Alstom MX3EG1A - 1. TECHNICAL DATA

pag. 5
MDE/A133 2295 001
MX3EG1A
1. TECHNICAL DATA
The device belongs to the Modulex 3
line, and processes with a
numerical technique two phase voltages to
provide the automatic
synchronizati
on besides several
additional functions.
The user's interface is available locally through the presence of
a display unit and remotely through a LONWORKS
(TM)b
bus with
a control and monitoring system.
It is furthermore capable of dialoguing with a Personal Computer
through a special connector placed on the relay front and an
interface programme; this feature makes it easier and safer to
programme the setting and configure parameters and read the
set values, measurements and logged events; the programming
can also be performed from previously created file
s.
Control functions:

max. rated frequency/bar frequency deviation

max rated frequency/generator frequency deviation

max. rated voltage /bar voltage deviation

min. generator voltage value

max frequency difference

max. frequency voltage difference

max. phase difference

max. time for
parallel operat
ion execution

max. no.of parallel attempts

live bar/dead bar control

possibility of two settings groups - spare
and main settings
Measurements functions:

effect. Ub
bar voltage value expressed in
Ubn multiples

effect. Ug generator voltage value expressed in Ugn multiples

fb bar
frequency value expressed in
Hz

fg generator frequency value expresse
d in Hz

phase difference between bar voltage and Dp generator voltage
expressed in grades

logging of the last eight events with storage of
event type, date,
time, valuesof Ub,Ug, fb, fg, Dp
measurements, no. of parallel
attempts and parallel time

oscilloperturbography: recording, for a total time equalling 2.5
s, of the instant values (12 samples per period) of the inputs
measurements (Ub,Ug) and
of the
18 logical states among
which are digital inputs, end relays and leds

RCE: recording of the last 32 state changes (with relati
ve date
and time); they are only available through PC or network.
Other functions:

selection of rated frequency within 50Hz and 60Hz

selection of dialogue language (Italian, English, French and
Spanish)

self-monitor
ing with detailed
indication of the fault
and alarm
through LEDs and "normally ener
gized"
output relays (X6)

possibility of serial communication both with a local PC and on
LONWORKS
(TM)
bus

possibilit
y of assigning one or more functions of the device to
each output relay and each LED

possibility of setting all the output relays
to
"normally energized"
or "normally de-energized"

possibility of selecting, for each LED, the monostable or
bistable operating mode (stored)

optoinsulated digital inputs which can be programmed for
control and reset functions. These can be indi
vidually enabled
by normal energizing or de-energizing,
on front or o
on level.
They can also be used to control the continuity of the tripping
circuit

partial and total counter
s for each kind of event
MAIN SETTINGS
Main parameters
b
a
r
r
a
t
e
d
v
o
l
t
a
g
e
:
U
b
n
:
4
0
÷
1
3
0
V
g
e
n
e
r
a
t
o
r
r
a
t
e
d
v
o
l
t
a
g
e
:
U
g
n
:
4
0
÷
1
3
0
V
b
y
s
t
e
p
s
o
f
0
.
1
V
m
e
a
s
u
r
i
n
g
r
a
n
g
e
:
0
÷
2
0
0
V
op
er
.f
re
qu
en
cy
ra
ng
e
fo
r m
ea
su
re
me
nt
s
fo
r f
n
50
Hz
:
10 ÷ 6
0 Hz
ope
r.f
req
ue
nc
yc
a ra
nge
for
me
asu
rem
en
ts f
or f
n 60
Hz
:
10 ÷
72 Hz
p
e
r
m
a
n
e
n
t
o
v
e
r
l
o
a
d
i
n
g
:
2
0
0
V
o
v
e
r
l
o
a
d
i
n
g
f
o
r
1
0
s
:
2
5
0
V
burden with 100 V:
≤
0.6 VA per phase
Synchronization parameters
p
a
r
a
l
l
e
l
s
e
q
u
e
n
c
e
m
a
x
.
t
i
m
e
t
s
:
1
÷
3
0
m
i
n
b
y
s
t
e
p
s
o
f
1
m
i
n
m
a
x
.
n
u
m
b
e
r
o
f
p
a
r
a
l
l
e
l
a
t
t
e
m
p
t
s
N
s
:
1
÷
1
0
b
y
s
t
e
p
s
o
f
1
c
l
o
s
i
n
g
c
o
m
m
a
n
d
p
u
l
s
e
t
i
m
e
t
c
:
0
.
1
0
÷
9
.
9
9
s
c
l
o
s
i
n
g
d
e
l
a
y
t
r
:
0
.
0
2
÷
0
.
9
9
s
o
c
c
u
r
r
e
d
-
c
l
o
s
i
n
g
w
a
i
t
t
i
m
e
t
w
c
:
0
.
1
0
÷
9
.
9
9
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s
f
b
/
f
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
f
b
:
(
±
)
1
÷
5
%
f
g
/
f
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
f
g
:
(
±
)
1
÷
2
0
%
U
b
/
U
b
n
m
a
x
.
d
e
v
i
a
t
i
o
n
D
U
b
:
(
±
)
1
÷
5
%
U
g
/
U
g
n
m
i
n
.
g
e
n
e
r
a
t
o
r
v
o
l
t
a
g
e
D
U
g
:
7
0
÷
8
5
%
b
y
s
t
e
p
s
o
f
1
%
s
t
a
b
i
l
i
t
y
t
i
m
e
t
d
:
0
.
1
÷
1
0
.
0
s
b
y
s
t
e
p
s
o
f
0
.
1
s
m
a
x
.
f
r
e
q
u
e
n
c
y
d
i
f
f
e
r
e
n
c
e
D
f
:
(
±
)
0
.
0
2
÷
0
.
5
0
H
z
b
y
s
t
e
p
s
o
f
0
.
0
1
H
z
m
a
x
.
v
o
l
t
a
g
e
d
i
f
f
e
r
e
n
c
e
D
U
:
(
±
)
1
÷
3
0
%
b
y
s
t
e
p
s
o
f
1
%
m
a
x
.
p
h
a
s
e
d
i
f
f
e
r
e
n
c
e
D
p
:
(
±
)
1
÷
3
0
º
b
y
s
t
e
p
s
o
f
1
º
l
i
v
e
b
a
r
,
p
a
r
a
l
l
e
l
m
o
d
e
L
B
:
N
O
R
M
SUBSYNC
SUPERSYNC
d
e
a
d
b
a
r
D
B
:
O
F
F
ON
ON CHECK
d
e
a
d
b
a
r
l
e
v
e
l
U
d
:
0
.
1
0
÷
0
.
3
0
U
b
n
b
y
s
t
e
p
s
o
f
0
.
0
1
U
b
n
Frequency regulator parameters
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
n
g
m
o
d
e
C
P
f
:
C
O
N
T
-
P
U
L
S
E
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
p
u
l
s
e
t
i
m
e
t
f
p
u
:
0
.
1
0
÷
9
.
9
9
s
f
r
e
q
u
e
n
c
y
r
e
g
u
l
a
t
i
o
n
m
i
n
.
p
a
u
s
e
t
i
m
e
t
f
p
a
:
1
.
0
0 ÷
9
.
9
9
s
f
re
q
ue
n
c
y
r
eg
u
l
a
ti
on
m
a
x
.
pa
u
s
e
t
i
m
e
t
f
p
m
:
1
0
.0
0
÷
9
9
.
99
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s
l
o
a
d
p
u
l
s
e
L
P
:
O
N
-
O
F
F
l
o
a
d
p
u
l
s
e
t
i
m
e
t
l
p
:
0
.
1
0
÷
9
.
9
9
s
b
y
s
t
e
p
s
o
f
0
.
0
1
s