LTS25-NP 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
Primary nominal r.m.s. current
I_P
Primary current, measuring range
V_OUT Analog output voltage @ I_P
I_P = 0
N _S Number of secondary turns (± 0.1 %)
R _L Load resistance
R_IM Internal measuring resistance (± 0.5 %)
TCR_IM Thermal drift 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
2000
≥2
kΩ
50
Ω
< 50
ppm/K
5
V
28+I_S2)+(V_OUT/R_L)m A
X
Accuracy @ I_PN , T_A = 25°C
Accuracy with R @ I , T = 25°C
ε_L
IM
PN A
Linearity error
TCV Thermal drift of V @ I = 0
OUT
OUT
P
- 10°C .. + 85°C
- 40°C .. - 10°C
ε TC Thermal drift of the gain
G
- 40°C .. + 85°C
V_OM Residual voltage @ I_P = 0,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 @ 90 % of I
PN
di/dt accurately followed
f
Frequency bandwidth (0 .. - 0.5 dB)
(- 0.5 .. 1 dB)
General data
± 0.2
%
± 0.7
%
< 0.1
%
Typ Max
50 100 ppm/K
150 ppm/K
50 ³⁾ ppm/K
± 0.5
mV
± 2.0
mV
± 2.0
mV
< 100
< 400
> 60
DC .. 100
DC .. 200
ns
ns
A /µ s
kHz
kHz
T_A
Ambient operating temperature
T
Ambient storage temperature
S
Insulating material group
m
Mass
Standards ⁴⁾
- 40 .. + 85
°C
- 40 .. + 100 °C
III a
10
g
EN 50178 : 1997
IEC 60950-1: 2001
Notes : ¹⁾ Absolute value @ T_A = 25°C, 2.475 < V_OUT < 2.525
2) _{I = I /N}
SPS
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.
Copyright protected.
LEM
TOPE Co., Ltd.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
060227/17
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www.lem.com
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