IM30-GLF
Doc. N° MO-0062-ING
Rev.
3
Date
14.02.2005
Copyright 2010 - Microener
Firmware:
2.0X
Pag
20
of
31
Display
Description
Setting Range
Step
Unit
tIr>
0.1
s
Independent trip time delay of reverse power element
0.1 - 60
0.01
s
=
270
C
Impedance characteristic angle (Max. sensitivity direction)
0 - 330
30
°
K
1
300
%Zb
Diameter of the circle
50 - 300
1
%
K
2
50
%Zb
Offset of the circle including the underimpedance tripping zone
(% of Zb=Vn/(
3 Ib)
Underimpedance trip is inhibited on undervoltage U<0,3Un
and undercurrent I<0,2Ib and frequency
36Hz
5 - 50
1
%
tz
0.2
s
Trip time delay of the underimpedance element
0.2 - 60
0,1
s
ti
0
s
Integration time of underimpedance element. To avoid non
operation in case of impedance swinging the reset of the trip time
delay “tz” only takes place if the measured impedance remains
outside the tripping zone for at least “ti”.
N.B
. “
ti” must be always shorter than “tz”
0 - 10
0.1
s
tBF
0.05
s
Max. reset time delay of the instantaneous elements after tripping
of the time delayed elements and time delay for activation of the
output relay associated to the Breaker Failure function
0.05 - 0.5
0.01
s
The setting Dis indicates that the function is disactivated.
12.2 - Programming the Configuration of Output Relays
Mode PROG menu F
RELAY (Production standard settings here under shown).
The key "
+
" operates as cursor; it moves through the digits corresponding to the four programmable
relays in the sequence 1,2,3,4,(1= relay R1, etc.) and makes start flashing the information actually
present in the digit. The information present in the digit can be either the number of the relay (if this was
already associated to the function actually on programming) or a dot (-) if the relay was not yet
addressed. The key "
-
" changes the existing status from the dot to the relay number or viceversa.
Display
Description
I>
-
- 3 -
Instantaneous element of low-set overcurrent
(only one or more, whatever combination)
operates relays R1,R2,R3,R4.
tI>
1 -
-
- As above, time delayed element
operates relay R1,R2,R3,R4
I>>
-
- 3 - Instantaneous element of high-set overcurrent
operates relay R1,R2,R3,R4
tI>>
1 -
-
- As above, time delayed element
operates relay R1,R2,R3,R4
O>
-
- 3 - Instantaneous element of low-set earth fault element
operates relay R1,R2,R3,R4.
tO>
1 -
-
- As above, time delayed element
operates relay R1,R2,R3,R4
1Is
1 -
-
- First unbalance element (time delayed)
operates relay R1,R2,R3,R4
2Is
- 2 -
- As above, second unbalance element
operates relay R1,R2,R3,R4
Ir>
1 -
-
- Reverse power time delayed element
operates relay R1,R2,R3,R4
Z<
1 -
-
- Underimpedance time delayed element
operates relay R1,R2,R3,R4
tBF
-
-
- 4 Breaker Failure function operates
output relay R1,R2,R3,R4.
tFRes:
A
The reset after tripping of the relays associated to the time delayed elements can take place:
(A)
automatically when current drops below the trip level.
(M)
manually by the operation of the "ENTER/RESET" key.
2:
--Ih--
The input (2) for blocking the time delayed elements relevant to phase and ground
faults operate on I>(Il) or I>>(Ih) or O>(Io) as programmed
t
2
OFF
The operation of the blocking input (2) can be programmed so that it lasts as long the blocking input
signal is present (t
2
=OFF) or so that, even with the blocking input still present, it only lasts for the set trip
time delay of the function plus an additional time 2xtBF (t
2
=2xtBF).
3:
--Ir
The blocking input (3) operate on function Z< or IR> as programmed
tI>
- 2 - 4
This dash means
that output relay
number 1 is not
assigned to this
element
This is the name of
protective element
The number 2
means that
output relay 2 will
operate when
this element
trips
This dash means
that output relay
number 3 is not
assigned to this
element
The number 4 means
that output relay 4 will
operate when this
element trips
