LA205-S Datasheet, PDF (1/2 Pages) LEM – Current Transducer LA 205-S

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 _N Conversion ratio
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 = 70°C T = 85°C
A
A
R R R R _{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
X
εG
L
I_O
I
OM
I_OT
t_ra
t
r
di/dt
f
Overall accuracy @ I , T = 25°C
PN A
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_{P max}
Response time ⁴⁾ @ 90 % of I
P max
di/dt accurately followed
< 500
<1
> 100
ns
µs
A/µs
Frequency bandwidth (- 3 dB)
DC .. 100
kHz
General data
T_A
Ambient operating temperature
T_S
Ambient storage temperature
R _S Secondary coil resistance @
m
Mass
- 10 .. + 85
°C
- 40 .. + 90
°C
T_A = 70°C 35
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. With 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.
980716/5
LEM Components
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