LAH50-P_06 Datasheet, PDF (1/2 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
Primary nominal r.m.s. current
PN
I_P
Primary current, measuring range ¹⁾
R_M Measuring resistance @
50
A
0 .. 110
A
T_A = 70°C T_A = 85°C
R_{M min} R_Mmax R_{M min} R_Mmax
with ± 12 V
with ± 15 V
@ I [± A ]
PN
DC
@ I_PN [A _RMS ] ²⁾
@ I [± A ]
PN
DC
@ I_PN [A _RMS ] ²⁾
0 221 0 214 Ω
0 115 0 108 Ω
0 335 0 327 Ω
0 195 0 188 Ω
I_SN
Secondary nominal r.m.s. current
25
mA
K
Conversion ratio
N
1 : 2000
V_C
Supply voltage (± 5 %)
± 12 .. 15
V
I_C
Current consumption
10 (@ ± 15V) + I_S mA
V_d
R.m.s. voltage for AC isolation test, 50/60 Hz, 1 mn 5
kV
V_e
R.m.s. voltage for partial discharge extinction @ 10 pC > 2
kV
V
Impulse withstand voltage 1.2/50 µs
w
> 12
kV
Accuracy - Dynamic performance data
X
Accuracy ³⁾ @ I T = 25°C
ε_L
Linearity
PN, A
± 0.25
%
< 0.15
%
Typ Max
I
Offset current @ T = 25°C
O
A
± 0.15 mA
I_OM
Residual current @ I_P = 0, after an overload of 5 x I_PN ± 0.10 ± 0.15 mA
I_OT
Thermal drift of I_O
0°C .. + 70°C ± 0.10 ± 0.30 mA
- 25°C .. + 85°C ± 0.10 ± 0.40 mA
t_{r a}
t_r
di/dt
f
Reaction time @ 10 % of I_PN
Response time ⁴⁾ @ 90 % of I_PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
< 200
< 500
> 200
DC .. 200
ns
ns
A/µ s
kHz
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
R _S Secondary coil resistance
Insulating material group
m
Mass
Standards ⁵⁾
- 25 .. + 85
°C
- 40 .. + 90
°C
@ T_A = 70°C 135
Ω
@ T_A = 85°C 142
Ω
I
22
g
EN 50178
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.
Notes : ¹⁾ For 10 s, with R_M ≤ 71 Ω (V_C = ± 15 V)
2) _{50 Hz Sinusoidal}
3) _{Without I & I}
O OM
4) _{With a di/dt of 100 A/µs}
5) _{A list of corresponding tests is available.}
LEM
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
060124/7
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