Current Transducer LF 1005-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 1000 A
IPPrimary current, measuring range 0 .. ± 1500 A
R M Measuring resistance @ TA = 70°C TA = 85°C
RM min RM max RM min RM max
with ± 18 V @ ± 1000 A max 040 037 Ω
@ ± 1500 A max 012 0 9 Ω
with ± 24 V @ ± 1000 A max 20 66 33 63 Ω
@ ± 1500 A max 20 30 33 33 1) Ω
ISN Secondary nominal r.m.s. current 200 mA
K N Conversion ratio 1 : 5000
VCSupply voltage (± 5 %) ± 18 .. 24 V
ICCurrent consumption 20 (@ ± 24 V) + ISmA
VdR.m.s. voltage for AC isolation test, 50 Hz, 1 mn 3kV
Accuracy - Dynamic performance data
X G Overall accuracy @ IPN , TA = 25°C ± 0.4 %
εLLinearity < 0.1 %
Typ Max
IOOffset current @ IP = 0, TA = 25°C ± 0.4 mA
IOT Thermal drift of IO- 10°C .. + 85°C ± 0.3 ± 0.5 mA
trResponse time 2) @ 90 % of IPN < 1 µs
di/dt di/dt accurately followed > 100 A/µs
fFrequency bandwidth (- 1 dB) DC .. 150 kHz
General data
TAAmbient operating temperature - 10 .. + 85 °C
TSAmbient storage temperature - 25 .. + 100 °C
R S Secondary coil resistance @TA = 70°C 43 Ω
TA = 85°C 46 Ω
mMass 500 g
Standards
3) EN 50178
Notes : 1) Measuring range limited to ± 1400 A max
2) With a di/dt of 100 A/µs
3) 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 =1000 A
990526/2
LEM Components www.lem.com
Preliminary
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 2 holes ∅ 6.3 mm
or 4 holes ∅ 5.3 mm
or 4 holes ∅ 4.2 mm
or 4 x PT KA30 screws
depth 10 mm
or 4 x PT KA30 screws
depth 16 mm
•Primary through-hole 40.5 x 40.5 mm
•Connection of secondary Molex 5045-03/AG
Dimensions LF 1005-S (in mm. 1 mm = 0.0394 inch)
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Secondary terminals
Pin +:supply voltage +18 .. 24 V
Pin M:measure
Pin -:supply voltage -18 .. 24 V
Connection
Bottom view
Front view Back view
Top view
