Electrical data
Primary nominal Primary nominal Primary current Primary Conductor Type
current r.m.s. current measuring range Diameter
(A) IPN (A) IP (A) (mm)
3 3 ± 4.5 0.5 LA 03-PB
5 3 ± 7.5 0.5 LA 05-PB
10 5 ± 15 0.65 LA 10-PB
15 7.5 ± 22.5 0.8 LA 15-PB
20 10 ± 30 1.0 LA 20-PB
VCSupply voltage (± 5 %) ± 15 V
I CCurrent consumption app. 20mA+ IPN/1200 mA
VdR.m.s. voltage for AC isolation test, 50/60Hz,1mn 2.5 kV
R IS Isolation resistance @ 500 VDC > 500 MΩ
VOUT Output voltage @ ± IPN, RL = 10 kΩ, TA = 25°C ± 4 V
R LLoad resistance > 10 kΩ
Accuracy-Dynamic performance data
XAccuracy @ IPN, TA = 25°C (without offset) < ± 1.5 % of IPN
εεLLinearity (0 .. ± IPN)< ± 1 % of IPN
VOE Electrical offset voltage, TA = 25°C < ± 30 mV
VOH Hysteresis offset voltage @ IP = 0;
after an excursion of 1 x IPN < ± 15 mV
VOT Thermal drift of VOE max. ± 1 mV/K
TCεεGThermal drift(% of reading) < 0.04 %/K
t rResponse time @ 90% of IP< 3 µs
fFrequency bandwidth (- 1dB)2) DC .. 150 kHz
General data
TAAmbient operating temperature - 10 .. + 80 °C
TSAmbient storage temperature - 15 .. + 85 °C
mMass < 12 g
Notes : EN 50178 approval pending
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).
IPN =3 .. 20 A
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)
• Switched Mode Power Supplies
(SMPS)
• Power supplies for welding
applications
LEM Components www.lem.com
010809/3
Preliminary
2) Derating is needed to avoid excessive core heating at high frequency.
1) Calibration for 4V output is carried out at the primary norminal current.
LA 03 ... 20-PB
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
0.5
1234
6 +/-1
4.5 +/-1
Primary Conductor
4-0.5*0.25
Terminal Pin Identification
3 +Vcc
1 -Vcc
4 Output
2 0V
UNIT : mm
SCALE : 2/1
19 +/-1
20 +/-1
2
15 +/-1
Signal Pins
Primary Conductor
Part No. Diameter
LA 03-P
LA 05-P
LA 10-P
LA 15-P
LA 20-P
0.5 d
0.5 d
0.65 d
0.8 d
1.0 d
See the attached table
2.5 +/-1
Signal Pins
5 (+) 6 (-)
Direction of Current Flow
11 +/-1
3-p=2.54
6 +/-1
56
Front View Right View
Bottom View
PB
PB
PB
PB
PB
