Thytronic Pro-N NVA100X-D

FUNCTION CHARACTERISTICS
133
NVA100X-D - Manual - 02 - 2016
Phase overcurrent (50/51) side H - First element logic diagram (I>)
Fun_50-51S1.ai
I
L1H
I
L2H
t
(H)
>
RES
T0
RESET
t
(H)
>
0T
≥1
≥1
≥1
t
(H)
>
def
t
(H)
>
inv
t
(H)
>
RES
Start I
(H)
>
Trip I
(H)
>
CB-State
Start I
2ndh>
ON≡Inhibit (from I(H)>> and/or I(H)>>> overcurrent element)
ON≡Enable I(H)> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
I(H)> inhibition
Block1, Block2, Block4
&
T0
t
(H) CLP>
&
2nd harmonic restraint enable (ON≡Enable)
I
(H)
>2ndh-REST
I
(H)
CLP>Mode
I
(H)CLP
>
def
t
(H)CLP >
I
(H)CLP
>
inv
I
L1H
≥ I
(H)
>
BF Enable (ON≡Enable)
I
(H)
>BF
towards BF logic
I
(H)
> BF
&
Trip I
(H)
>
TRIPPING MATRIX (LED+RELAYS)
I
(H)
> Curve
0T
A
B
C
A =“1”A =“0 or OFF”
Output
t
(H) CLP>
I
L3H
I(H)> Enable
I
(H)
> overcurrent element (50/51) block diagram
t
CLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
CLP>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
I(H)>TR-K
I(H)>TR-L
I(H)>ST-L
I(H)>ST-K
≥1
CLP I
(H)
>
&
State
I
(H)
>
inv
I
L1H
≥ I
(H)
>
def
I
L1H
≥ I
(H)
>
inv
I
(H)
>
def
&
State