Thytronic XMR-P 4l+4V User Manual

FUNCTION CHARACTERISTICS
169
inside the Profile A (or B) \ Inadvertent energization-50/27 \ 1st Pickup Element \ Setpoints menu.
The status of the machine breaker is associated with a relay binary input; in particular the status
of open circuit breaker must be acquired (CB auxiliary contact that activates the logic input as the
switch is open).
The 52a parameter must be assigned to the selected binary inputs inside the Common parameters \
Binary inputs allocation menu.
The protection element is blocked off whenever the VT supervision function are active, so that no
unwanted trip can arise if any fault on the VTs secondary circuits (break, fuse trip, etc) are de-
tect;
1
the Block functions enable from 74VT parameter (74VT-BK-EN) are available inside the
Common Parameters \ VT supervision -74VT menu.
Logical block (Block1)
If the Block1 enabling parameter is 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.
2
The enabling parameter is
available inside the Profile A (or B) \ Inadvertent energization-50/27 \ 1st Pickup Element \ Setpoints
menu, while the Block1 function must be assigned to the selected binary input inside the Common
parameters \ Binary inputs allocation menu.
Breaker failure (BF)
50-27 (IUE) threshold can be associated to BF (H) and BF (L) protection by activating the relative pa-
rameter in the matrices “Selection of function tripping for BF (H)” or “Selection of function tripping
for BF (L)” in relevant BF menus
3
:
• Set \ Profile A (or B) \ Breaker failure - BF side H
• Set \ Profile A (or B) \ Breaker failure - BF side L
Note 1 The exhaustive treatment of the VT and CT supervision function may be found inside the CONTROL AND MONITORING section.
Note 2 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 3 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu.
all-F50-27.ai
I
L1
I
L2
I
L3
U
L1
U
L2
U
L3
Block3
1st Pickup Element
Block1
CB
Block1
50+27 Trip
I
UE
> Start
U
UE
> Start
50+27 element VT position I
UE
> U
UE
< t
UE
t
UE-RES
General logic diagram of the inadvertent energization element - 50+27
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021

Thytronic XMR-P 4l+4V Specifications

General

Brand	Thytronic
Model	XMR-P 4l+4V
Category	Protection Device
Language	English