Current Transducer LF 2005-S
For the electronic measurement of currents : DC, AC, pulsed...,
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 2000 A
IPPrimary current, measuring range @ ± 24 V 0 .. ± 3000 A
R M Measuring resistance RM min RM max
with ± 15 V @ ± 2000 A max 0 8
@ ± 2200 A max 0 5
with ± 24 V @ ± 2000 A max 529
@ ± 3000 A max 511
ISN Secondary nominal r.m.s. current 400 mA
K N Conversion ratio 1 : 5000
VCSupply voltage (± 5 %) ± 15 .. 24 V
ICCurrent consumption 33 (@ ± 24 V) + ISmA
VdR.m.s. voltage for AC isolation test, 50 Hz, 1 mn 6kV
Accuracy - Dynamic performance data
X G Overall accuracy @ IPN , TA = 25°C ± 0.3 %
εLLinearity < 0.1 %
Typ Max
IOOffset current @ IP = 0, TA = 25°C ± 0.5 mA
IOT Thermal drift of IO- 25°C .. + 70°C ± 0.2 ± 0.4 mA
trResponse time 1) @ 90 % of IPN < 1 µs
di/dt di/dt accurately followed > 50 A/µs
fFrequency bandwidth (- 1 dB) DC .. 100 kHz
General data
TAAmbient operating temperature - 25 .. + 70 °C
TSAmbient storage temperature - 40 .. + 85 °C
R S Secondary coil resistance @ TA = 70°C 25
mMass 1.5 kg
Standards 2) EN 50178
Notes : 1) With a di/dt of 100 A/µs
2) A list of corresponding tests is available.
Features
Closed loop (compensated) current
transducer using the Hall effect
Insulated plastic case recognized
according to UL 94-V0.
Advantages
Excellent accuracy
Very good linearity
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.
IPN =2000 A
020708/5
LEM Components www.lem.com
Secondary terminals
Pin +:supply voltage +15 .. 24 V
Pin M:measure
Pin -:supply voltage -15 .. 24 V
Connection
Remarks
IS is positive when IP flows in the direction of the arrow.
Temperature of the primary conductor should not exceed
100°C.
Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole.
This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
Mechanical characteristics
General tolerance ± 0.5 mm
Fastening transducer 4 holes 6.5 mm
Flat or vertical position 4 screw M6 steel
Fastening torque 5.5 Nm or 4.05 Lb. - Ft.
Primary through-hole 60.5 x 60.5 mm
Connection of secondary S3P-VH
Dimensions LF 2005-S (in mm. 1 mm = 0.0394 inch)
Front view Left view
Top view
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.