98
98
NC20 - Manual - 01 - 2015
FUNCTION CHARACTERISTICS
ments (Block2 Iph) or by any protection element (Block2 Iph/IE) according the selectivity block
criteria.
[1]
The enable
IE>BLK2IN, IE>>BLK2IN
and/or
IE>>>BLK2IN
parameters are avail-
able inside the
Set \ Profi le A(or B) \ Residual overcurrent-50N/51N \
IE> Element
(
IE>> Element
,
IE>>> Element) \ Setpoints
menus, while the
Block2 Iph
and
Block2 Iph/IE
functions must be
assigned to the selected binary inputs inside the
Set \ Inputs \ Binary input IN1(2)
menus (IN1 or
IN2 matching).
Use of committed pilot wire output BLOUT1:
The information about phase or phase+earth block may be select programming the
ModeBLOUT1
parameter (
OFF - ON IPh - ON IPh/IE - ON IE
) inside
Set \ Profi le A(or B) \ Selective block-
BLOCK2 \ Selective block OUT
menus.
Use of output relay (K1...K6):
If the
IE>BLK2OUT, IE>>BLK2OUT
and/or
IE>>>BLK2OUT
enable parameters are set to
ON
and a output relay is designed for selective block (Block2), the protection issues a block output
by phase elements (BLK2OUT-Iph) or by any protection element (BLK2OUT-Iph/IE), whenever the
given element (Start IED>, Start IED>>, Start IED>>> and/or Start IED>>>>) becomes active. The
enable
IED>BLK2OUT, IED>>BLK2OUT, IED>>>BLK2OUT
and/or
IED>>>>BLK2OUT
parameters (
ON
or
OFF
) are available inside the
Set \ Profi le A(or B) \ Residual overcurrent-
50N/51N \
IE> Element
(
IE>> Element
,
IE>>> Element) \Setpoints
menus, while the
BLK2OUT-
Iph-K, BLK2OUT-Iph/IE-K
and/or
BLK2OUT-IE-K
output relays and LEDs (
BLK2OUT-Iph-L,
BLK2OUT-Iph/IE-L
e/o
BLK2OUT-IE-L
) must be select inside the
Set \ Profi le A(or B) \ Selec-
tive block-BLOCK2 \ Selective block OUT
menu.
Note 1 The exhaustive treatment of the selective block (Block 2) function may be found in the “Selective Block” paragraph inside
CONTROL AND
MONITORING
section
•
•