Thytronic XMR-V 4V User Manual

FUNCTION CHARACTERISTICS
263
If the operation mode is switched to “not directional” (by the 74VT function), the start of any 67N
threshold becomes active when the following is complied:
- The residual current (I
E
) fundamental component overcomes the threshold (I
ED>
, I
ED>>
, I
ED>>>
,
I
ED>>>>
)
For both the operating mode (module or projection), when the start signal goes ON a concerning
counter starts; after expiry of the associated operate time (t
ED>
, t
ED>>
, t
ED>>>
, t
ED>>>>
) a trip command
is issued, if instead the above conditions don’t remain valid, the element it is restored.
All the parameters are located inside the menus concerning the four elements, separately for defini-
te and inverse time characteristics.
Example: the operate time concerning the first threshold with definite time characteristic (IED>def)
is available inside the Set \ Profile A (or B) \ Directional earth fault overcurrent-67N \ IED> Element
\ Definite time menu.
All directional earth fault overcurrent elements can be enabled or disabled by setting ON or OFF the
IED>Enable, IED>>Enable,, IED>>>Enablee/o IED>>>>Enableparameters inside
the Set \ Profile A (or B)\Directional earth fault overcurrent-67N \ IED> Element (IED>> Element,
IED>>> Element, IED>>> Element) \ Setpoints menus.
The first and second overcurrent element can be programmed with definite or inverse time characte-
ristic by setting the
IED>Curveand/orIED>>Curve (DEFINITE,IEC/BSA,IEC/BSB,IEC/
BSC,ANSI/IEEMI,ANSI/IEEVI,ANSI/IEEEI,EM) available inside the Set \ Profile A (or B) \
Directional earth fault overcurrent-67N \ IED> Element (IED>> Element) \ Setpoints menus.
The trip of IED> element may be inhibited by the start of the second, third and/or fourth element
(I
ED>>
, I
ED>>>
, I
ED>>>>
) by setting ON the Disable IED> by start IED>>, Disable IED> by start IED>>>, Di-
sable IED> by start IED>>>> (
IED>disbyIED>>,IED>disbyIED>>>,IED>disbyIED>>>>)
parameters available inside the Set \ Profile A (or B) \ Directional earth fault overcurrent-67N
\ IED>> Element (IED>>> Element, IED>>>> Element) \ Setpoints menus.
Similarly the trip of the:
• IED>> element may be inhibited by start of the third and/or fourth element (IED>>> and/or IED>>>>)
by setting ON the Disable IED>> by start IED>>>, start IED>>>> (
IED>>disbyIED>>>, IE-
D>>disbyIED>>>>) parameter available inside the Set \ Profile A (or B) \ Directional earth
fault overcurrent-67N \ IED>>> Element (IED>>>> Element) \ Setpoints menus.
• IED>>> element may be inhibited by start of the fourth element (IED>>>>) by setting ON the Di-
sable IED>>> by start IED>>>> (IED>>>disbyIED>>>>) parameter available inside the Set \
Profile A (or B) \ Directional earth fault overcurrent-67N \ IED>>>> Element \ Setpoints menu.
All the named parameters can be set separately for Profile A and Profile B.
An adjustable reset time delay is provided for every threshold (t
ED>RES
, t
ED>>RES
, t
ED>>>RES
, t
ED>>>RES
).
.
Breaker failure (BF)
Each thresholds (IED>, IED>>, IED>>>, IED>>>>) can be associated to BF (H) and BF (L) protection
by activating the relative parameter in the matrices “Selection of function tripping for BF (H)” or
“Selection of function tripping for BF (L)” in relevant BF menus
[1]
:
• Set \ Profile A (or B) \ Breaker failure - BF side H
• Set \ Profile A (or B) \ Breaker failure - BF side L
Cold load pickup (CLP)
CB Side CLP – CB-CLP67N parameter defines the circuit breaker whose closure starts 67N CLP
function. The parameter is found in Set \ Profile A (or B) \ Directional earth fault overcurrent-67N\
Common configuration.
If the CLP function (Cold Load Pick-up) is enabled for element blocking, the selected threshold may
be blocked for an adjustable time interval, starting from the circuit breaker closure.
This operating mode may be select by setting
ON-Element blocking the IEDCLP> Mode, IE-
DCLP>>Mode,IEDCLP>>>Mode,IEDCLP>>>>Mode parameters.
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 = IEDCLP> Mode, IEDCLP>> Mode, IE-
DCLP>>>Mode,IEDCLP>>>>Mode) and the concerning operating time within the CLP (tE-
DCLP>,tEDCLP>>,tEDCLP>>>,tEDCLP>>>>) may be adjusted inside the Set \ Profile A
(or B) \ Directional earth fault overcurrent-67N \ IED> Element (IED>> Element, IED>>> Element,
IED>>> Element) \ Setpoints menus, whereas the operating thresholds within the CLP ( IEDCL-
P>def,IEDCLP>inv,....) may be adjusted inside the Set \ Profile A (or B) \ Directional earth fault
Note 1 The common settings concerning the Breaker failure protection are adjustable inside the Breaker Failure - BF menu.
Timers-F67N.ai
IED> Start
IED> Trip
t
ED>
t
ED>
RESET
INPUT
t
ED>RES
t
ED>RES
t
ED>RES
t
67N element timers - first element
XMR-D EQUIPMENT MANUAL
Ed. 2.9 - 02/2021

Thytronic XMR-V 4V Specifications

General

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