Current Transducer LA 205-S
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
IPN = 200 A
16137
Electrical data
Features
● Closed loop (compensated)
current transducer using the Hall
effect
IPN
IPM
îP max
Primary nominal current rms
Primary current, measuring range
Measuring overload 1)
200
0 .. ± 300
600
A
A
A
● Isolated plastic case recognized
according to UL 94-V0
● Patent pending.
TA = 70°C TA = 85°C
RM min RM max RM min RM max
RM
Measuring resistance
with ± 12 V
@ ± 200 A max
@ ± 300 A max
@ ± 200 A max
@ ± 300 A max
0
0
5
5
68
33
95
0
0
5
5
66
30
93
49
Ω
Ω
Ω
Advantages
with ± 15 V
50
Ω
● Excellent accuracy
ISN
KN
VC
IC
Secondary nominal current rms
Conversion ratio
Supply voltage (± 5 %)
Current consumption
100
1 : 2000
± 12 .. 15
20 (@ ± 15 V) + IS mA
mA
● Very good linearity
● Low temperature drift
● Optimized response time
● Wide frequency bandwidth
● No insertion losses
● High immunity to external
interference
V
Accuracy - Dynamic performance data
X
Overall accuracy @ IPN , TA = 25°C
Linearity error
± 0.8
< 0.1
Typ
%
%
● Current overload capability.
εG
L
Applications
Max
IO
IOM
Offset current @ IP = 0, TA = 25°C
Magnetic offset current 2) @ IP = 0 and specified RM,
after an overload of 3 x IPN
Temperature variation of IO
Reaction time @ 10 % of IPN
Response time 3) @ 90 % of IPN step
di/dt accurately followed
± 0.15
mA
mA
mA
mA
ns
µs
A/µs
kHz
● 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)
± 0.50
± 0.15 ± 0.30
< 500
IOT
tra
tr
di/dt
BW
- 10°C .. + 85°C
< 1
> 100
Frequency bandwidth (- 3 dB)
DC .. 100
General data
● Power supplies for welding
applications.
TA
TS
RS
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance
- 10 .. + 85
- 40 .. + 90
35
°C
°C
Ω
Application domain
@ TA = 70°C
@ TA = 85°C
● Industrial.
37
Ω
m
Mass
110
g
Standards
EN 50178: 1997
Notes: 1) 3 mn/hour @ VC = ± 15 V, RM = 5 Ω
2) The result of the coercive force (Hc) of the magnetic circuit
3) With a di/dt of 100 A/µs.
Page 1/3
www.lem.com
110126/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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