Current Transducer LA 100-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
=
100 A
0629
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance
with ± 15 V
I
SN
K
N
V
C
I
C
V
d
@ ± 100 A
max
@ ± 200 A
max
100
0 .. ± 200
R
M min
R
M max
0
0
50
1 : 2000
± 15
22 +
I
S
3
180
50
A
A
Ω
Ω
mA
V
mA
kV
Features
•
Closed loop (compensated) current
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s. voltage for AC isolation test, 50 Hz, 1 min
Special features
•
I
P
= 0 .. ± 200 A
•
K
N
= 1 : 2000
Accuracy - Dynamic performance data
X
G
Advantages
± 0.5
< 0.1
Typ
Max
± 0.1
± 0.4
%
%
mA
mA
µs
A/µs
kHz
ε
L
Overall accuracy @
I
PN,
T
A
= 25°C
Linearity error
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
- 10 °C .. + 70°C
Response time
1)
@ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
I
O
I
OT
t
r
di/dt
f
± 0.2
<1
> 50
DC .. 150
•
•
•
•
•
•
•
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.
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
T
A
= 70°C
Mass
Standards
2)
- 10 .. + 70
- 25 .. + 85
85
65
EN 50178
°C
°C
Ω
g
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)
2)
With a di/dt of 50 A/µs
A list of corresponding tests is available.
060901/6
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
page 1/2
LEM
www.lem.com
Dimensions LA 100-S/SP1
Front view
(in mm. 1 mm = 0.0394 inch)
Left view
Secondary terminals
Terminal
Terminal
Terminal
Terminal
+
-
M
0
:
:
:
:
supply voltage + 15 V
supply voltage - 15 V
measure
NC
Connection
Top view
Mechanical characteristics
•
•
•
•
General tolerance
Fastening
Primary through-hole
Connection of secondary
± 0.3 mm
2 holes
∅
3.2 mm
16 x 10 mm
Molex 5045-04/AG
Remarks
•
I
S
is positive when
I
P
flows in the direction of the arrow.
•
Temperature of the primary conductor should not exceed
100°C.
•
Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole.
•
In order to achieve the best magnetic coupling, the primary
windings have to be wound over the top edge of the device.
•
To measure nominal currents of less than 100 A, the opti-
mum accuracy is obtained by having several primary turns
(nominal current x number of turns < 100 At).
060901/6
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 2/2
LEM
www.lem.com
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