LTS25-NP_11 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

Current Transducer LTS 25-NP
For the electronic measurement of currents: DC, AC, pulsed,
mixed with galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
I_PN = 25 At
16054
Electrical data
Features
I_PN
Primary nominal current rms
I_PM
Primary current, measuring range
V_OUT Output voltage (Analog) @ I_P
I_P = 0
G
Sensitivity
N_S
R_L
R _IM
TCR _IM
V_C
I_C
Number of secondary turns (± 0.1 %)
Load resistance
Internal measuring resistance (± 0.5 %)
Temperature coefficient of R _IM
Supply voltage (± 5 %)
Current consumption @ V_C = 5 V
Typ
25
At
0 .. ± 80
At
2.5 ± (0.625·I_P/I_PN)V
2.5 ¹⁾
V
25 mV/A
2000
≥ 2 kW
50
W
< 50 ppm/K
5
V
28+I_S²⁾+(V_OUT/R_L) mA
●● Closed loop (compensated) multi-
range current transducer using
the Hall effect
●● Unipolar voltage supply
●● Isolated plastic case recognized
according to UL 94-V0
●● Compact design for PCB
mounting
●● Incorporated measuring
resistance
●● Extended measuring range.
Accuracy - Dynamic performance data
Advantages
X
Accuracy @ I_PN, T_A = 25°C
ε
L
Accuracy with R_IM @ I_PN, T_A = 25°C
Linearity error
± 0.2
%
± 0.7
%
< 0.1
%
Typ Max
TCV_OUT Temperature coefficient of V_OUT @ I_P= 0 - 10°C .. + 85°C 50 100 ppm/K
- 40°C .. - 10°C 150 ppm/K
TCG Temperature coefficient of G - 40°C .. + 85°C
50 ³⁾ ppm/K
V_OM
Magnetic offset voltage @ I_P = 0,
after an overload of 3 x I_PN
± 0.5 mV
5 x I_PN ± 2.0 mV

10 x I_PN ± 2.0 mV
t_ra
t_r
di/dt
Reaction time @ 10 % of I_PN
Response time to 90 % of I_PN step
di/dt accurately followed
< 100
< 400
> 60
ns
ns
A/µs
●● 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
BW Frequency bandwidth (0 .. - 0.5 dB)
DC .. 100 kHz
●● Battery supplied applications

(- 0.5.. 1 dB)
DC .. 200 kHz
●● Uninterruptible Power Supplies
(UPS)
General data
●● Switched Mode Power Supplies
(SMPS)
T_A
Ambient operating temperature
T_S
Ambient storage temperature
m
Mass
Standards
- 40 .. + 85
°C
- 40.. + 100 °C
10
g
EN 50178: 1997
●● Power supplies for welding
applications.
Application domain

Notes: ¹⁾ Absolute value @ T_A = 25°C, 2.475 < V_OUT < 2.525
2) _{IS = IP/NS}
3) _{Only due to TCRIM.}
IEC 60950-1: 2001
●● Industrial.
Page 1/3
110209/22
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
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