Thytronic Pro-N NVA100X-D

FUNCTION CHARACTERISTICS
159
NVA100X-D - Manual - 02 - 2016
Residual overcurrent (50N.1/51N.1) - Second element logic diagram (IE1>>) (Sheet 1 of 2)
Fun_50N-51NS2.ai
t
E1>>RES
T0
RESET
t
E1>>
0T
≥1
t
E1>>def
t
E1>>RES
Start IE1>>
Trip IE1>>
CB-State
Start I
2ndh>
IE1>> inhibition
Block1, Block2, Block4
&
IE1>>TR-K
IE1>>TR-L
IE1>>ST-L
IE1>>ST-K
T0
t
ECLP>>
&
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)
A
B
C
Output t
ECLP>>
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
&
(ON≡
Inhibit )
Start IE1>>
Start IE1>>
IE1> inhibition
IE1> disbylE>>
≥1
CLP IE1>>
ON≡Inhibit
(from IE1>>> residual overcurrent element)
ON≡Enable IE1>> residual overcurrent element
I
E1>>def
A =“1”A =“0 or OFF”
I
E1
(Pickup within CLP)
(Pickup outside CLP)
I
E1 CLP >>def
I
E1
≥ I
E1CLP
>>def
&
State
I
E1
≥ I
E1
>>
def