Current Transducer CT 10-T
For very accurate measurements of currents : DC, AC, pulsed...,
with a galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
Electrical data
I
P N
Primary nominal r.m.s. current
10
A
I
P
Primary current, measuring range
0 .. 15
A
V
OUT
Analog output voltage
5
V
K
N
Conversion ratio
10 A / 5 V
R
L
Load resistance
>
500
C
L
Capacitance loading
5
nF
t
C
Output short-circuit duration
1)
s
V
C
Supply voltage ( 5 %)
15
V
I
C
Current consumption
90 + V
OUT
/
R
L
mA
V
d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
6
kV
Accuracy - Dynamic performance data
X
G
Overall accuracy @ I
PN
- 25C .. + 70C
0.1
%
Typ
Max
V
O
Offset voltage @ I
P
= 0
T
A
= 25C
0.4
mV
- 25C .. + 70C
0.6
mV
f
Frequency bandwidth (- 3 dB) @ 10 % of I
PN
DC .. 500
kHz
General data
T
A
Ambient operating temperature
- 25 .. + 70
C
T
S
Ambient storage temperature
- 40 .. + 85
C
m
Mass
670
g
Standards
2)
EN 50178
Notes :
1)
If the short-circuit has a duration more than 1 s, the primary current of
the supply voltage must be interrupted for a short time to restore the
transducer to proper working order. The internal protection is done by
PTC resistors
2)
A list of corresponding tests is available
Features
Closed loop (compensated) current
transducer
Insulated plastic case recognized
according to UL 94-V0
Patent pending.
Advanced features
f
= 500 kHz
X
G
= 0.1 % (- 25C .. + 70C).
Advantages
Excellent accuracy
Very good linearity
Low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
High immunity to external
interference
Current overload capability.
Applications
AC variable speed drives and servo
motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies
(UPS)
Switched Mode Power Supplies
(SMPS)
Power supplies for welding
applications.
I
PN
= 10
A
980814/4
LEM Components
w w w .lem.com
Preliminary
Remarks
V
OUT
is positive when I
P
flows in the direction of the arrow.
This transducer induces into the primary circuit a square
wave of 35 mV amplitude (frequency
220 Hz). This voltage
can induce an AC current in the primary if the primary
impedance is low.
This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
Mechanical characteristics
General tolerance
0.3 mm
Fastening
2 x M5 screws
Connection of primary
M5 threaded studs
Connection of secondary
M5 threaded studs
Fastening torque
2.2 Nm or 1.62 Lb - Ft
Dimensions CT 10-T
(in mm. 1 mm = 0.0394 inch)
Secondary terminals
Terminal + : supply voltage + 15 V
Terminal M : measure
Terminal 0 : 0 V
Terminal - : supply voltage - 15 V
Connection
Front view
Top view
Left view
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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