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BETA Monitoring
Monitoring of Electrical Values
5
TT3 voltage relays
13/5
Siemens ET B1 · 10/2008
*
You can order this quantity or a multiple thereof.
13
■
Selection and ordering data
Contacts
U
e
I
e
U
c
MW DT Order No.
Price
per PU
PG PU PS*/
P. unit
Weight
per PU
approx.
V AC A V AC
Unit(s) Unit(s) kg
Overvoltage relays
For the monitoring of 1, 2 or 3 phases against N,
switching thresholds:
0.9 ... 1.3
× U
c
, 4 %
adjustable hysteresis
2
CO
230 4
230/400 2
B
5
TT3 194
027 1
1
0.150
For monitoring of 3 phase against N,
with N-conductor monitoring,
switching thresholds:
0.9 ... 1.3
× U
c
, 4 %
adjustable hysteresis
2
CO
230 4
230/400 2
B
5
TT3 195
027 1
1
0.150
Undervoltage relays
For the monitoring of 1, 2 or 3 phases against N,
with phase failure detection,
switching thresholds:
0.7
and 0.9 × U
c
,
not adjustable
1
CO
230 4
230/400 1
}
5
TT3 400
027 1
1
0.065
For the monitoring of safety light devices of 1, 2 or
3
phases against N,
with phase failure detection,
switching thresholds:
0.85
and 0.95 × U
c
,
not adjustable
1
CO
230 4
230/400 1
}
5
TT3 401
027 1
1
0.065
For the monitoring of 1, 2 or 3 phases against N,
with phase failure detection,
switching thresholds:
0.7
and 0.9 × U
c
,
not adjustable
2
CO
230 4
230/400 2
}
5
TT3 402
027 1
1
0.110
For the monitoring of 1, 2 or 3 phases against N,
with phase failure detection,
switching thresholds:
0.9 ... 0.95
× U
c
, 5 %
adjustable hysteresis
2
CO
230 4
230/400 2
A
5
TT3 403
027 1
1
0.110
For the monitoring of 3 phases against N,
with asymmetry, reverse voltage and phase failure
detection, with N-conductor monitoring,
switching thresholds:
0.7
and 0.9 × U
c
,
not adjustable
2
CO
230 4
230/400 2
B
5
TT3 404
027 1
1
0.110
For undervoltage monitoring of safety light devices
of 3-phases against N, with asymmetry,
reverse voltage and phase failure detection,
with N-conductor monitoring,
switching thresholds:
0.85
and 0.95 × U
c
,
not adjustable
2
CO
230 4
230/400 2
B
5
TT3 405
027 1
1
0.110
For the monitoring of 3 phases against N,
with asymmetry, reverse voltage and
phase failure detection,
with N-conductor monitoring,
switching thresholds:
0.7 ... 0.95
× U
c
, 5 %
adjustable hysteresis
2
CO
230 4
230/400 2
B
5
TT3 406
027 1
1
0.110
Short-time relays
For monitoring of short-time failure detection 20 ms
of 1, 2 or 3 phases against N,
with phase failure detection and
N-conductor monitoring,
switching thresholds:
0.8 ... 0.85
× U
c
,
not adjustable
2
CO
230 4
230/400 2
B
5
TT3 407
027 1
1
0.110
© Siemens AG 2008