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BETA Measuring
Three-Phase Measuring Devices
7
KT1 1 E-counters instabus KNX
11/26
Siemens ET B1 · 10/2008
11
■
Schematics
S0 interfaces
Connection with S0 interface
The short-circuit resistant optocoupler is operated at 5 ... 30 V DC.
The current must be selected within a range of max. 20 mA. The
pulse duration is 125 ms.
Instructions for the connection of transformer counters
In the case of cross-section reduction, a short-circuit resistant
cable is required for the power supply of terminals 2, 5 and 8,
depending on the fusing for phases L1, L2, L3. A 6 A fuse is
recommended for the line protection.
Direct connection 10 (63) A
Transformer connection 5 (6) A
L1
L2
L3
N
63
A
63
A
63
A
7
KT1 162
1 2 3 4 5 6
7 8 9 1011 12
1
3 4
6 7
9 10 12
+
N
L
+
I2_11979a
Tariff
230/400
V AC
230
V AC
2
x 5 - 30 V DC
7
KT1 165
1 2 3 4 5 6
1
3 4
6
11 11 11
2
5
8 7
9
N
L
7 8 9 10 1112
+ +
L1
L2
L3
N
6
A
I2_11980a
6
A 6A
k
l
k
l
k
l
K L
K
K
L
L
230
V AC
230/400
V AC
2
x 5 - 30 V
DC
Tariff
© Siemens AG 2008