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BETA Measuring
Single-Phase Measuring Devices
7
KT1 14 E-counters
12/3
Siemens ET B1 · 10/2008
12
■
Overview
E-counters serve the measurement of kWh in single-phase systems,
e.g. in industrial plants, offices and apartments in apartment
houses.
■
Benefits
•
The accuracy class 1 according to EN 50470-3 ensures that
you always have the correct measured value
•
The drum-type register in digit size 3.8 mm × 1.5 mm enables
easy reading
•
The short-circuit resistant pulse output protects the device if it
is assembled incorrectly.
■
Technical specifications
7
KT1 140
Standards
EN 62053-31, EN 50740-1, EN 50470-3
Supply
•
Rated control voltage U
n
V AC 230
•
Operating range
V
184 ... 276
•
Rated frequency
Hz
50/60
•
Operating frequency range
Hz
45 ... 65
•
Rated power dissipation P
v
W
0.6
Measuring inputs
•
Connection type
Direct
•
Voltage
V
230
•
Operating range voltage
V
184 ... 276
•
Current
A
75
•
Operating range current
Direct connection
A
0.025 ... 75
•
Minimum operational current
mA
25
•
Frequency
Hz
50/60
•
Operating frequency range
-
Distortion factor 3 %; symmetric sinus curve
Hz
45 ... 65
Overload capability
•
Voltage U
e
Continuous: phase/N
V
276
Short-time (1 s)
V
300
•
Current
I
e
Continuous
A
75
Short-time (10 ms)
A
2250
Display
•
Rate
1
rate
•
Active energy
Drum-type register H × W:
mm × mm 3.8 × 1.5
7-
digit with 1 decimal
0 ... 999999.9
Measuring accuracy
At 23 °C
±
1
°C
Active energy
Acc. to EN 50470-3
%
±
1
Safety
Acc. to EN 62052-11
•
Separation of current and voltage circuit
Electrical
•
Rated insulation voltage
V
300
•
Rated impulse withstand voltage
1.2/50
s
kV
6
•
Overvoltage category
4
Pulse output
•
S0 interface acc. to EN 62053-31
IR test output LED
Imp/kWh 1000
Terminals, output
Imp/kWh 10
Pulse duration
ms
100
±
5
Minimum interval between 2 pulses
ms
125
Required voltage
V DC 5 ... 30
Permissible current
mA
90
Terminals
•
Main current paths
±
screw (Pozidriv)
2
•
S0 interface/control terminals
Blade for slotted screw
mm 0.8 × 3.5
•
Conductor cross-sections,
main current paths
Rigid
mm
2
1.5 ... 35
Flexible, with end sleeve
mm
2
1.5 ... 35
•
Conductor cross-sections
S0 interface/control terminals
Rigid
mm
2
0.14 ... 2.5
Flexible, with end sleeve
mm
2
0.14 ... 1.5
Ambient conditions
•
Temperature
Storage
°C
-25 ...
+70
Operation
°C
-10 ...
+55
•
Relative air humidity
Storage
%
80
Operation
%
80
•
Maximum vibration
Sinus amplitude at 50 Hz
mm
±
0.075
•
Degree of protection
IP20, with connected conductors
© Siemens AG 2008