LF2005-S_11 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

Current Transducer LF 2005-S
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
I_PN = 2000 A
Electrical data
16103
I_PN Primary nominal current rms
2000
A
I_PM Primary current, measuring range @ ± 24 V
0 .. ± 3000
A
R_M Measuring resistance @ T_A = 70 °C
T_A = 85 °C

R_M R _{min M max}
R R _{M min M max}
with ± 15 V @ ± 2000 A _max 0 8
07
Ω
@ ± 2200 A _max 0 5
04
Ω
with ± 24 V @ ± 2000 A _max 5 29
13 28 Ω
@ ± 3000 A _max 5 11 @ ± 2800 A 13 13
Ω
I_SN Secondary nominal current rms
400
mA
K_N Conversion ratio
1 : 5000
V_C Supply voltage (± 5 %)
± 15 .. 24
V
I_C
Current consumption (± 1)
33 (@ ± 24 V) + I_S mA
Accuracy - Dynamic performance data
X
ε
L
Accuracy @ I_PN, T_A = 25°C
Linearity error

± 0.3
< 0.1
Typ Max
I_O
Offset current @ I_P = 0, T_A = 25°C
I_OM Magnetic offset current @ I_P = 0 and specified R_M

after an overload of 3 x I_PN
I_OT
Temperature variation of I_O
- 25°C .. + 85°C ± 0.2

- 40°C .. - 25°C
± 0.5
± 0.2
± 0.5
± 1.5
t_r
Response time ¹⁾ to 90 % of I_PN step
di/dt di/dt accurately followed
< 1
> 50
BW Frequency bandwidth (-1 dB)
DC .. 100
%
%
mA
mA
mA
mA
µs
A/µs
kHz
General data
T_A Ambient operating temperature
T_S Ambient storage temperature
R_S Secondary coil resistance
@ T_A = 70°C
@ T_A = 85°C
m Mass
Standards
- 40 .. + 85
°C
- 50 .. + 90
°C
25
Ω
26
Ω
1.5
kg
EN 50178: 1997
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.
Note: ¹⁾ With a di/dt of 100 A/µs.
05July2011/version 11
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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