
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 Ω
@ ± 2200 A max 0 5 Ω
with ± 24 V @ ± 2000 A max 529 Ω
@ ± 3000 A max 511 Ω
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 Ω
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