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Current Transducer LAH 50-P
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).
16010
Electrical data
I PN = 50 A
I PN
Primary nominal current rms
50
A
Features
I PM
R M
Primary current, measuring range
Measuring resistance @
1)
0 .. 110
T A = 70°C T A = 85°C
A
? Closed loop (compensated) current
with ± 12 V
with ± 15 V
@
@
@
@
I PN [± A DC ]
I PN [A RMS ] 2)
I PN [± A DC ]
I PN [A RMS ] 2)
R M min R M max R M min R M max
0 221 0 214
0 115 0 108
0 335 0 327
0 195 0 188
?
?
?
?
transducer using the Hall effect
? Printed circuit board mounting
? Insulated plastic case recognized
according to UL 94-V0.
Advantages
ε
I SN
K N
V C
I C
X
L
Secondary nominal current rms
Conversion ratio
Supply voltage (± 5 %)
Current consumption
Accuracy - Dynamic performance data
Accuracy 3) @ I PN, T A = 25°C
Linearity error
25
1 : 2000
± 12 .. 15
10 (@ ± 15V)
± 0.25
< 0.15
mA
V
+ I S mA
%
%
?
?
?
?
?
?
?
Excellent accuracy
Very good linearity
Low temperature drift
Optimized response time
Wide frequency bandwidth
No insertion losses
High immunity to external
I O
Offset current @ T A = 25°C
Typ
Max
± 0.15
mA
interference
? Current overload capability.
I OM
Magnetic offset current @ I P = 0 and specified R M ,
after an overload of 5 x I PN
± 0.10 ± 0.15
mA
Applications
I OT Temperature variation of I O
0°C .. + 70°C
- 25°C .. + 85°C
t r a Reaction time @ 10 % of I PN
t r Response time 4) to 90 % of I PN step
di/dt di/dt accurately followed
BW Frequency bandwidth (- 1 dB)
General data
± 0.10 ± 0.30
± 0.10 ± 0.40
< 200
< 500
> 200
DC .. 200
mA
mA
ns
ns
A/μs
kHz
? 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
T A
T S
R S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance
Mass
@ T A = 70°C
@ T A = 85°C
- 25 .. + 85
- 40 .. + 90
115
121
22
°C
°C
?
?
g
(SMPS)
? Power supplies for welding
applications.
Application domain
Standards
EN 50178: 1997
? Industrial.
Notes :
1)
2 )
3)
4)
For 10 s, with R M ≤ 71 ? ( V C = ± 15 V)
50 Hz Sinusoidal
Without I O & I O M
With a di/dt of 100 A/μs.
Page 1/3
071108/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
w w w .lem.com
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