LTS25-NP_07 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

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).
I_PN = 25 At
Electrical data
16054
I_PN
I_PM
V_OUT
G
Primary nominal current rms
Primary current, measuring range
Output voltage (Analog) @ I_P
I_P = 0
Sensitivity
N _S Number of secondary turns (± 0.1 %)
R _L Load resistance
R_IM Internal measuring resistance (± 0.5 %)
TCR_IM Temperature coefficient of R _IM
V_C Supply voltage (± 5 %)
I_C
Current consumption @ V_C = 5 V
Typ
Accuracy - Dynamic performance data
25
At
0 .. ± 80
At
2.5 ± (0.625·I_P/I_PN) V
2.5 ¹⁾
V
25
mV/A
2000
≥2
kΩ
50
Ω
< 50
ppm/K
5
V
28+I_S2)+(V_OUT/R_L)m A
Features
• 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.
Advantages
X
Accuracy @ I , T = 25°C
PN A
ε_L
Accuracy with R _IM @ I_PN , T_A = 25°C
Linearity error
TCV_OUT Temperature coefficient of V_OUT @ I_P = 0 - 10°C .. + 8 5°C
- 40°C .. - 10°C
TCG Temperature coefficient of G
- 40°C .. + 85°C
V
Magnetic offset voltage @ I = 0,
OM
P
after an overload of 3 x I_PN
5xI
PN
10 x I_PN
t_ra
t
r
di/dt
Reaction time @ 10 % of I_PN
Response time to 90 % of I step
PN
di/dt accurately followed
BW Frequency bandwidth (0 .. - 0.5 dB)
(- 0.5 .. 1 dB)
± 0.2
± 0.7
< 0.1
Typ Maxi
50 100
150
50 ³⁾
± 0.5
± 2.0
± 2.0
< 100
< 400
> 60
DC .. 100
DC .. 200
%
%
%
ppm/K
ppm/K
ppm/K
mV
mV
mV
ns
ns
A /µ s
kHz
kHz
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
Insulating material group
- 40 .. + 85
°C
- 40 .. + 100 °C
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) _{IS= IP/N S}
3) _{Only due to TCR IM}
4) _{Specification according to IEC 61000-4-3 are not guaranteed between}
180 and 220 MHz.
• 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.
Copyright protected.
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070129/19
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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