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LTSR15-NP_11 Datasheet, PDF (1/3 Pages) LEM – Current Transducer | |||
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Current Transducer LTSR 15-NP
IPN
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).
= 15 At
16196
Electrical data
IPN
Primary nominal current rms
IPM Primary current, measuring range
ÃP
Overload capability
VOUT Output voltage (Analog) @ IP
IP = 0
VREF Reference voltage (internal reference), RefOUT mode
Reference voltage (external reference), RefIN mode
G
Sensitivity
N S Number of secondary turns (± 0.1 %)
R L Load resistance
C L max Maximum capacitive loading
R IM Internal measuring resistance (± 0.5 %)
TCR IM Temperature coefficient of R IM
VC
Supply voltage (± 5 %)
IC
Current consumption @ VC = 5 V Typ
15
At
0 .. ± 48 1)
At
250
At
2.5 ± (0.625·IP/IPN) V
2.5 2)
V
2.5 3)
V
1.9 .. 2.7 4)
V
41.6
mV/A
2000
â¥2
kW
500
pF
83.33
W
< 50
ppm/K
5
V
28+IS5)+(VOUTR/L) mA
Accuracy - Dynamic performance data
Features
ââ Closed loop (compensated)
multirange current transducer
using the Hall effect
ââ Unipolar voltage supply
ââ Isolated plastic case recognized
according to UL 94-V0
ââ Compact design for PCB
mounting
ââ Incorporated measuring
resistance
ââ Extended measuring range
ââ Access to the internal voltage
reference
ââ Possibility to feed the transducer
reference from external supply.
Advantages
X
Accuracy @ IPN , TA = 25°C ± 0.2
%
Accuracy with R IM @ IPN , TA = 25°C ± 0.7
%
eL
Linearity error < 0.1
%
Max
TCVOUT Temperature coefficient of VOUT /VREF @ IP = 0
- 40°C .. + 85°C 64
ppm/K
TCG Temperature coefficient of G - 40°C .. + 85°C
50 6)
ppm/K
VOM Magnetic offset voltage @ IP = 0,
after an overload of 3 x IPN ± 0.5
5 x IPN ± 2.0
10 x IPN ± 2.0
TCVREF Temperature coefficient of internal VREF
@ IP = 0 - 10°C .. + 85°C 50
- 40°C .. - 10°C 100
mV
mV
mV
ppm/K
ppm/K
tra
tr
di/dt
Reaction time @ 10 % of IPN < 100
Response time to 90 % of IPN step < 400
di/dt accurately followed > 35
ns
ns
A/µs
BW Frequency bandwidth (0 .. - 0.5 dB) DC .. 100
kHz
(- 0.5 .. 1 dB) DC .. 200
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) VOUT is linked to VREF, by
conception the difference between these two nodes for IP = 0 is maximum ± 25 mV,
2.475 V < VOUT < 2.525 V. 3) In RefOUT mode at TA = 25°C, 2.475 V< VREF
< 2.525 V. The minimal impedance loading the ref pin should be > 220 kW. Internal
impedance = 600 W. 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) max ± 1 mA is
needed. 5) IS = IP/NS. 6) Only due to TCR IM.
ââ Excellent accuracy
ââ Very good linearity
ââ Very low temperature drift
ââ Optimized response time
ââ Wide frequency bandwidth
ââ No insertion losses
ââ High immunity to external
interference
ââ Current overload capability.
Applications
ââ AC variable speed drives and
servo motor drives
ââ Static converters for DC motor
drives
ââ Battery supplied applications
ââ Uninterruptible Power Supplies (UPS)
ââ Switched Mode Power Supplies
(SMPS)
ââ Power supplies for welding
applications.
Application Domain
ââ Industrial.
Page 1/3
110214/13
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
www.lem.com
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