LA205-S_02 Datasheet, PDF (1/2 Pages) LEM – Current Transducer

Current Transducer LA 205-S
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 = 200 A
Electrical data
I_PN
I_P
Î_{P max}
R_M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring overload ¹⁾
Measuring resistance @
with ± 12 V
with ± 15 V
@ ± 200 A
max
@ ± 300 A _max
@ ± 200 A
max
@ ± 300 A _max
I_SN
Secondary nominal r.m.s. current
K
Conversion ratio
N
V_C
Supply voltage (± 5 %)
I_C
Current consumption
V_b
R.m.s rated voltage ²⁾, safe separation
basic isolation
200
A
0 .. ± 300
A
600
A
T_A = 70°C T_A = 85°C
RR RR
M min M max M min M max
0 68 0 66 Ω
0 33 0 30 Ω
5 95 5 93 Ω
5 50 5 49 Ω
100
mA
1 : 2000
± 12 .. 15
V
20 (@ ± 15 V) + I_S mA
1625
V
3250
V
Accuracy - Dynamic performance data
εX G
L
I_O
I
OM
I_OT
t_ra
t
r
di/dt
f
Overall accuracy @ I_PN , T_A = 25°C
Linearity
± 0.8
%
< 0.1
%
Typ Max
Offset current @ I_P = 0, T_A = 25°C
± 0.15 mA
Residual current ³⁾ @ I = 0, after an overload of 3 x I
P
PN
± 0.50 mA
Thermal drift of I_O
- 10°C .. + 85°C ± 0.15 ± 0.30 mA
Reaction time @ 10 % of I_PN
Response time ⁴⁾ @ 90 % of I
PN
di/dt accurately followed
< 500
<1
> 100
ns
µs
A/µs
Frequency bandwidth (- 3 dB)
DC .. 100
kHz
General data
T
Ambient operating temperature
A
T_S
Ambient storage temperature
R
Secondary coil resistance @
S
m
Mass
- 10 .. + 85
°C
- 40 .. + 90
°C
T = 70°C 35
A
Ω
T_A = 85°C 37
Ω
110
g
Standards ⁵⁾
EN 50178
Notes : ¹⁾ 3 mn/hour @ V_C = ± 15 V, R _M = 5 Ω
2) _{Pollution class nr 2. W ith a non insulated primary bar which fills the}
through-hole
3) _{The result of the coercive field of the magnetic circuit}
4) _{With a di/dt of 100 A/µs}
5) _{A list of corresponding tests is available}
Features
• Closed loop (compensated) current
transducer using the Hall effect
• Insulated plastic case recognized
according to UL 94-V0
• Patent pending.
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.
020711/6
LEM Components
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