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Thytronic XMR-P 4l+4V - Page 179

Thytronic XMR-P 4l+4V
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FUNCTION CHARACTERISTICS
179
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>
ONInhibit (from I(H)>> and/or I(H)>>> overcurrent element)
ONEnable I(H)> overcurrent element
(Pickup within CLP)
(Pickup outside CLP)
I(H)> inhibition
Block1, Block2, Block4
&
T 0
t
(H)
CLP>
&
2nd harmonic restraint enable (ONEnable)
I
(H)
>2ndh-REST
I
(H)
CLP>Mode
I
(H)CLP
>
def
t
(H)CLP
>
I
(H)CLP
>
inv
I
L1H
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
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021

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