Thytronic Pro-N NVA100X-D

FUNCTION CHARACTERISTICS
157
NVA100X-D - Manual - 02 - 2016
Residual overcurrent (50N.1/51N.1) - First element logic diagram (IE1>)
RESET
t
E1>
0T
Fun_50N-51NS1.ai
t
E1>RES
T0
≥1
t
E1>def
t
E1>inv
t
E1>RES
Start IE1>
Trip IE1>
CB-State
Start I
2ndh>
ON≡Inhibit
(from IE1>> and/or IE1>>> residual overcurrent element)
ON≡Enable IE1> residual overcurrent element
IE1> inhibition
Block1, Block2, Block4
&
T0
t
E1CLP>
&
2nd harmonic restraint enable (ON≡Enable)
IE1>2ndh-REST
IE1CLP>Mode
t
E1 CLP >
BF Enable (ON≡Enable)
IE1>BF
towards BF logic
IE1> BF
&
Trip IE1>
TRIPPING MATRIX (LED+RELAYS)
I
E1
> Curve
0T
A
B
C
A =“1”A =“0 or OFF”
Output
t
E1CLP>
IE1> Enable
IE1> overcurrent element (50N.1/51N.1) Block diagram
t
E1CLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
E1CLP>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
I
E1
>TR-K
I
E1
>TR-L
I
E1
>ST-L
I
E1
>ST-K
≥1
CLP I
E1
>
I
E1
≥1
(Pickup within CLP)
(Pickup outside CLP)
I
E1 CLP >def
I
E1 CLP >inv
I
E1
≥ I
E1CLP
>
&
State
I
E1
>
inv
I
E1
≥ I
E1
>
def
I
E1
≥ I
E1
>
inv
I
E1
>
def
&
State