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
I
SN
K
N
V
C
I
C
V
b
@ ± 200 A
max
@ ± 300 A
max
@ ± 200 A
max
@ ± 300 A
max
200
0 .. ± 300
600
T
A
= 70°C
T
A
= 85°C
R
M min
R
M max
R
M min
R
M max
0
0
5
5
68
33
95
50
0
0
5
5
66
30
93
49
A
A
A
Features
•
Closed loop (compensated) current
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0
•
Patent pending.
Ω
Ω
Ω
Ω
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.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s rated voltage
2)
, safe separation
basic isolation
100
mA
1 : 2000
± 12 .. 15
V
20
(@ ± 15 V) +
I
S
mA
1625
V
3250
V
Accuracy - Dynamic performance data
X
G
ε
L
Overall accuracy @
I
PN
,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Residual current
3)
@
I
P
= 0, after an overload of 3 x
I
PN
Thermal drift of
I
O
- 10°C .. + 85°C
Reaction time @ 10 % of
I
PN
Response time
4)
@ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 3 dB)
± 0.8
< 0.1
Max
± 0.15
± 0.50
± 0.15 ± 0.30
< 500
<1
> 100
DC .. 100
Typ
%
%
mA
mA
mA
ns
µs
A/µs
kHz
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.
I
O
I
OM
I
OT
t
ra
t
r
di/dt
f
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
- 10 .. + 85
- 40 .. + 90
35
37
110
EN 50178
°C
°C
Ω
Ω
g
T
A
= 70°C
T
A
= 85°C
Mass
Standards
5)
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
020711/6
LEM Components
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