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BETA Monitoring
Monitoring of Electrical Values
7
LQ3 insulation monitors for medical premises
13/31
Siemens ET B1 · 10/2008
13
*
You can order this quantity or a multiple thereof.
Voltage relays
■
Schematics
Insulation monitors
Test and signaling panels
Test and signaling combination for insulation monitors
5
TT3 411
5
TT3 412
L3 L2 L1
N
24 11 14
23 31
32
12
N La
Lb
Y1 Y2 11 12
41 42
23 24
33 34
72
72
55
43
45
90
I2_13712
7
LQ3 354
7
LQ3 355
I2_13713
11 14 12 21 24 22 31 34 32 41 44 42 51 54 52 61 64 62
I2_13811a
11 14 12 21 24 22 31 34 32 41 44 42 51 54 52 61 64 62
X1 X2 X5
7
LQ3 355
LT1
LT2
i
P2
P1
PE
'
A2
A1
PE PT
L
L
'
k
Transformer protection
Insulation monitors
7
LQ3 356, 7LQ3 357
1
2 3
4 5 6
7 8
X5 X4 X3 X2 X1
A1 A2 SM PT2 PT1 X8 X7 X6
PT
QH/LT
+
I2_13987
7
LQ3 360
I2_13988
PT1
PT2
X1 X2
X5
Test
Receipt
ON
Ground fault
© Siemens AG 2008