Thytronic Pro-N NVA100X-D

FUNCTION CHARACTERISTICS
167
NVA100X-D - Manual - 02 - 2016
RESET
t
EC>
0T
t
EC>RES
T0
≥1
t
EC>def
t
EC>inv
t
EC>RES
Start IEC>
Trip IEC>
CB-State
Start I
2ndh>
ON≡Inhibit
(from IEC>> and/or IEC>>> residual overcurrent element)
ON≡Enable IEC> residual overcurrent element
IEC> inhibition
Block1, Block2, Block4
&
T0
t
ECCLP>
&
2nd harmonic restraint enable (ON≡Enable)
IEC>2ndh-REST
IECCLP>Mode
t
E CCLP >
BF Enable (ON≡Enable)
IEC>BF
towards BF logic
IEC> BF
&
Trip IEC>
TRIPPING MATRIX (LED+RELAYS)
I
EC
> Curve
0T
A
B
C
A =“1”A =“0 or OFF”
Output
t
ECCLP>
IEC> Enable
IEC> calculated residual overcurrent element Block diagram
t
ECCLP>
CB State CB OPEN CB CLOSED CB OPEN
Output t
ECCLP>
t
0.1 s
HIGH THRESHOLD/
BLOCK
LOW THRESHOLD/
UNBLOCK
HIGH THRESHOLD/
BLOCK
A = ON - Change setting
B = OFF
C = ON - Element blocking
I E C>TR-K
I
E C>TR-L
I
E C>ST-L
I
E C>ST-K
≥1
CLPI E C>
I
EC
≥1
(Pickup within CLP)
(Pickup outside CLP)
I
ECCLP>def
I
ECCLP>inv
I
E
C
≥ I
ECCLP
>
&
State
I
E C
>
inv
I
E
C
≥ I
E C
>
def
I
E
C
≥ I
E C
>
inv
I
E C
>
def
&
State
Note Inside diagrams and text the IEC is the current residual current calculated by the vector sum of the currents
of the selected side (the H or L side)
Calculated residual overcurrent - 50N(Comp)/51N(Comp) - First element logic diagram (IEC>) Sheet 1 of 2