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LTS25-NP Datasheet(PDF) 1 Page - LEM

Part No. LTS25-NP
Description  Current Transducer
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Maker  LEM [LEM]
Homepage  http://www.lem.co.jp/HQ/en
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LTS25-NP Datasheet(HTML) 1 Page - LEM

   
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
060227/17
Current Transducer LTS 25-NP
For the electronic measurement of currents : DC, AC, pulsed, mixed,
with a galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
Electrical data
I
PN
Primary nominal r.m.s. current
25
At
I
P
Primary current, measuring range
0 .. ± 80
At
V
OUT
Analog output voltage @ I
P
2.5 ± (0.625
·I
P/IPN) V
I
P = 0
2.5 1)
V
N
S
Number of secondary turns (± 0.1 %)
2000
R
L
Load resistance
≥ 2
k
R
IM
Internal measuring resistance (± 0.5 %)
50
TCR
IM
Thermal drift of R
IM
< 50
ppm/K
V
C
Supply voltage (± 5 %)
5
V
I
C
Current consumption @ V
C = 5 V
Typ
28+I
S
2)+(V
OUT/RL) mA
Accuracy - Dynamic performance data
X
Accuracy @ I
PN , TA = 25°C
± 0.2
%
Accuracy with R
IM @ IPN , TA = 25°C
± 0.7
%
ε
L
Linearity error
< 0.1
%
Typ
Max
TCV
OUT Thermal drift of VOUT @ IP = 0
- 10°C .. + 85°C
50
100
ppm/K
- 40°C .. - 10°C
150
ppm/K
TC
ε
G
Thermal drift of the gain
- 40°C .. + 85°C
50 3)
ppm/K
V
OM
Residual voltage @ I
P = 0,after an overload of 3 x IPN
± 0.5
mV
5 x I
PN
± 2.0
mV
10 x I
PN
± 2.0
mV
t
ra
Reaction time @ 10 % of I
PN
< 100
ns
t
r
Response time @ 90 % of I
PN
< 400
ns
di/dt
di/dt accurately followed
> 60
A/µs
f
Frequency bandwidth (0 .. - 0.5 dB)
DC .. 100
kHz
(- 0.5 .. 1 dB)
DC .. 200
kHz
General data
T
A
Ambient operating temperature
- 40 .. + 85
°C
T
S
Ambient storage temperature
- 40 .. + 100
°C
Insulating material group
III a
m
Mass
10
g
Standards 4)
EN 50178 : 1997
IEC 60950-1: 2001
Notes : 1) Absolute value @ T
A = 25°C,
2.475 < V
OUT < 2.525
2) I
S= IP/N S
3) Only due to TCR
IM
4) Specification according to IEC 1000-4-3 are not guaranteed between
180 and 220 MHz.
Features
Closed loop (compensated) multi-
range current transducer using the
Hall effect
Unipolar voltage supply
Insulated plastic case recognized
according to UL 94-V0
Compact design for PCB mounting
Incorporated measuring resistance
Extended measuring range.
Advantages
Excellent accuracy
Very good linearity
Very 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.
Application domain
Industrial.
I
PN
= 25 At
Copyright protected.
16054
TOPE Co., Ltd.
Tel: (02) 8228-0658
Fax: (02) 8228-0659
http://www.sensor.tw
e-mail: tope@ms1.hinet.net


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