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BETA Measuring
Three-Phase Measuring Devices
7
KT1 31, 7KT1 34, 7KT1 35 multicounters
11/9
Siemens ET B1 · 10/2008
11
■
Technical specifications
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
Supply
•
Rated control supply voltage U
c
V AC 230
•
Operating range
× U
c
0.8 ... 1.2
•
Rated frequency
Hz
50
•
Frequency ranges
Hz
45 ... 65
•
Rated power dissipation P
v
VA
10
Overload capability
•
Voltage
Continuous: phase/phase
V
480
1
second: phase/phase
V
800
Continuous: phase/N
V
276
1
second: phase/N
V
460
•
Current
Continuous
A
76
6
0.5
s
A
--
110
10
ms
A
2000
--
Measuring inputs
•
Connection type
Direct
Transformer /5 A
•
Voltage U
e
Phase/phase
V
400
Phase/N
V
230
-
Operating range voltage
Phase/phase
V
87 ... 480
Phase/N
V
50 ... 276
•
Current
I
e
A
63
5
-
Operating range current
A
0.3 ... 63
0.012 ... 5
•
Transformer current
Primary current of the transformer
A
--
5 ... 5000
Smallest input step
A
--
5
•
Frequency
Hz
50
-
Operating frequency range
Hz
45 ... 65
Display
•
Connection errors
Inverted phases
Err
•
Voltage: 3 displays, 3-digit
Delta L1 – L2, L2 – L3, L3 – L1
V AC 87 ... 480
Star L1/N – L2/N – L3/N
V AC 50 ... 276
Voltage > 480/276 V
H H H
Voltage < 87/50 V
L L L
•
Current:
L1 – L2 – L3 – N-conductor
0.3 ... 76
A
0.1
A ... 1.2 kA or
0.1 ... 6
A
× transformer conversion ratio
For current > 76 A or 6 A
× transformer conversion ratio
H H H
For current < 0.3 A or 0.012 A
× transformer conversion ratio
O O O
•
Frequency: 1 display, 3-digit
L
Hz
45.0 ... 65.0
•
Active power: 3 displays, 3-digit
L1 – L2 – L3,
display with floating decimal point
W, kW
or MW
0 ... 999
•
Active power: 3 3 display, 3-digit,
3
of 7 digits + display
Import or export
L,
display with floating decimal point
W, kW
or MW
0 ... 999
•
Reactive power: 1 display,
3
of 7 digits + capacitive
or inductive load
L,
display with floating decimal point
var, kvar or
Mvar
0 ... 999
•
Apparent power: 3 displays, 3-digit
L1 – L2 – L3, L
Display with floating decimal point
VA, kVA or
MV
0 ... 999
•
Apparent power: 5 displays, 3-digit,
adjustable
L,
display with floating decimal point
VA, kVA or
MV
0 ... 999
•
Active energy: 1 display,
7-
digit display
Import or export,
+ display rate 1 or 2
L,
display with floating decimal point
Wh, kWh or
MW
0 ... 9999999
or 0 ... 999
•
Reactive energy: 1 indicator,
7-
digit + capacitive or inductive load
L,
display with floating decimal point
varh, kvarh
or Mvarh
0 ... 9999999
or 0 ... 999
•
Apparent energy: 5 displays, 3-digit,
adjustable rate
L,
display with floating decimal point
VAh, kVAh
or MVh
0 ... 9999999
or 0 ... 999
•
p.f.: 3 displays, 3-digit
L1 – L2 – L3,
display with floating decimal point
0.01 ... 1.00
•
p.f.: 4 displays, 3-digit,
adjustable
L
0.01 ... 1.00
© Siemens AG 2008