060816/7
LEM www.lem.com
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. Page 1/2
IPN = 2 .. 200A
AC Current transducer AK-B420L
A Split Core transducer for the electronic measurement AC sinusoidal
waveforms current, with galvanic isolation between the primary (High
power) and the secondary circuits (Electronic circuit). Jumper selectable
ranges and 4-20mA current output.
Electrical data
Primary Nominal Current Analogue Output Signal1) Type RoHS
IPN (A.t.RMS) IOUT (mA) Date Code
2,5 4-20 AK 5 B420L JULY 2006
10,20,50 4-20 AK 50 B420L MAY 2006
100,150,200 4-20 AK 200 B420L planned
Vc Supply voltage (Loop powered) 24 V DC
RLLoad resistance see power supply diagram
VbRated voltage (CAT III, PD2) 150 VAC
VdRMS Isolation voltage test, 50 Hz, 1mn 3 kV AC
fFrequency bandwith 20-100 Hz
Accuracy - Dynamic performance data
XAccuracy @ IPN, TA=25°C ± 1%
trResponse time @ 90% of IPN < 300 mS
General data
TAAmbient operating temperature (0-95% RH) -20..+50 °C
TSAmbient storage temperature -20..+85 °C
mMass 120 g
Safety IEC 61010-1
EMC EN 61326
Note : 1) For 4-20mA output model, no saturation output up to 25mA.
Features
• AC sinusoïdal measurement
• Average responding
• Split core box
• Current output
• Loop powered transducers
• Panel mounting
• Jumper selectable ranges
Advantages
• Large aperture
• High isolation between primary and
secondary circuits
• Easy to mount
Applications
• Automation systems
Analog current reading for remote
monitoring (e.g. motor).
• Data loggers
Self-powered transducer does not
drain data logger batteries.
• Panel meters
Simple connection displays power
consumption.
Options on request
• DIN mounting
LEM www.lem.com
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LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice. 060816/7
Dimensions AK-B420L (unit : mm, 1mm = 0.0394 inch)
Mechanical characteristics
• General tolerance ± 1 mm
• Primary aperture 21.7 mm sq.
• Panel mounting 2 holes ∅ 4.5mm
Distance between holes 77.3 mm
Connections
• 2 x UNC8 Cylindric Head
Power Supply diagram
Remark
• Temperature of the primary conductor should not
exceed 60°C.
25
20
10
15
5
