LA03-PB_05 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

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
LA 03-PB
LA 05-PB
LA 10-PB
LA 15-PB
LA 20-PB
V
C
I_C
R
IS
V_OUT
R_L
Supply voltage (± 5 %)
± 15
V
Current consumption
Isolation resistance @ 500 VDC
app. 20mA + I_PN/1200mA
> 500
MΩ
Output voltage @ ± I_PN, R_L = 10 kΩ, T_A = 25°C ± 4
V
Load resistance
> 10
kΩ
Accuracy-Dynamic performance data
X
ε_L
V
OE
V_OH
V_OT
ε TC _G
t_r
f
Accuracy @ I , T = 25°C (without offset)
PN A
Linearity error (0 .. ± I_PN)
Electrical offset voltage, T = 25°C
A
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)
<± 1.5
<± 1
<± 30
<± 15
<± 1
<± 2
Thermal drift of the gain (% of reading) (-10..+80°C) <± 0.04
(-20..-10°C) <± 0.08
Response time @ 90% of I_P
Frequency bandwidth (- 1dB)²⁾
<3
DC .. 150
% of I
PN
% of I_PN
mV
mV
mV/K
mV/K
%/K
%/K
µs
kHz
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
m
Mass
- 20 .. + 80
°C
- 30 .. + 85
°C
< 12
g
Features
• Closed loop (compensation) current
transducer using the Hall effect
• Voltage output
• Printed circuit board mounting
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
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⁾ Calibration for 4V output is carried out at the primary norminal r.m.s.
current.
2) _{Derating is needed to avoid excessive core heating at high frequency.}
3) _{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.
LEM Industrial
051102/6
Page 1/3
www.lem.com