IPN = 2..200A
AC Current transducer AKR-C420L
Transducer for the electronic measurement AC waveforms current,
with galvanic isolation between the primary (High power) and the
secondary circuits (Electronic circuit). Jumper selectable ranges and
True RMS 4-20mA current output.
Electrical data
Features
Primary Nominal CurrentAnalogue Output Signal1)
Type
RoHS
IPN (A.t.RMS)
IOUT (mA)
Date Code
· VFD and SCR waveforms current
measurement
2,5
4-20
4-20
4-20
AKR 5 C420L JULY 2006
AKR 50 C420L planned
· True RMS responding
· 4-20 mA Current output
· Loop powered transducers
· Panel mounting
10,20,50
100,150,200
AKR 200 C420L JULY 2006
Vc
Supply voltage (Loop powered)
24
V DC
· Accurate
RL
Vb
Vd
f
Load resistance
see power supply diagram
150
· Jumper selectable ranges
Rated voltage (CAT III, PD2)
VAC
kV AC
Hz
RMS Isolation voltage test, 50 Hz, 1mn
Frequency bandwith
3
Advantages
20-100
· Large aperture
Accuracy - Dynamic performance data
· High isolation between primary and
secondary circuits
· Easy to mount
X
tr
Accuracy@ IPN, TA=25°C
± 1
%
Response time @ 90% of IPN
< 600
mS
Applications
General data
· VFD Controlled Loads:
VFD output indicates how the motor
and attached load are operating.
TA
TS
m
Ambient operating temperature (0-95% RH)
Ambient storage temperature
-20 ..+ 50
-20 ..+ 85
°C
°C
g
· SCR Controlled Loads:
Acurate measurement of phase
angle fired or burst fired (time
proportioned) SCRs.
Mass
Safety
EMC
90
IEC 61010-1
EN 61326
· Switching Power Supplies and
Electronic Ballasts:
Note: 1) For 4-20mA output model, no saturation output up to 23 mA.
True RMS sensing is the most
accurate way to measure power
supply or ballast input power.
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
“True RMS,” 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 “noisy” power environments.
Options on request
· DIN mounting
060816/6
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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LEM
www.lem.com