LAH50-P Datasheet, PDF (1/2 Pages) LEM – Current Transducer LAH 50-P

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
I_PN
Primary nominal r.m.s. current
I
Primary current, measuring range ¹⁾
P
R_M Measuring resistance @
50
A
0 .. 110
A
T_A = 70°C T_A = 85°C
RR RR
M min M max M min M max
with ± 12 V
with ± 15 V
@ I_PN [± A _DC ]
@ I_PN [A _RMS ] ²⁾
@ I_PN [± A _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 _N Conversion ratio
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_w Impulse withstand voltage 1.2/50 µs
> 12
kV
Accuracy - Dynamic performance data
X
ε
Accuracy ³⁾ @ I_PN, T_A = 25°C
Linearity
L
± 0.25
%
< 0.15
%
Typ Max
I_O
Offset current @ T_A = 25°C
± 0.15 mA
I
Residual current @ I = 0, after an overload of 5 x I ± 0.10 ± 0.15 mA
OM
P
PN
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)
General data
< 200
< 500
> 200
DC .. 200
ns
ns
A/µs
kHz
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 = 85°C 142
A
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 IO & IOM}
4) _{With a di/dt of 100 A/µs}
5) _{A list of corresponding tests is available.}
010822/5
LEM Components
www.lem.com