Areva MiCom P120, Technical Manual, Page: 56 / 668

P12x/EN FT/A96 User Guide
Page 20/72
MiCOM P120/P121/P122/P123
The following table lists the protection functions that can be assigned to the LEDs (5 to 8) for
each model of relay.
TEXT Information
I>
Instantaneous first phase threshold
I>>
Instantaneous second phase threshold
I>>>
Instantaneous third phase threshold
tI> Time delayed first phase threshold
tI>> Time delayed second phase threshold
tI>>> Time delayed third phase threshold
Ie> Instantaneous first earth threshold
Ie>> Instantaneous second earth threshold
Ie>>>
Instantaneous third earth threshold
tIe>
Time delayed first earth threshold
tIe>>
Time delayed second earth threshold
tIe>>>
Time delayed third earth threshold
Input 1
Copy of the status of the Logic Input n°1
Input 2 Copy of the status of the Logic Input n°2
t Aux 1 Copy of the status of the Logic Input delayed by t Aux 1
t Aux 2 Copy of the status of the Logic Input delayed by t Aux 2
Equation A Output of Boolean Equation A
Equation B Output of Boolean Equation B
Equation C
Output of Boolean Equation C
Equation D
Output of Boolean Equation D
Equation E
Output of Boolean Equation E
Equation F
Output of Boolean Equation F
Equation G
Output of Boolean Equation G
Equation H Output of Boolean Equation H
Therm Trip Trip on Thermal overload
Brkn Cond. Broken conductor detection
CB Fail Detection of a Circuit Breaker failure (CB not open at the end
of tBF timer)
tI2> Time delayed negative phase sequence (1
st
threshold)
t Aux 3 Copy of the status of the Logic Input delayed by t Aux 3
Input 3 Copy of the status of the Logic Input n°3
tI2>>
Time delayed negative phase sequence (2
nd
threshold)
Input 4
Copy of the status of the Logic Input n°4
Input 5
Copy of the status of the Logic Input n°5
Recloser Run
Signal that Autoreclose cycle is working
Recloser Blocked
Auto-recloser function blocked
t SOTF Switch on to fault timer expired
t Aux 4 Copy of the status of the Logic Input delayed by t Aux 4