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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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080715/9
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 current rms 1000 A
IPM Primary current, measuring range @ ± 24 V0 .. ± 1500 A
R M Measuring resistance @ TA = 70°C TA = 85°C
RM min RM max RM min RM max
with ± 15 V @ ± 1000 A max 018 015 Ω
@ ± 1200 A max 0 7 0 4 Ω
with ± 24 V @ ± 1000 A max 5 60.5 10 57.5 Ω
@ ± 1500 A max 524 10 21 Ω
ISN Secondary nominal current rms 200 mA
K N Conversion ratio 1 : 5000
VCSupply voltage (± 5 %) ± 15 .. 24 V
ICCurrent consumption (± 1 mA) 28 (@ ± 24 V) + ISmA
Accuracy - Dynamic performance data
XAccuracy @ IPN , TA = 25°C ± 0.4 %
εLLinearity error < 0.1 %
Typ Max
IOOffset current @ IP = 0, TA = 25°C ± 0.4 mA
IOM Magnetic offset current @ IP = 0 and specified RM,
after an overload of 3 x IPN ± 0.2 mA
IOT Temperature variation of IO- 10°C .. + 85°C ± 0.3 ± 0.5 mA
- 40°C .. - 10°C ± 0.8 mA
trResponse time 1) to 90 % of IPN step < 1 µs
di/dt di/dt accurately followed > 100 A/µs
BW Frequency bandwidth (- 1 dB) DC .. 150 kHz
General data
TAAmbient operating temperature - 40 .. + 85 °C
TSAmbient storage temperature - 45 .. + 100 °C
R S Secondary coil resistance @TA = 70°C 48 Ω
TA = 85°C 51 Ω
mMass 550 g
Standards EN 50178: 1997
Note : 1) With a di/dt of 100 A/µs.
Features
•Closed loop (compensated) current
transducer using the Hall effect
•Isolated 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.
Application Domain
•Industrial.
IPN =1000 A
16110
www.lem.com
080715/9 LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
page 2/3
Current Transducer LF 1005-S
Isolation characteristics
VdRms voltage for AC isolation test, 50 Hz, 1 mn 3.8 kV
VwImpulse withstand voltage 1.2/50 µs 16 kV
Min
dCp Creepage distance 20.6 mm
dCl Clearance distance 19.6 mm
CTI Comparative Tracking Index (Group IIIa)175
Application examples
According to EN 50178 and CEI 61010-1 standards and following conditions:
•Over voltage category OV 3
•Pollution degree PD2
•Non-uniform field
Safety
This transducer must be used in electric/electronic equipment with respect to
applicable standards and safety requirements in accordance with the manufacturer's
operating instructions.
Caution, risk of electrical shock
When operating the transducer, certain parts of the module can carry hazardous
voltage (eg. primary busbar, power supply).
Ignoring this warning can lead to injury and/or cause serious damage.
This transducer is a built-in device, whose conducting parts must be inaccessible
after installation.
A protective housing or additional shield could be used.
Main supply must be able to be disconnected.
EN 50178 CEI 61010-1
dCp, dCI, Rated isolation voltage Nominal voltage
Single isolation 1500 V 2000 V
Reinforced isolation 1000 V 1000 V
VW
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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080715/9
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
•Transducer fastening
Vertical position 2 holes ∅ 5.3 mm
2 M5 steel screws
Recommended fastening torque 4 Nm or 2.96 Lb. - Ft.
or 4 holes ∅ 4.2 mm
4 M4 steel screws
Recommended fastening torque 3.2 Nm or 2.37 Lb. - Ft.
or 4 holes ∅ 2.25 mm depth10 mm
4 x PT KA30 screws long 10 mm
Recommended fastening torque 0.9 Nm or 0.66 Lb. - Ft.
•Transducer fastening
Horizontal position 4 holes ∅ 5.3 mm
4 M5 steel screws
Recommended fastening torque 4 Nm or 2.96 Lb. - Ft.
or 4 holes ∅ 2.25 mm depth16 mm
4 x PT KA30 screws long 16 mm
Fastening torque, maxi 1 Nm or 0.74 Lb. - Ft.
•Primary through-hole 40.5 x 13 mm
or ∅ 38 mm
•Connection of secondary Molex 6410
3 Tin plated pins.
Dimensions LF 1005-S (in mm. 1 mm = 0.0394 inch)
Connection
Bottom view
Front view
Back view
Top view
