IPN = 50 ACurrent Transducer LAS 50-TP
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).
Electrical data
IPN Primary nominal r.m.s. current 50 A
IPPrimary current, measuring range 0 .. ± 150 A
VOUT Analog output voltage @ IPV REF ± (0.625·IP/IPN)V
IP = 0 V REF ± 0.025 V
V REF Reference voltage - Output 2.5 ± 0.025 V
V REF Load impedance 1 M
R L Output load resistance 2 k
ROUT Output internal resistance < 20
C L Max. output capacitive load 1nF
VCSupply voltage (± 5 %) 5V
ICCurrent consumption @ VC = 5 V typ 17 mA
VdR.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn 5kV
VeR.m.s. voltage for partial discharge extinction @ 10 pC 2kV
VwImpulse withstand voltage 1.2/50 µs 8kV
Accuracy - Dynamic performance data
XAccuracy 1) @ IPN , TA = 25°C < ± 1 %
εLLinearity error 0 .. IPN 2) < 0.7 %
Typ Max
TCVOUT Thermal drift of VOUT @ IP = 0 - 40°C .. + 85°C 80 120 ppm/K
TCVOUT / VREF Thermal drift of VOUT / VREF @ IP = 0 - 40°C .. + 85°C 50 80 ppm/K
TCεGThermal drift of the gain - 40°C .. + 85°C 150 300 ppm/K
VOM Residual voltage @ IP = 0, after an overload of 2 x IPN DC ± 5 mV
tra Reaction time @ 10 % of IPN < 200 ns
trResponse time @ 90 % of IPN < 500 ns
di/dt di/dt accurately followed > 100 A/µs
Output noise without external filter < 10 mVpp
fFrequency bandwidth (- 1 dB) DC .. 100 kHz
General data
TAAmbient operating temperature - 40 .. + 85 °C
TSAmbient storage temperature - 40 .. + 100 °C
mMass 20 g
Insulating material group I
Standards EN 50178 (97.10.01)
All Data are given with a RL = 10 k
Notes :1) Excluding electrical, magnetic offsets and linearity
2) Including magnetic offset.
Features
Current transducer using
Eta-technology
Unipolar voltage supply
Insulated plastic case recognized
according to UL 94-V0
Compact design for PCB mounting
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.
Copyright protected.
040402/10
LEM Components www.lem.com
Front view
[m]
Dimensions LAS 50-TP (in mm. 1 mm = 0.0394 inch)
Output Voltage - Primary CurrentMechanical characteristics
General tolerance ± 0.2 mm
Fastening & connection of primary 6 pins 1.4 x 1 mm
Recommended PCB hole 2 mm
Fastening & connection of secondary 4 pins 0.7 x 0. 6 mm
Recommended PCB hole 1.2 mm
Remarks
VOUT is positive when IP flows from terminals "IN" to
terminals "OUT".
This is a standard model. For different versions
please contact us
Temperature of the primary conductor should not exceed
100°C.
Bottom view
Left view
Connection
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Number of
primary turns Primary current Nominal output
voltage Primary
resistance Primary
insertion
inductance
Nominal Maximal
IPN [A] IP [A] VOUT [V] RPLP [µH]
150 150 VREF ± 0.625 0.12 0.008
- IPmax - IPN 0 IPN IPmax
5
4.375
3.125
2.5 1.875
0.625 IP [ A ]
VOUT [ V ]