Current Transducer LA 03..20-PB
For the electronic measurement of currents: DC, AC, pulsed, mixed,
with a galvanic isolation between the primary circuit (high power) and
the secondary circuit (electronic circuit).
I
PN
= 3 .. 20 A
Electrical data
Primary nominal
r.m.s. current
1)
I
PN
(A)
3
5
10
15
20
Primary current,
measuring range
I
P
(A)
± 4.5
± 7.5
± 15
± 22.5
± 30
Primary Current
Limitation
3)
(A)
3
3
5
7.5
10
Primary Conductor
Diameter
(mm)
0.5
0.5
0.65
0.8
1.0
Type
Features
•
Closed loop (compensation) current
transducer using the Hall effect
•
Voltage output
•
Printed circuit board mounting
LA
LA
LA
LA
LA
03-PB
05-PB
10-PB
15-PB
20-PB
V
C
I
C
R
IS
V
OUT
R
L
Supply voltage (± 5 %)
Current consumption
app.
Isolation resistance @ 500 VDC
Output voltage @ ±
I
PN
,
R
L
= 10 kΩ,
T
A
= 25°C
Load resistance
± 15
V
20mA +
I
PN
/1200mA
> 500
MΩ
±4
V
> 10
kΩ
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 capacity
Accuracy-Dynamic performance data
X
ε
L
V
OE
V
OH
V
OT
TC
ε
G
t
r
f
Accuracy @
I
PN
,
T
A
= 25°C (without offset)
Linearity error (0 .. ±
I
PN
)
Electrical offset voltage,
T
A
= 25°C
Hysteresis offset voltage @
I
P
= 0;
after an excursion of 1 x
I
PN
Thermal drift of
V
OE
(-10..+80°C)
(-20..-10°C)
Thermal drift of the gain (% of reading) (-10..+80°C)
(-20..-10°C)
Response time @ 90% of
I
P
Frequency bandwidth (- 1dB)
2)
<± 1.5
<± 1
<± 30
<± 15
<± 1
<± 2
<± 0.04
<± 0.08
<3
DC .. 150
% of
I
PN
% of
I
PN
mV
mV
mV/K
mV/K
%/K
%/K
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
General data
T
A
T
S
m
Ambient operating temperature
Ambient storage temperature
Mass
- 20 .. + 80
- 30 .. + 85
< 12
°C
°C
g
Notes :
1)
2)
3)
Calibration for 4V output is carried out at the primary norminal r.m.s.
current.
Derating is needed to avoid excessive core heating at high frequency.
Primary current is limited by primary wire size. Permanent primary
current should not exceed the specified value.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
051102/6
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LEM Industrial
www.lem.com
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