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BETA Measuring
Three-Phase Measuring Devices
7
KT1 31, 7KT1 34, 7KT1 35 multicounters
11/10
Siemens ET B1 · 10/2008
11
Display (contd.)
•
Transformer primary current
Only if set
A
--
5 ... 5000
•
Transformer secondary current
Only if set
A
--
5
•
Temperature
°C
0 ...
+99
•
Display period
/
s
2
•
Storage of setting and energy values
EEPROM
S0 interfaces
Acc. to IEC 62053-31
Class A
•
Terminal output
For direct connection 63 A, adjustable Imp/kWh 10 – 1 – 0.1 – 0.01
– 0.001
--
Depending on the transformer factor,
adjustable
Imp/kWh --
10 – 1 – 0.1 – 0.01 – 0.001
•
Pulse duration
ms
125 ... 300
•
Minimum interval between 2 pulses
ms
300
•
Required voltage
V DC 5 ... 30
•
Current ON/OFF
mA
10 ... 27/0 ... 2
Measuring accuracy
•
Voltage
%
1
•
Current
%
1
•
Power outputs
%
2
•
Active energy
Acc. to IEC 62053-21
Class 2
•
Reactive energy
Acc. to IEC 62053-23
Class 2
•
p.f.
%
2
•
Frequency
%
1
Safety acc. to EN 61010-1
•
Degree of pollution
2
•
Overvoltage category
II
•
Operating voltage category
V
600
•
Clearances
mm
3.0
•
Creepage distances
In device
mm
4.3
On printed boards (not installed)
mm
3.0
•
Test pulse voltage
1.2/50
s
kV
4
•
Test voltage
50
Hz, 1 min
kV
2.2
Terminals
•
Main current paths
± screw (Pozidriv)
2
1
•
Supply and control terminals
Blade for slotted screw
mm × mm 0.4 × 2.5
•
Conductor cross-sections,
main current paths
Rigid, maximum
mm
2
1
× 25 or
2
× 16
1
× 6 or
2
× 4
Rigid, minimum
mm
2
1
× 1.5
•
Conductor cross-sections
Supply and control terminals
Rigid, maximum
mm
2
1
× 6 or
2
× 4
Flexible, with end sleeve, minimum mm
2
1
× 0.75
Ambient conditions
•
Temperature
°C
0 ...
+55
•
Relative humidity
%
80
•
Vibrations
Sinus amplitude at 50 Hz
mm ±0.25
•
Degree of protection
Acc. to EN 60529
IP20, with connected conductors
-
Front panel, 96 mm × 96 mm
--
IP54
•
Safety class
Acc. to EN 61010-1
II
Multicounters without communication interface
7
KT1 310
7
KT1 311
7
KT1 312
Multicounters with RS485 interface (Modbus RTU, for LAN couplers)
7
KT1 340
7
KT1 341
7
KT1 342
Multicounters with PROFIBUS DP V0 interface
7
KT1 350
7
KT1 351
7
KT1 352
Standards
EN 61010-1, EN 62053-21, -23, -31
© Siemens AG 2008