 89: 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 function has the following four "Analog Inputs" on its function block in the
configuration tool:
1. I3P, input used for "Operating Quantity".
2. U3P, 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 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
1MRK 504 135-UEN A
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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