Thytronic NA10

FUNCTION CHARACTERISTICS
47
NA10 - Manual - 04 - 2022
all-F50-51.ai
General logic diagram of the phase overcurrent elements - 50/51
I
L1
I
L2
I
L3
I
L1
I
L2
I
L3
I
L1
I
L2
I
L3
≥
I>> inhibition
BLK1I>>>
I>>>BF
I>>> Element
Start I>>>
Start I>>>
Start I>>>
Trip I>>>
Trip I>>>
&
I>> disbyI>>>
&
I>>>BLK2IN
&
I> disbyI>>>
t
>>> def
ICLP>>>
def
I>>>
def
ICLP>>>Mode
tCLP>>>
t
>>> RES
BLK1I>>
I>> Element
Start I>>
Start I>>
Trip I>>
&
I> disbyI>>
&
I>>BLK1
t
>> def
ICLP>>
def
I>>
def
t
>> inv
ICLP>>
inv
I>>
inv
I>>Curve
ICLP>>Mode
tCLP>>
t
>> RES
I>> Enable
I>>> Enable
I> inhibition
Block1
BLK1I>
CLPI>
CLPI>>
CLPI>>>
I> Element
BLK2OUT
BLK2INI>
Start I>
Trip I>
&
I>BLK1
Block2
&
I>BLK2IN
Start I2ndh>
&
I>2ndh-REST
I>BLK2OUT
Start I2ndh>
&
I>>2ndh-REST
Start I2ndh>
&
I>>>2ndh-REST
&
I>>>BF
I>>BF
I>> Trip
&
I>>BF
I>BF
Trip I>
&
I>BF
Start I>
&
BLK2OUT
I>>BLK2OUT
Start I>>
&
BLK2OUT
I>>>BLK2OUT
Start I>>>
&
Block1
&
I>>>BLK1
Block1
Block2
t
> def
ICLP>
def
I>
def
t
> inv
ICLP>
inv
I>
inv
I>Curve
ICLP>Mode
tCLP>
t
> RES
I> Enable
Start I>
&
Start I>>
&
Start I>>>
&
&
I>>BLK2IN
BLK2INI>>
Block2
Start I>>
&
BLK2INI>>>
Start I>>>
&
Start I>
&