443 / 582
BETA Measuring
Three-Phase Measuring Devices
7
KT1 2 current transformers
11/27
Siemens ET B1 · 10/2008
*
You can order this quantity or a multiple thereof.
11
■
Overview
This three-phase current transformer can be used in distribution
boards according to DIN 43880. The measuring leads are routed
vertically through the standard mounting rail.
This type of current transformer is suitable for supply systems or
outgoing conductors in connection with the installation of a 5TE8
switch or a 5TE1 disconnector, as the primary connecting leads
do not have to be interrupted.
The current transformer is designed for cables of up to 13 mm in
diameter, e.g. H07V-R with 50 mm
2
conductor cross-section.
■
Benefits
•
The current transformer has an accuracy class 1 in accordance
with EN 60044-1. This value is better than most measuring
devices in this area of application.
•
The versions designed for a transformer ratio of 60/5 A, 100/5 A
and 150/5 A enable an even broader range of applications.
■
Technical specifications
■
Selection and ordering data
■
Dimensional drawings
■
Schematics
Note:
Current transformers must not be operated with open terminals
as this can result in dangerously high voltages, which may result
in personal injuries and property damage. It also exposes the
transformer to thermal overload.
7
KT1 200
7
KT1 201
7
KT1 202
Standards
EN 60044-1
Secondary rated current strength
A
5
Accuracy class
Cl.
1
Rated power
VA 1.25
2.5
3.75
Rated frequency f
n
Hz
50/60
Thermal current limit
I
th
short-time
A
60
×
I
e
Thermal continuous current
A
1
×
I
e
Overcurrent limit factor
FS 5
Rated impulse withstand voltage U
imp
kV > 3
Creepage distances and clearances
mm > 3
Rated operational voltage U
e
V AC 720
Rated operational current
I
e
A AC 3 × 60
3
× 100
3
× 150
Terminals
±
screw (Pozidriv)
PZ 1
Conductor cross-sections
-
Rigid
mm
2
0.5 ... 4
-
Flexible, with end sleeve
mm
2
0.5 ... 2.5
Permissible ambient temperature
°C -5 ... +60
Resistance to climate
Acc. to EN 60068-1
20/60/4
U
e
I
e
I
sec
MW DT Order No.
Price
per PU
PG PU PS*/
P. unit
Weight
per PU
approx.
V AC A AC V DC
Unit(s) Unit(s) kg
Current transformers
720
3
× 60
5
6
B
7
KT1 200
027 1
1
0.460
3
× 100
B
7
KT1 201
027 1
1
0.460
3
× 150
B
7
KT1 202
027 1
1
0.465
7
KT1 200
7
KT1 201
7
KT1 202
105
45
90
I2_07809a
7
64
44
24
K/P
1
K/P
1
K/P
1
L/P
2
l k l k l
L/P
2
L/P
2
k
64
7
KT1 200
7
KT1 201
7
KT1 202
© Siemens AG 2008