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NVA100X-D - Manual - 02 - 2016
FUNCTION CHARACTERISTICS
If the CLP function (Cold Load Pick-up) is enabled for threshold change, the selected threshold may
be changed for an adjustable time interval, starting from the circuit breaker closure.
This operating mode (
ON-Change setting =
IEDCCLP> Mode, IEDCCLP>> Mode, IEDC-
CLP>>> Mode, IEDCCLP>>>> Mode
) and the concerning operating time within the CLP
(
tEDCLP>, tEDCLP>>, tEDCLP>>>, tEDCLP>>>>
) may be adjusted inside the
Set \ Pro-
fi le A(or B) \ Directional earth fault overcurrent-67N(Comp) \
IEDC> Element
(
IEDC>> Element
,
IEDC>>> Element
,
IEDC>>> Element) \ Setpoints menus
, whereas the operating thresholds within
the CLP (
IEDCCLP>def, IEDCCLP>inv,....
) may be adjusted inside the
Set \ Profi le A(or B) \
Directional earth fault overcurrent-67N(Comp) \
IEDC> Element
(
IEDC>> Element
,
IEDC>>> Element
,
IEDC>>> Element) \ Defi nite time (Inverse time)
menus
.
For every of the four thresholds the following block criteria are available:
Logical block (Block1)
If the
IEDC>BLK1, IEDC>>BLK1, IEDC>>>BLK1
and/or
IEDC>>>>BLK1
enabling param-
eters are set to
ON
and a binary input is designed for logical block (Block1), the concerning element
is blocked off whenever the given input is active.
[1]
The enabling parameters are available inside the
Set \ Profi le A(or B) \ Directional earth fault overcurrent-67N(Comp) \
IEDC> Element
(
IEDC>> Ele-
ment
,
IEDC>>> Element
,
IEDC>>> Element) \ Setpoints
menus, while the
Block1
function must be
assigned to the selected binary input inside the
Set \ Board 1(2) inputs \ Binary input IN1-1...(IN1-x)
menus.
Selective block (Block2)
All along the protective elements the selective block may be set.
The logic selectivity function may be performed by means any combination of the following I/O:
One committed pilot wire input (BLIN1).
One or more binary inputs designed for input selective block.
One committed pilot wire output (BLOUT1).
One or more output relays designed for output selective block.
Only when the committed pilot wire are used the continuity check of the pilot wire link is active.
Use of committed pilot wire input BLIN1:
The protection is blocked off according the selectivity block criteria when the input BLIN1 is active.
The information about phase or phase+earth block may be select programming the
ModeBLIN1
parameter inside the
Set \ Profi le A(or B) \ Selective block-BLOCK2 \ Selective block IN
menus.
Use of binary inputs:
If the
IEDC>BLK2IN, IEDC>>BLK2IN, IEDC>>>BLK2IN
and/or
IEDC>>>>BLK2IN
parameters are set to
ON
and a binary input is designed for selective block (Block2), the pro-
tection is blocked off by phase elements (Block2 Iph) or by any protection element (Block2 Iph/
IE) according the selectivity block criteria.
[2]
The enable
IEDC>BLK2IN, IEDC>>BLK2IN,
IEDC>>>BLK2IN
and/or
IEDC>>>>BLK2IN
parameters are available inside the
Set \ Pro-
fi le A(or B) \ Directional earth fault overcurrent-67N(Comp) \
IEDC> Element
(
IEDC>> Element
,
IEDC>>> Element
,
IEDC>>>> Element) \ Setpoints
menus, while the
Block2 Iph
and
Block2 Iph/
IE
functions must be assigned to the selected binary inputs inside the
Set \ Board 1(2) inputs \
Binary input IN1-1...(IN1-x)
menus.
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:
If the
IEDC>BLK2OUT, IEDC>>BLK2OUT, IEDC>>>BLK2OUT
and/or
IEDC>>>>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 IEDC>, Start
IEDC>>, Start IEDC>>> and/or Start IEDC>>>>) becomes active. The enable
IEDC>BLK2OUT,
IEDC>>BLK2OUT, IEDC>>>BLK2OUT
and/or
IEDC>>>>BLK2OUT
parameters (
ON
or
OFF
) are available inside the S
et \ Profi le A(or B) \ Directional earth fault overcurrent-67(Comp) \
IEDC> Element
(
IEDC>> Element
,
IEDC>>> Element
,
IEDC>>>> 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) \ Selective block-BLOCK2 \ Selective block OUT
menu
.
Note 1 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside
CONTROL AND MONITOR-
ING
section
Note 2 The exhaustive treatment of the selective block (Block 2) function may be found in the “Selective Block” paragraph inside
CONTROL AND
MONITORING
section
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