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Current Transducer LA 55-TP/SP27
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic isolation between the primary circuit (high power) and
the secondary circuit (electronic circuit).
16086
Electrical data
I PN = 50 A
Features
ε
I PN Primary nominal current rms
I PM Primary current, measuring range
R M Measuring resistance
with ± 12 V @ ± 50 A max
@ ± 100 A max
with ± 15 V @ ± 50 A max
@ ± 100 A max
I SN Secondary nominal current rms
K N Conversion ratio
V C Supply voltage (± 5 %)
I C Current consumption
Accuracy - Dynamic performance data
X Accuracy @ I PN , T A = 25°C @ ± 15 V (± 5 %)
@ ± 12 .. 15 V (± 5 %)
L Linearity error
I O Offset current @ I P = 0, T A = 25°C
I OM Magnetic offset current 1) @ 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
- 40°C .. - 25°C
t ra Reaction time to 10 % of I PN step
t r Response time 2) to 90 % of I PN step
di/dt di/dt accurately followed
BW Frequency bandwidth (- 1 dB)
50 A
0 .. ± 100 A
R M min R M max
0 210 ?
0 30 ?
30 320 ?
30 90 ?
25 mA
1 : 2000
± 12 .. 15 V
10 (@ ± 15 V)+ I S mA
± 0.65 %
± 0.90 %
< 0.15 %
Typ Max
± 0.1 mA
± 0.2 mA
± 0.1 ± 0.3 mA
± 0.2 ± 0.5 mA
< 500 ns
< 1 μs
> 200 A/μs
DC .. 200 kHz
● Closed loop (compensated)
current transducer using the Hall
effect
● Mounted on printed circuit board
● Insulated plastic case recognized
according to UL 94-V0.
Special features
● I PM = 0 .. ± 100 A
● K N = 1 : 2000
● V d = 3.6 kV
● T A = - 40°C .. + 85°C
● Potted.
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
● Single or three phases inverter
General data
●
●
Propulsion and braking chopper
Propulsion converter
T A
T S
R S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @ T A = 85°C
Mass
Standards
- 40 .. + 85
- 50 .. + 90
140
35
EN 50155: 1995
°C
°C
?
g
● Auxiliart converter
● Battery charger.
Application domain
● Traction.
Notes : 1) Result of the coercive field of the magnetic circuit
2)
With a di/dt of 100 A/μs.
Page 1/3
090616/4
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
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