IG-150-EN version 04; 03/10/16
125
General instructions
ekor.rps
data acquisition functions
The 4 fault currents are simultaneous, and they are the ones
existing at the moment of the trip order.
1. Phases (A, B and C) pre-fault voltages (module and
angle)
2. Phases (A, B and C) pre-fault voltages (module and
angle)
The 4 fault voltages are simultaneous to the fault currents.
1. KI/KI
2
/KI
2
T (depending on the setting) per phase
Besides they are kept in non volatile memory, and they are
retrievable through keyboard /display, the following data
corresponding to the last 10 faults:
1. Tripped phases
2. Maximum phase and neutral currents during fault
3. Date and starting and ending time of the fault
7.3. Measurements
7.3.1. Measurements at the secondary
They are measurements referred to the fundamental
component, which are the ones used by the protection
functions:
By keyboard/display
1. Phase A current (module in amperes and angle in
degrees)
2. Phase B current " "
3. Phase C current " "
4. Neutral current " "
5. Sensitive neutral current
6. Phase A simple phase voltage (module in Volts and angle
in degrees)
7. Phase B simple phase voltage ( " " )
8. Phase C simple phase voltage ( " " )
9. Average simple phase voltage ( " " )
10. Neutral voltage
11. Frequency (in Hz)
12. Current maximeter (in amperes)
13. I
2
/I
1
negative sequence component in %
The phase current values in this screen are
absolute values, this is without the sign.
Note about the maximeter. The maximeter
shows the maximum value of the average
value during a specic time interval, of
the three phase average current. The
time interval is that programmed as” time
window for samplings” in the “measurement
historical” setting. The detailed operation is
the following one: Every second the three
phase average current is calculated and it is
accumulating; when an interval is over, the
accumulated value is divided by its number
of seconds; thus the average value of this
interval is obtained. If this value is higher
than the one in the maximeter, it is actualize
with the new value, taking note of the date
and time when it has been obtained.
Through PC (protections console)
They are on the rst of the "status" screens.
1. Phase A current (module in amperes and angle in degrees)
2. Phase B current
3. Phase C current
4. Neutral current
5. Phase A to earth voltage (module in volts and angle in
degrees)
6. Phase B to earth voltage
7. Phase C to earth voltage
8. Current maximeter (in amperes)
9. Voltage and current direct, inverse and zero sequences
All the angles are referred to the simple phase voltage of
phase A.
The phase current values in this screen are
absolute values, this is without the sign.
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