LA50-S Datasheet, PDF (1/2 Pages) LEM – Current Transducer LA 50-S/SP1

Current Transducer LA 50-S/SP1
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_P
Primary current, measuring range
R_M Measuring resistance
with ± 15 V
@ ± 50 A _max
@ ± 100 A _max
I_SN
Secondary nominal r.m.s. current
K _N Conversion ratio
V_C
Supply voltage (± 5 %)
I_C
Current consumption
V_d
R.m.s. voltage for AC isolation test, 50 Hz, 1 min
Accuracy - Dynamic performance data
εX G
L
Overall accuracy @ I_PN, T_A = 25°C
Linearity
I_O
I_OT
t_r
di/dt
f
Offset current @ I_P = 0, T_A = 25°C
Thermal drift of I_O
Response time ¹⁾ @ 90 % of I_PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
- 10°C .. + 70°C
General data
T_A
Ambient operating temperature
T_S
Ambient storage temperature
R _S Secondary coil resistance @ T_A = 70°C
m
Mass
Standards ²⁾
50
A
0 .. ± 100
A
R R _{M min}
M max
0
330 Ω
0
100 Ω
25
mA
1 : 2000
± 15
V
10 + I_S
mA
3
kV
± 0.5
%
< 0.1
%
Typ Max
± 0.1 mA
± 0.2 ± 0.4 mA
<1
> 50
DC .. 150
µs
A/µs
kHz
- 10 .. + 70
°C
- 25 .. + 85
°C
130
Ω
45
g
EN 50178
Features
• Closed loop (compensated) current
transducer using the Hall effect
• Insulated plastic case recognized
according to UL 94-V0.
Special features
• I_P = 0 .. ± 100 A
• K _N = 1 : 2000
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⁾ With a di/dt of 50 A/µs
2) _{A list of corresponding tests is available.}
991014/5
LEM Components
www.lem.com