Thytronic XMR-T User Manual

FUNCTION CHARACTERISTICS
131
TV monitoring (74VT)
For both measuring criteria, a block of the U
E
> and U
E
>> threshold may be select when the 74VT
function is active (internal and/or external). The blocking enabling parameters
74VTint59N and-
74VText59Nare available inside the Set \ Profile A (or B or C or D) \ Residual overvoltage-59N \
Common configuration menu.
[1]
The first threshold trip (U
E
>) may be inhibited by start of the second threshold (U
E
>>) by setting ON
the UE> Disabling by UE>> start (UE>disbyUE>>) parameter available inside the Set \ Profile A (or
B or C or D) \ Residual overvoltage-59N \ UE>> Element \ Setpoints menu.
An adjustable reset time delay is provided for every threshold (t
UE>RES
, t
UE>>RES
).
Breaker failure (BF)
Each thresholds (UE>, UE>>) can be associated to BF protection by activating the relative parameter
in the matrices “Selection of function tripping for BF” in relevant BF menus
[2]
:
• Set \ Profile A (or B or C or D)\ Breaker failure
Logical block (Block1)
If the UE>BLK1and/orUE>>BLK1 enabling parameters are set to ON and a binary input is de-
signed for logical block (Block1), the protection is blocked off whenever the given input is active.
The trip timer is held in reset condition, so the operate time counting starts when the input block goes
down.
[3]
The enabling parameters are available inside the Set \ Profile A (or B or C or D) \ Residual
overvoltage - 59N \ UE> Element (UE>> Element) \ Setpoints menus, while the Block1 function must
be assigned to the selected binary input inside the Set \ Board1(2) inputs \ Binary input IN1-1...INx-x)
menus.
Note 1 The operating time must be adjusted to a greater value than the 74VT activation time (internal or binary input)
Note 2 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu.
Note 3 The exhaustive treatment of the logical block (Block 1) function may be found in the “Logic Block” paragraph inside CONTROL AND MONITOR-
ING section.
all-F59N.ai
Logic diagram concerning the residual overvoltage element - 59N
U
E
UE> Element
UE>> Element
Start U>>
Start UE>> Start UE>
Trip UE> Trip UE>>
&
UE> disbyUE>>
U> inhibition
t
UE> def
t
UE> inv
UE>
def
t
UE>> def
t
UE>>RES
t
UE>RES
UE>>
def
UE>
inv
UE> Curve UE> Enable State
Block1
BLK1UE>
&
UE>BLK1
Start UE>
&
Block1
BLK1UE>>
&
UE>>BLK1
Start UE>>
&
&
74VT
U
E
&
74VT
&
74VTint
74VTint-Block
74VText-Block
&
74VText
U
E
(misura diretta)
U
EC
(misura calcolata)
U
E
Common configuration
3Votype59 N
74VTint59 N
74VText59 N
Timers-F59N.ai
UE> Start
UE> Trip
t
UE>
t
UE>
RESET
INPUT
t
UE>RES
t
UE>RES
t
UE>RES
t
Timers concerning the first element of residual overvoltage protection- 59N
XMR-T EQUIPMENT MANUAL
Ed. 2.9 - 02/2021

Thytronic XMR-T Specifications

General

Brand	Thytronic
Model	XMR-T
Category	Protection Device
Language	English