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BETA Monitoring
Monitoring of Electrical Values
7
LQ3 insulation monitors for medical premises
13/29
Siemens ET B1 · 10/2008
13
*
You can order this quantity or a multiple thereof.
■
Selection and ordering data
Version
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
Insulation monitors
With load current and temperature monitoring for
medical premises
300
6
B
7
LQ3 354
027 1
1
0.420
With load current and temperature monitoring of
medical premises with adjustable response value
of 50 … 500 k and output for 7LQ3 360 test and
signaling combination
300
8
}
7
LQ3 355
027 1
1
0.590
Test and signaling panels
N
For switchover devices, 24 V AC/DC 50/60 Hz
Surface mounting
B
7
LQ3 356
027 1
1
0.200
Flush mounting
B
7
LQ3 357
027 1
1
0.200
Test and signaling combinations for
insulation monitors
N
24
V AC, 50/60 Hz
B
7
LQ3 360
027 1
1
0.100
Current transformers AC 50A/5A Class 1
With base angle
230
}
7
LQ3 358
027 1
1
0.390
Voltage relays for the overvoltage monitoring of
medical premises
Single-phase against N, with test button,
switching thresholds: 0.9 × U
n
, 2 %
hysteresis
2
NO, 2 NC
230 4
230 4
C
5
TT3 411
027 1
1
0.220
Single, two or three-phase against N,
with asymmetry, reverse voltage and phase failure
detection, with N-conductor monitoring, and one
test button each for the phases,
switching thresholds: 0.9 × U
n
, 4 %
hysteresis
1
CO, 1 NO, 1 NC 230 4
230/400 4
C
5
TT3 412
027 1
1
0.230
© Siemens AG 2008