LTSR15-NP Datasheet, PDF (1/3 Pages) LEM – Current Transducer

Current Transducer LTSR 15-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 = 15 A
16196
Electrical data
I_PN
Primary nominal current rms
I_PM
Primary current, measuring range
V_OUT Output voltage (Analog) @ I_P
I =0
P
V_REF Reference voltage (internal reference), refout mode
Reference voltage (external reference), refin mode
G
Sensitivity
N
Number of secondary turns (± 0.1 %)
S
R _L Load resistance
C
Maximum capacitive loading
Lmaxi
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
X
Accuracy @ I , T = 25°C
PN A
ε
Accuracy with R _IM @ I_PN , T_A = 25°C
Linearity error
L
TCV Temperature coefficient of V /V @ I = 0
OUT
OUT REF
P
- 40°C .. + 85°C
TCG Temperature coefficient of G
- 40°C .. + 85°C
V_OM Magnetic offset voltage @ I_P = 0
after an overload of 3 x I_PN
5xI
PN
10 x I_PN
TCV Temperature coefficient of internal V
REF
REF
@ I_P = 0 - 10°C .. + 85°C
- 40°C .. - 10°C
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)
15
At
0 .. ± 48 ¹⁾
At
2.5 ± (0.625·I_P/I_PN) V
2.5 ²⁾
V
2.5 ³⁾
V
1.9 .. 2.7 ⁴⁾
V
41.6
mV/A
2000
≥2
kΩ
500
pF
83.33
Ω
< 50
ppm/K
5
V
28 +I_S5)+(V_OUT/R_L) m A
± 0.2
%
± 0.7
%
< 0.1
%
Maxi
64
50 ⁶⁾
ppm/K
ppm/K
± 0.5
mV
± 2.0
mV
± 2.0
mV
50
100
< 100
< 400
> 35
DC .. 100
DC .. 200
ppm/K
ppm/K
ns
ns
A /µ s
kHz
kHz
Notes: ¹) Only in refout mode or with external REF less than 2.525 V and greater than
2.475 V. For external REF out of these limits see leaflet. ²⁾ V_OUT is linked to V_REF,
by conception the difference between these two nodes for I_P = 0 is maximum
± 25 mV, 2.475 V < V_OUT < 2.525 V. ³⁾ In Refout mode at T_A = 25°C, 2.475 V< V_REF
< 2.525 V. The minimal impedance loading the ref pin should be > 220 kΩ. Internal
impedance = 600 Ω. For most applications you need to buffer this output to feed it
into an ADC for example. ⁴⁾ To overdrive the REF (1.9 V .. 2.7 V) maxi ± 1 mA is
needed.
5) _{IS= IP/N S.}
6)
Only
due
to
TCR
.
IM
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
• Access to the internal voltage
reference
• Possibility to feed the transducer
reference from external supply.
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
Page 1/3
070307/12
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
w w w .lem.com