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AKR-C420L Datasheet(PDF) 1 Page - LEM

Part No. AKR-C420L
Description  AC Current transducer
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Maker  LEM [LEM]
Homepage  http://www.lem.co.jp/HQ/en
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AKR-C420L Datasheet(HTML) 1 Page - LEM

   
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060816/6
LEM
www .lem.com
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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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
Primary Nominal CurrentAnalogue Output Signal1)
Type
RoHS
I
PN (A.t.RMS)
I
OUT (mA)
Date Code
2,5
4-20
AKR 5 C420L
JULY 2006
10,20,50
4-20
AKR 50 C420L
planned
100,150,200
4-20
AKR 200 C420L
JULY 2006
Vc
Supply voltage (Loop powered)
24
V DC
R
L
Load resistance
see power supply diagram
V
b
Rated voltage (CAT III, PD2)
150
VAC
V
d
RMS Isolation voltage test, 50 Hz, 1mn
3
kV AC
f
Frequency bandwith
20-100
Hz
Accuracy - Dynamic performance data
X
Accuracy @ I
PN, TA=25°C
± 1
%
t
r
Response time @ 90% of I
PN
< 600
mS
General data
T
A
Ambient operating temperature (0-95% RH)
-20 ..+ 50
°C
T
S
Ambient storage temperature
-20 ..+ 85
°C
m
Mass
90
g
Safety
IEC 61010-1
EMC
EN 61326
Note:
1) For 4-20mA 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
“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.
I
PN = 2..200A
Features
• VFD and SCR waveforms current
measurement
• True RMS responding
• 4-20 mA Current output
• Loop powered transducers
• Panel mounting
• Accurate
• Jumper selectable ranges
Advantages
• Large aperture
• High isolation between primary and
secondary circuits
• Easy to mount
Applications
• VFD Controlled Loads:
VFD output indicates how the motor
and attached load are operating.
• SCR Controlled Loads:
Acurate measurement of phase
angle fired or burst fired (time
proportioned) SCRs.
• 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
• DIN mounting


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