LAH50-P_07 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

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).
I_PN = 50 A
Electrical data
16010
I_PN
Primary nominal current rms
I_PM
Primary current, measuring range ¹⁾
R_M Measuring resistance @
with ± 12 V
with ± 15 V
@ I_PN [± A_DC ]
@ I [A ] 2)
PN RMS
@ I_PN [± A _DC ]
@ I [A ] ²⁾
PN
RMS
50
A
0 .. 110
A
T_A = 70°C T_A = 85°C
R_{M min} R_Mmax R_{M min} R_Mmax
0 221 0 214 Ω
0 115 0 108 Ω
0 335 0 327 Ω
0 195 0 188 Ω
I
Secondary nominal current rms
SN
K _N Conversion ratio
V
Supply voltage (± 5 %)
C
I_C
Current consumption
Accuracy - Dynamic performance data
X
Accuracy ³⁾ @ I T = 25°C
ε_L
PN, A
Linearity error
I
Offset current @ T = 25°C
O
A
I_OM
Magnetic offset current @ I_P = 0 and specified R_M,
after an overload of 5 x I
PN
I_OT
Temperature variation of I_O
0°C .. + 70°C
- 25°C .. + 85°C
t_{r a}
t_r
di/dt
BW
Reaction time @ 10 % of I_PN
Response time ⁴⁾ to 90 % of I_PN step
di/dt accurately followed
Frequency bandwidth (- 1 dB)
General data
T
Ambient operating temperature
A
T_S
Ambient storage temperature
R
Secondary coil resistance
S
m
Mass
Standards
@ T = 70°C
A
@ T_A = 85°C
25
mA
1 : 2000
± 12 .. 15
V
10 (@ ± 15V) + I mA
S
± 0.25
%
< 0.15
%
Typ Max
± 0.15 mA
± 0.10 ± 0.15 mA
± 0.10 ± 0.30 mA
± 0.10 ± 0.40 mA
< 200
< 500
> 200
DC .. 200
ns
ns
A/µ s
kHz
- 25 .. + 85
°C
- 40 .. + 90
°C
115
Ω
121
Ω
22
g
EN 50178: 1997
Notes: ¹⁾ For 10 s, with R_M ≤ 71 Ω (V_C = ± 15 V)
2) _{50 Hz Sinusoidal}
3) _{Without IO & IOM}
4) _{With a di/dt of 100 A/µs.}
Features
• Closed loop (compensated) current
transducer using the Hall effect
• Printed circuit board mounting
• 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.
Application domain
• Industrial.
071108/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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