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AKR-C420L_16 Datasheet, PDF (1/3 Pages) LEM – AC Current Transducer | |||
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AC Current Transducer AKR-C420L
Transducer for the electronic measurement AC waweforms current,
with galvanic separation between the primary circuit and the
secondary circuit. Jumper selectable ranges and True RMS 4-20 mA
current output.
IPN = 2 ⦠200 A
Electrical data
Primary nominal current
IPN (At rms)
Analogue output voltage 1)
Iout (mA)
Types
2, 5
10, 20, 50
100, 150, 200
4-20
4-20
4-20
AKR 5 C420L
AKR 50 C420L
AKR 200 C420L
UC Supply voltage (Loop powered)
RL Load resistance
Accuracy - Dynamic performance data
X Accuracy @ IPN, TA = 25 °C
tr
Step response time to 90 % of IPN
BW Frequency bandwidth
General data
TA Ambient operating temperature (0-95 % RH)
TS Ambient storage temperature
m Mass
Sandards
24
V DC
see power supply diagram
±1
%
< 600
ms
10-400
Hz
â20 ⦠+50
°C
â20 ⦠+85
°C
90
g
Safety IEC 61010-1: 2001
EMC EN 61326-1: 2005
Note: 1) For 4-20 mA output model, no saturation output up to 23 mA.
Selecting the transducer
VFD (Variable Frequency Drive) and SCR (Semi Conductor Rectifier) output
waveforms are rough approximations of a sine wave. There are numerous spikes
and dips in each cycle. AKR transducers use a mathematical algorithm called âTrue
RMSâ, which integrates the actual waveform over time. True RMS is the only way to
accurately measure distorted AC waveforms. Select AKR transducers for nonlinear
loads or in ânoisyâ power environments.
Features
ââ VFD and SCR waveforms current
measurement
ââ True RMS responding
ââ 4-20 mA current output
ââ Loop powered transducers
ââ Panel mounting
ââ Accurate
ââ Jumper selectable ranges.
Advantages
ââ Large aperture
ââ High insulation between primary
and secondary circuits
ââ Easy to mount.
Applications
ââ VFD Controlled Loads
VFD output indicates how the
motor and attached load are
operating.
ââ SCR Controlled Loads
Accurate measurement of phase
angle fired or burst fired (time
proportioned) SCRs.
ââ Switching Power Supplies and
Electronic Ballasts
True RMS sensing is the most
accurate way to measure power
supply or ballast input power.
Options on request
ââ DIN mounting.
Application domain
ââ Renewable Energies and
Power Supplies.
F2.11.08.000.0; F2.11.25.000.0; F2.11.44.000.0
14March2016/version 8
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice
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www.lem.com
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