Thytronic Pro-N NVA100X-D Manual Download Page 132

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132

NVA100X-D - Manual - 02 - 2016

FUNCTION CHARACTERISTICS

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

I(H)>BLK2IN, I(H)>>BLK2IN

and/or

I(H)>>>BLK2IN

parameters are set to

and

a binary input is designed for selective block (Block2), the protection is blocked off by phase ele-

ments (Block2 Iph) or by any protection element (Block2 Iph/IE) according the selectivity block

criteria.

[1]

The enable

I(H)>BLK2IN, I(H)>>BLK2IN

and/or

I(H)>>>BLK2IN

parameters

are available inside the

Set \ Proﬁ le A(or B) \ Phase overcurrent-50/51 side H \

I(H)> Element

(

I(H)>>

Element

I(H)>>> Element) \ Setpoints

menus, while the

Block2 Iph

and

Block2 Iph/IE

functions

must be assigned to the selected binary inputs inside the

Set \ Board1(2) inputs \ Binary input IN1-

1...INx-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

I(H)>BLK2OUT, I(H)>>BLK2OUT

and/or

I(H)>>>BLK2OUT

enable parameters are

set to

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), when-
ever the given element (Start I(H)>, Start I(H)>> e/o Start I(H)>>>) becomes active. The enable

I(H)>BLK2OUT, I(H)>>BLK2OUT

and/or

I(H)>>>BLK2OUT

parameters (

OFF

) are

available inside the

Set \ Proﬁ le A(or B) \ Phase overcurrent-50/51 side H \

I(H)> Element

(

I(H)>>

Element

I(H)>>> Element) \ Setpoints

menus, while the

BLK2OUT-Iph-K, BLK2OUT-Iph/IE-

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 \ Selec-

tive block OUT

menu.

Internal selective block (Block4)

As well as to send or transmit a selective block toward other protective relays, each protective
element may be enabled for receive or transmit a selective block from/to other internal protective
elements.

[2]

The internal selective block of one or more element concerning the phase overcurrent function may

be enabled/disabled by means the

I(H)>BLK4

I(H)>>BLK4

, and/or

I(H)>>>BLK4

parameters

(virtual input and output common to all protective thresholds); the following operating modes are
available:

IN - the element is enabled to receive the selective block from an internal input.
OUT - the element is enabled to send the selective block to an internal output.
OFF - the element is disabled to send/receive the internal selective block.

Transmission and reception for the same element is not allowed, so any stall situation due to wrong

setting is avoided.

The internal selective block can work together with an external selective block from other protective

relays (Block2).

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

Nota 2 The exhaustive treatment of the internal selective block (Block 4) function may be found in the “Internal selective block” paragraph inside

CONTROL AND MONITORING

section.

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